Intel SC450NX Product Guide - Page 150

PCI Table 49. PCI Connector Pinout Pin Signal A1 TRST_L A2 +12 V A3 TMS A4 TDI A5 +5 V A6 INTA_L A7 INTC_L A8 +5 V A9 Reserved A10 +5 V A11 Reserved A12 GND A13 GND A14 Reserved A15 RST_L A16 +5 V A17 GNT_L A18 GND A19 Reserved A20 AD30 A21 +3.3 V * A22 AD28 A23 AD26 A24 GND A25 AD24 A26 IDSEL A27 +3.3 V * A28 AD22 A29 AD20 A30 GND A31 AD18 Pin Signal B1 -12 V B2 TCK B3 GND B4 TD0 (NC) B5 +5 V B6 +5 V B7 INTB_L B8 INTD_L B9 PRSNT1_L B10 Reserved B11 PRSNT2_L B12 GND B13 GND B14 Reserved B15 GND B16 PCICLK B17 GND B18 REQ_L B19 +5 V B20 AD31 B21 AD29 B22 GND B23 AD27 B24 AD25 B25 +3.3 V * B26 C/BE3_L B27 AD23 B28 GND B29 AD21 B30 AD19 B31 +3.3 V * Pin Signal A32 AD16 A33 +3.3 V * A34 FRAME_L A35 GND A36 TRDY_L A37 GND A38 STOP_L A39 +3.3 V * A40 SDONE A41 SBO_L A42 GND A43 PAR A44 AD15 A45 +3.3 V * A46 AD13 A47 AD11 A48 GND A49 AD9 A50 KEY A51 KEY A52 C/BE0_L A53 +3.3 V * A54 AD6 A55 AD4 A56 GND A57 AD2 A58 AD0 A59 +5 V A60 REQ64_L A61 +5 V A62 +5 V Pin Signal B32 AD17 B33 C/BE2_L B34 GND B35 IRDY_L B36 +3.3 V * B37 DEVSEL_L B38 GND B39 LOCK_L B40 PERR_L B41 +3.3 V * B42 SERR_L B43 +3.3 V * B44 C/BE1_L B45 AD14 B46 GND B47 AD12 B48 AD10 B49 GND B50 KEY B51 KEY B52 AD8 B53 AD7 B54 +3.3 V * B55 AD5 B56 AD3 B57 GND B58 AD1 B59 +5 V B60 ACK64_L B61 +5 V B62 +5 V * The baseboard does not provide a PCI 3.3 V power connector. Only the 5 V PCI signaling environment is supported, and no power is available at the 3.3 V signal pins in expansion slots. 150