Pinouts for various connectors in Real Life(tm)

Contents:


7.3) Misc / Power

Power Connector Male      Speaker Connector        Turbo Indicator Connector
pin     assignment        pin     assignment       pin     assignment
1       +12V              1       -Speaker         1       +5V
2       +12V return       2       [key]            2       -High Speed
3       +5V return        3       GND              3       +5V
4       +5V               4       +Speaker +5V

AT LED Power and Key Lock     AT Backup Battery
pin     assignment	      pin     assignment
1       LED power	      1       Batt+
2       GND		      2       [key]
3       GND		      3       GND
4       Key Switch	      4       GND
5       GND

Motherboard Power Connectors
pin     P8 assignment          pin     P9 assignment
1       Power Good             1       GND
2       +5v  (or N.C.)         2       GND
3       +12v                   3       -5v
4       -12v                   4       +5v
5       GND                    5       +5v
6       GND                    6       +5v

7.4) MIDI

MIDI 5pin DIN
   MIDI In                 MIDI Out
pin     assignment      pin     assignment
1       N/C             1       N/C
2       N/C             2       GND
3       N/C             3       N/C
4       Current Src     4       Current Sink
5       Current Sink    5       Current Src

7.5) Floppy

Floppy Disk Controller IDC-34 Male
pin     assignment      pin     assignment
1       GND             2       Density Select
3       GND             4       (reserved)
5       GND             6       (reserved)
7       GND             8       Index
9       GND             10      Motor Enable A
11      GND             12      Drive Sel B
13      GND             14      Drive Sel A
15      GND             16      Motor Enable B
17      GND             18      Direction
19      GND             20      Step
21      GND             22      Write Data
23      GND             24      Floppy Write Enable
25      GND             26      Track 0
27      GND             28      Write Protect
29      GND             30      Read Data
31      GND             32      Head Select
33      GND             34      Disk Change

7.6) Game Port

Game Port DB15-Female
pin     assignment      pin     assignment
1       +5V DC          2       Button 4 (A_PB1)
3       Position 0(A_X) 4       GND
5       GND             6       Position 1 (A_Y)
7       Button 5(A_PB2) 8       +5V DC
9       +5V DC          10      Button 6 (B_PB1)
11      Position 2(B_X) 12      GND
13      Position 3(B_Y) 14      Button 7 (B_PB2)
15      +5V DC

7.7) Serial Port

Serial Port DB9-Male DB25-Male
9-pin   25-pin  assignment
1       8       DCD (Data Carrier Detect)
2       3       RX  (Receive Data)
3       2       TX  (Transmit Data)
4       20      DTR (Data Terminal Ready)
5       7       GND (Signal Ground)
6       6       DSR (Data Set Ready)
7       4       RTS (Request To Send)
8       5       CTS (Clear To Send)
9       22      RI  (Ring Indicator)

7.8) Parallel Port

Parallel Port DB25-Female
pin     assignment      pin     assignment
1       -Strobe         2       Data 0
3       Data 1          4       Data 2
5       Data 3          6       Data 4
7       Data 5          8       Data 6
9       Data 7          10      -Ack
11      Busy            12      Paper Empty
13      Select          14      -Auto Feed
15      -Error          16      -Init
17      -Slct in        18      GND
19      GND             20      GND
21      GND             22      GND
23      GND             24      GND
25      GND

Parallel Port Centronics-36
1       -Strobe         2       Data 0
3       Data 1          4       Data 2
5       Data 3          6       Data 4
7       Data 5          8       Data 6
9       Data 7          10      -Ack
11      Busy            12      Paper Empty
13      Select          14      -Auto Feed
15      {OSCXT}         16      Signal GND
17      Frame GND       18      +5v
19      GND             20      GND
21      GND             22      GND
23      GND             24      GND
25      GND             26      GND
27      GND             28      GND
29      GND             30      GND
31      -Prime          32      -Error
33      Signal GND      34      N/C
35      N/C             36      N/C

7.9) Keyboard

AT Keyboard Connector 5pin-DIN
pin     assignment
1       CLK/CTS (open-collector)
2       RxD/TxD/RTS (open-collector)
3       Reset
4       GND
5       +5V

XT Keyboard Connector 5pin-DIN
pin     assignment
1       CLK/CTS (open-collector)
2       Keyboard Data
3       N/C
4       GND
5       +5V

7.10) Hard Drive


7.10.1) ESDI

ESDI Hard Disk Interface IDC-34 Male, IDC-20 Male
               ESDI IDC-34
pin     assignment      pin     assignment
1       GND             2       Head Sel 3
3       GND             4       Head Sel 2
5       GND             6       Write Gate
7       GND             8       Config/Stat Data
9       GND             10      Transfer Ack
11      GND             12      Attn
13      GND             14      Head Sel 0
15      GND             16      Sect/Add MK Found
17      GND             18      Head Sel 1
19      GND             20      Index
21      GND             22      Ready
23      GND             24      Trans Req
25      GND             26      Drive Sel 1
27      GND             28      Drive Sel 2
29      GND             30      Drive Sel 3
31      GND             32      Read Gate
33      GND             34      Command Data

               ESDI IDC-20
pin     assignment      pin     assignment
1       Drive Selected  2       Sect/Add MK Found
3       Seek Complete   4       Addr Mark Enable
5       (reserved)      6       GND
7       Write Clk+      8       Write Clk-
9       Cartridge Chng  10      Read Ref Clk+
11      Read Ref Clk-   12      GND
13      NRZ Write Data+ 14      NRZ Write Data-
15      GND             16      GND
17      NRZ Read Data+  18      NRZ Read Data-
19      GND             20      GND

7.10.2) RLL/MFM

RLL/MFM  Hard Disk Interface IDC-34 Male, IDC-20 Male
             RLL/MFM IDC-34
pin     assignment      pin     assignment
1       GND             2       Head Sel 8
3       GND             4       Head Sel 4
5       GND             6       Write Gate
7       GND             8       Seek Complete
9       GND             10      Track 0
11      GND             12      Write Fault
13      GND             14      Head Sel 1
15      GND             16      (reserved)
17      GND             18      Head Sel 2
19      GND             20      Index
21      GND             22      Ready
23      GND             24      Step
25      GND             26      Drive Sel 1
27      GND             28      Drive Sel 2
29      GND             30      Drive Sel 3
31      GND             32      Drive Sel 4
33      GND             34      Direction In

             RLL/MFM IDC-20
pin     assignment      pin     assignment
1       Drive Selected  2       GND
3       (reserved)      4       GND
5       (reserved)      6       GND
7       (reserved)      8       GND
9       (reserved)      10      (reserved)
11      GND             12      GND
13      Write Data+     14      Write Data-
15      GND             16      GND
17      Read Data+      18      NRZ Read Data-
19      GND             20      GND

7.10.3) 2.5" IDE drive (44 pin connector)

[...]
The signals assigned for 44-pin applications are described in table 16. Although there are 50 pins in the plug, the mating receptacle need contain only 44 pins (the removal of pins E and F provides room for the wall of the receptacle).

The first four pins of the connector plug located on the device are not to be connected to the host, as they are reserved for manufacturer's use. Pins E, F and 20 are keys, and are removed.

+-------------------------------------------1-E-----+ 
| o o o o o o o o o o o o o o o o o o o o o o K C A | 
| o o o o o o o o o o o o K o o o o o o o o o K D B | 
+44----------------------20-----------------2-F-----+ 
+=================-=========-=============-=========-==================+ 
|    Signal       |Connector|             |Connector|     Signal       | 
|     name        | contact |  Conductor  | contact |      name        | 
|-----------------+---------+-------------+---------+------------------| 
|  Vendor specific|    A    |             |     B   |  Vendor specific | 
|  Vendor specific|    C    |             |     D   |  Vendor specific | 
|  (keypin)       |    E    |             |     F   |  (keypin)        | 
|  RESET-         |    1    |    1 |  2   |     2   |  Ground          | 
|  DD7            |    3    |    3 |  4   |     4   |  DD8             | 
|  DD6            |    5    |    5 |  6   |     6   |  DD9             | 
|  DD5            |    7    |    7 |  8   |     8   |  DD10            | 
|  DD4            |    9    |    9 | 10   |    10   |  DD11            | 
|  DD3            |   11    |   11 | 12   |    12   |  DD12            | 
|  DD2            |   13    |   13 | 14   |    14   |  DD13            | 
|  DD1            |   15    |   15 | 16   |    16   |  DD14            | 
|  DD0            |   17    |   17 | 18   |    18   |  DD15            | 
|  Ground         |   19    |   19 | 20   |    20   |  (keypin)        | 
|  DMARQ          |   21    |   21 | 22   |    22   |  Ground          | 
|  DIOW-          |   23    |   23 | 24   |    24   |  Ground          | 
|  DIOR-          |   25    |   25 | 26   |    26   |  Ground          | 
|  IORDY          |   27    |   27 | 28   |    28   |  PSYNC:CSEL      | 
|  DMACK-         |   29    |   29 | 30   |    30   |  Ground          | 
|  INTRQ          |   31    |   31 | 32   |    32   |  IOCS16-         | 
|  DA1            |   33    |   33 | 34   |    34   |  PDIAG-          | 
|  DAO            |   35    |   35 | 36   |    36   |  DA2             | 
|  CS0-           |   37    |   37 | 38   |    38   |  CS1-            | 
|  DASP-          |   39    |   39 | 40   |    40   |  Ground          | 
|* +5v (Logic)    |   41    |   41 | 42   |    42   |  +5V (Motor)   * | 
|* Ground (Return)|   43    |   43 | 44   |    44   |  TYPE- (0=ATA)*  | 
|----------------------------------------------------------------------| 
|     * Pins which are additional to those of the 40-pin cable.        | 
+======================================================================+ 

7.10.4) 3.5" IDE drive (40 pin connector)

Interface Signal Assignments and Descriptions

The physical interface consists of receivers and drivers communicating through a 40-conductor flat ribbon non-shielded cable using an asynchronous interface protocol. Reserved signals shall be left unconnected.

+===========================================+=============+====+=============+ 
| Description                               | Source      |Pin | Acronym     | 
+-------------------------------------------+-------------+----+-------------+ 
| Reset                                     | Host        |  1 | RESET-      | 
|                                           | n/a         |  2 | Ground      | 
| Data bus bit 7                            | Host/Device |  3 | DD7         | 
| Data bus bit 8                            | Host/Device |  4 | DD8         | 
| Data bus bit 6                            | Host/Device |  5 | DD6         | 
| Data bus bit 9                            | Host/Device |  6 | DD9         | 
| Data bus bit 5                            | Host/Device |  7 | DD5         | 
| Data bus bit 10                           | Host/Device |  8 | DD10        | 
| Data bus bit 4                            | Host/Device |  9 | DD4         | 
| Data bus bit 11                           | Host/Device | 10 | DD11        | 
| Data bus bit 3                            | Host/Device | 11 | DD3         | 
| Data bus bit 12                           | Host/Device | 12 | DD12        | 
| Data bus bit 2                            | Host/Device | 13 | DD2         | 
| Data bus bit 13                           | Host/Device | 14 | DD13        | 
| Data bus bit 1                            | Host/Device | 15 | DD1         | 
| Data bus bit 14                           | Host/Device | 16 | DD14        | 
| Data bus bit 0                            | Host/Device | 17 | DD0         | 
| Data bus bit 15                           | Host/Device | 18 | DD15        | 
| Ground                                    | n/a         | 19 | Ground      | 
| (keypin)                                  | n/a         | 20 | Reserved    | 
| DMA Request                               | Device      | 21 | DMARQ       | 
| Ground                                    | n/a         | 22 | Ground      | 
| I/O Write                                 | Host        | 23 | DIOW-       | 
| Ground                                    | n/a         | 24 | Ground      | 
| I/O Read                                  | Host        | 25 | DIOR-       | 
| Ground                                    | n/a         | 26 | Ground      | 
| I/O Ready                                 | Device      | 27 | IORDY       | 
| Spindle Sync or Cable Select              | (note 1)    | 28 | SPSYNC:CSEL | 
| DMA Acknowledge                           | Host        | 29 | DMACK-      | 
| Ground                                    | n/a         | 30 | Ground      | 
| Interrupt Request                         | Device      | 31 | INTRQ       | 
| 16 Bit I/O                                | Device      | 32 | IOCS16-     | 
| Device Address Bit 1                      | Host        | 33 | DA1         | 
| PASSED DIAGNOSTICS                        | (note 1)    | 34 | PDIAG-      | 
| Device Address Bit 0                      | Host        | 35 | DAO         | 
| Device Address Bit 2                      | Host        | 36 | DA2         | 
| Chip Select 0                             | Host        | 37 | CS0-        | 
| Chip Select 1                             | Host        | 38 | CS1-        | 
| Device Active or Slave (Device 1) Present | (note 1)    | 39 | DASP-       | 
| Ground                                    | n/a         | 40 | Ground      | 
+-------------------------------------------+-------------+----+-------------+ 
| Note 1: See signal descriptions for information on source of these signals | 
+============================================================================+ 

or

IDE Hard Disk Interface IDC-40 Male
pin     assignment      pin     assignment
1       -Reset          2       GND
3       Data 7          4       Data 8
5       Data 6          6       Data 9
7       Data 5          8       Data 10
9       Data 4          10      Data 11
11      Data 3          12      Data 12
13      Data 2          14      Data 13
15      Data 1          16      Data 14
17      Data 0          18      Data 15
19      GND             20      Key
21      (reserved)      22      GND
23      -IOW            24      GND
25      -IOR            26      GND
27      IO Chrdy        28      Ale
29      (reserved)      30      GND
31      IRQ14           32      -IOCS16
33      Addr 1          34      (reserved)
35      Addr 0          36      Addr 2
37      -CS0 (1F0-1F7)  38      -CS1 (3f6-3f7)
39      -Active         40      GND

7.11) ISA / EISA

     ISA Bus Connector              EISA Bus Connector
     -----------------              ------------------
Back Side       Component Side  Back Side       Component Side
pin assignment |pin assignment |pin assignment |pin assignment
B1  GND        |A1  CHCHK#     |F1  GND        |E1  CMD#
B2  Reset DRV  |A2  SD7        |F2  +5V        |E2  START#
B3  +5V        |A3  SD6        |F3  +5V        |E3  EXRDY
B4  IRQ9       |A4  SD5        |F4  ---        |E4  EX32#
B5  -5V        |A5  SD4        |F5  ---        |E5  GND
B6  DRQ2       |A6  SD3        |F6  ACCESS KEY |E6  ACCESS KEY
B7  -12V       |A7  SD2        |F7  ---        |E7  EX16#
B8  NOWS#      |A8  SD1        |F8  ---        |E8  SLBURST#
B9  +12V       |A9  SD0        |F9  +12V       |E9  MSBURST#
B10 GND        |A10 CHRDY      |F10 M/IO#      |E10 W/R#
B11 SMWTC#     |A11 AEN        |F11 LOCK#      |E11 GND
B12 SMRDC#     |A12 SA19       |F12 (reserved) |E12 (reserved)
B13 IOWC#      |A13 SA18       |F13 GND        |E13 (reserved)
B14 IORC#      |A14 SA17       |F14 (reserved) |E14 (reserved)
B15 DACK3#     |A15 SA16       |F15 BE3#       |E15 GND
B16 DRQ3       |A16 SA15       |F16 ACCESS KEY |E16 ACCESS KEY
B17 DACK1#     |A17 SA14       |F17 BE2#       |E17 BE1#
B18 DRQ1       |A18 SA13       |F18 BE0#       |E18 LA31#
B19 REFRESH#   |A19 SA12       |F19 GND        |E19 GND
B20 BCLK       |A20 SA11       |F20 +5V        |E20 LA30#
B21 IRQ7       |A21 SA10       |F21 LA29#      |E21 LA28#
B22 IRQ6       |A22 SA9        |F22 GND        |E22 LA27#
B23 IRQ5       |A23 SA8        |F23 LA26#      |E23 LA25#
B24 IRQ4       |A24 SA7        |F24 LA24#      |E24 GND
B25 IRQ3       |A25 SA6        |F25 ACCESS KEY |E25 ACCESS KEY
B26 DACK2#     |A26 SA5        |F26 LA16       |E26 LA15
B27 T/C        |A27 SA4        |F27 LA14       |E27 LA13
B28 BALE       |A28 SA3        |F28 +5V        |E28 LA12
B29 +5V        |A29 SA2        |F29 +5V        |E29 LA11
B30 OSC        |A30 SA1        |F30 GND        |E30 GND
B31 GND        |A31 SA0        |F31 LA10       |E31 LA9

                               |H1  LA8        |G1  LA7
D1  M16#       |C1  SBHE#      |H2  LA6        |G2  GND
D2  IO16#      |C2  LA23       |H3  LA5        |G3  LA4
D3  IRQ10      |C3  LA22       |H4  +5V        |G4  LA3
D4  IRQ11      |C4  LA21       |H5  LA2        |G5  GND
D5  IRQ12      |C5  LA20       |H6  ACCESS KEY |G6  ACCESS KEY
D6  IRQ15      |C6  LA19       |H7  D16        |G7  D17
D7  IRQ14      |C7  LA18       |H8  D18        |G8  D19
D8  DACK0#     |C8  LA17       |H9  GND        |G9  D20
D9  DRQ0       |C9  MRDC#      |H10 D21        |G10 D22
D10 DACK5#     |C10 MWTC#      |H11 D23        |G11 GND
D11 DRQ5       |C11 SD8        |H12 D24        |G12 D25
D12 DACK6#     |C12 SD9        |H13 GND        |G13 D26
D13 DRQ6       |C13 SD10       |H14 D27        |G14 D28
D14 DACK7#     |C14 SD11       |H15 ACCESS KEY |G15 ACCESS KEY
D15 DRQ7       |C15 SD12       |H16 D29        |G16 GND
D16 +5V        |C16 SD13       |H17 +5V        |G17 D30
D17 MASTER16#  |C17 SD14       |H18 +5V        |G18 D31
D18 GND        |C18 SD15       |H19 MAKx       |G19 MREQx

7.12) VESA Local Bus

                VESA Local Bus (VLB) Connector
                ------------------------------
Back Side       Component Side  Back Side       Component Side
pin assignment |pin assignment |pin assignment |pin assignment
B1  Dat00      |A1  Dat01      |B30 Adr17      |A30 Adr16
B2  Dat02      |A2  Dat03      |B31 Adr15      |A31 Adr14
B3  Dat04      |A3  GND        |B32 Vcc        |A32 Adr12
B4  Dat06      |A4  Dat05      |B33 Adr13      |A33 Adr10
B5  Dat08      |A5  Dat07      |B34 Adr11      |A34 Adr08
B6  GND        |A6  Dat09      |B35 Adr09      |A35 GND
B7  Dat10      |A7  Dat11      |B36 Adr07      |A36 Adr06
B8  Dat12      |A8  Dat13      |B37 Adr05      |A37 Adr04
B9  Vcc        |A9  Dat15      |B38 GND        |A38 WBACK#
B10 Dat14      |A10 GND        |B39 Adr03      |A39 BEO#
B11 Dat16      |A11 Dat17      |B40 Adr02      |A40 Vcc
B12 Dat18      |A12 Vcc        |B41 n/c        |A41 BE1#
B13 Dat20      |A13 Dat19      |B42 RESET#     |A42 BE2#
B14 GND        |A14 Dat21      |B43 DC#        |A43 GND
B15 Dat22      |A15 Dat23      |B44 M/ID#      |A44 BE3#
B16 Dat24      |A16 Dat25      |B45 W/R#       |A45 ADS#
B17 Dat26      |A17 GND        |               |
B18 Dat28      |A18 Dat27      |               |
B19 Dat30      |A19 Dat29      |B48 RDYRTN#    |A48 LRDY#
B20 Vcc        |A20 Dat31      |B49 GND        |A49 LDEV<x>#
B21 Adr31      |A21 Adr30      |B50 IRQ9       |A50 LREQ<x>#
B22 GND        |A22 Adr28      |B51 BRDY#      |A51 GND
B23 Adr29      |A23 Adr26      |B52 BLAST#     |A52 LGNT<x>#
B24 Adr27      |A24 GND        |B53 ID0        |A53 Vcc
B25 Adr25      |A25 Adr24      |B54 ID1        |A54 ID2
B26 Adr23      |A26 Adr22      |B55 GND        |A55 ID3
B27 Adr21      |A27 Vcc        |B56 LCLK       |A56 ID4
B28 Adr19      |A28 Adr20      |B57 Vcc        |A57 LKEN#
B29 GND        |A29 Adr18      |B58 LBS16#     |A58 LEAD5#

7.13) NULL Modem

Null Modem:
Connector 1 to  Connector 2
DTR             DSR/DCD
DSR/DCD         DTR
RTS             CTS
CTS             RTS
TXD             RXD
RXD             TXD
GND             GND

7.14) SIMMs

30 pin Fast Page Mode SIMM  256kx8 256kx9 1Mx8 1Mx9 4Mx8 4Mx9
pin     assignment|pin  assignment|pin  assignment|pin  assignment
1       Vcc       |9       Gnd    |17      A8     |25      DQ7
2       -CAS      |10      DQ2    |18      A9     |26      QP
3       DQ0       |11      A4     |19      A10    |27      -RAS
4       A0        |12      A5     |20      DQ5    |28      -CASP
5       A1        |13      DQ3    |21      -WE    |29      DP
6       DQ1       |14      A6     |22      Gnd    |30      Vcc
7       A2        |15      A7     |23      DQ6
8       A3        |16      DQ4    |24      N/C

Notes:
QP, CASP and DP are N/C on all x8 bit modules
a9 is a N/C on 256k modules
a10 is a N/C on 256k and 1M modules

72 pin Fast Page Mode SIMM  256k/512k/1M/2M/4M/8M x 32/36 bit
pin     assignment|pin  assignment|pin  assignment|pin  assignment
1       Gnd       |19      A10    |37      MP1    |55      DQ11
2       DQ0       |20      DQ4    |38      MP3    |56      DQ27
3       DQ16      |21      DQ20   |39      Gnd    |57      DQ12
4       DQ1       |22      DQ5    |40      -CAS0  |58      DQ28
5       DQ17      |23      DQ21   |41      -CAS2  |59      Vcc
6       DQ2       |24      DQ6    |42      -CAS3  |60      DQ29
7       DQ18      |25      DQ22   |43      -CAS1  |61      DQ13
8       DQ3       |26      DQ7    |44      -RAS0  |62      DQ30
9       DQ19      |27      DQ23   |45      -RAS1  |63      DQ14
10      Vcc       |28      A7     |46      N/C    |64      DQ31
11      N/C       |29      N/C    |47      -WE    |65      DQ15
12      A0        |30      Vcc    |48      N/C    |66      N/C
13      A1        |31      A8     |49      DQ8    |67      PD1
14      A2        |32      A9     |50      DQ24   |68      PD2
15      A3        |33      -RAS3  |51      DQ9    |69      PD3
16      A4        |34      -RAS2  |52      DQ25   |70      PD4
17      A5        |35      MP2    |53      DQ10   |71      N/C
18      A6        |36      MP0    |54      DQ26   |72      Gnd

Notes:
MP0,MP1,MP2,MP3 are N/C on all x32 bit modules
a9 is a N/C on 256k and 512k modules
a10 is a N/C on 256k, 512k, 1M and 4M modules
RAS1/RAS3 are N/C on 256k, 1M and 4M modules

Go to [Next] segment
Go to [Previous] segment

Go to [Table 'O Contents]


This article was written by filipg@paranoia.com [Feedback Form] [mailto]. The most recent version is available on the WWW server http://www.paranoia.com/~filipg/ [Copyright] [Disclaimer]