
Technical Reference
Table 28. PCI Bus Connector (J4B1)
| Pin | 
 | Signal | Pin | 
 | Signal | Pin | 
 | Signal | Pin | 
 | Signal | 
| A1 | 
 | Ground (TRST#)* | B1 | 
 | A32 | 
 | AD16 | B32 | 
 | AD17 | |
| A2 | 
 | +12 V | B2 | 
 | Ground (TCK)* | A33 | 
 | +3.3 V | B33 | 
 | C/BE2# | 
| A3 | 
 | +5 V (TMS)* | B3 | 
 | Ground | A34 | 
 | FRAME# | B34 | 
 | Ground | 
| A4 | 
 | +5 V (TDI)* | B4 | 
 | No connect (TDO)* | A35 | 
 | Ground | B35 | 
 | IRDY# | 
| A5 | 
 | +5 V | B5 | 
 | +5 V | A36 | 
 | TRDY# | B36 | 
 | +3.3 V | 
| A6 | 
 | INTA# | B6 | 
 | +5 V | A37 | 
 | Ground | B37 | 
 | DEVSEL# | 
| A7 | 
 | INTC# | B7 | 
 | INTB# | A38 | 
 | STOP# | B38 | 
 | Ground | 
| A8 | 
 | +5 V | B8 | 
 | INTD# | A39 | 
 | +3.3 V | B39 | 
 | LOCK# | 
| A9 | 
 | Reserved | B9 | 
 | No connect (PRSNT1#)* | A40 | 
 | Reserved | B40 | 
 | PERR# | 
| A10 | 
 | +5 V (I/O) | B10 | 
 | Reserved | A41 | 
 | Reserved | B41 | 
 | +3.3 V | 
| A11 | 
 | Reserved | B11 | 
 | No connect (PRSNT2#)* | A42 | 
 | Ground | B42 | 
 | SERR# | 
| A12 | 
 | Ground | B12 | 
 | Ground | A43 | 
 | PAR | B43 | 
 | +3.3 V | 
| A13 | 
 | Ground | B13 | 
 | Ground | A44 | 
 | AD15 | B44 | 
 | C/BE1# | 
| A14 | 
 | +3.3 V aux | B14 | 
 | Reserved | A45 | 
 | +3.3 V | B45 | 
 | AD14 | 
| A15 | 
 | RST# | B15 | 
 | Ground | A46 | 
 | AD13 | B46 | 
 | Ground | 
| A16 | 
 | +5 V (I/O) | B16 | 
 | CLK | A47 | 
 | AD11 | B47 | 
 | AD12 | 
| A17 | 
 | GNT# | B17 | 
 | Ground | A48 | 
 | Ground | B48 | 
 | AD10 | 
| A18 | 
 | Ground | B18 | 
 | REQ# | A49 | 
 | AD09 | B49 | 
 | Ground | 
| A19 | 
 | PME# | B19 | 
 | +5 V (I/O) | A50 | 
 | Key | B50 | 
 | Key | 
| A20 | 
 | AD30 | B20 | 
 | AD31 | A51 | 
 | Key | B51 | 
 | Key | 
| A21 | 
 | +3.3 V | B21 | 
 | AD29 | A52 | 
 | C/BE0# | B52 | 
 | AD08 | 
| A22 | 
 | AD28 | B22 | 
 | Ground | A53 | 
 | +3.3 V | B53 | 
 | AD07 | 
| A23 | 
 | AD26 | B23 | 
 | AD27 | A54 | 
 | AD06 | B54 | 
 | +3.3 V | 
| A24 | 
 | Ground | B24 | 
 | AD25 | A55 | 
 | AD04 | B55 | 
 | AD05 | 
| A25 | 
 | AD24 | B25 | 
 | +3.3 V | A56 | 
 | Ground | B56 | 
 | AD03 | 
| A26 | 
 | IDSEL | B26 | 
 | C/BE3# | A57 | 
 | AD02 | B57 | 
 | Ground | 
| A27 | 
 | +3.3 V | B27 | 
 | AD23 | A58 | 
 | AD00 | B58 | 
 | AD01 | 
| A28 | 
 | AD22 | B28 | 
 | Ground | A59 | 
 | +5 V (I/O) | B59 | 
 | +5 V (I/O) | 
| A29 | 
 | AD20 | B29 | 
 | AD21 | A60 | 
 | REQ64C# | B60 | 
 | ACK64C# | 
| A30 | 
 | Ground | B30 | 
 | AD19 | A61 | 
 | +5 V | B61 | 
 | +5 V | 
| A31 | 
 | AD18 | B31 | 
 | +3.3 V | A62 | 
 | +5 V | B62 | 
 | +5 V | 
| 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
 | 
*These signals (in parentheses) are optional in the PCI specification and are not currently implemented.
Table 29. ATAPI 
Pin
1
2
3
4
Signal Name
Left audio input from 
CD audio differential ground
CD audio differential ground
Right audio input from 
45