
14 • Backplane
Pin Assignment
¾ [1 – P1] System Slot
Pin Z A B C D E F
25
GND +5V REQ64#
ENUM#
+3.3V +5V GND
24
GND AD[1] +5V V(I/O)
AD[0] ACK64# GND
23
GND +3.3V AD[4] AD[3] +5V AD[2] GND
22
GND AD[7] GND +3.3V AD[6] AD[5] GND
21
GND +3.3V AD[9] AD[8] M66EN C/BE[0]# GND
20
GND AD[12] GND V(I/O)
AD[11] AD[10] GND
19
GND +3.3V AD[15] AD[14] GND AD[13] GND
18
GND SERR# GND +3.3V PAR C/BE[1]# GND
17
GND +3.3V IPMB_SCL
IPMB_SDA
GND PERR# GND
16
GND DEVSEL# GND V(I/O)
STOP# LOCK# GND
15
GND +3.3V FRAME# IRDY# BDSEL TRDY# GND
12-14 Key
11
GND AD[18] AD[17] AD[16] GND C/BE[2]# GND
10
GND AD[21] GND +3.3V AD[20] AD[19] GND
9
GND C/BE[3]# IDSEL AD[23] GND AD[22] GND
8
GND AD[26] GND V(I/O)
AD[25] AD[24] GND
7
GND AD[30] AD[29] AD[28] GND AD[27] GND
6
GND REQ# GND +3.3V CLK AD[31] GND
5
GND Reserved
Reserved
PCIRST# GND GNT# GND
4
GND IPMB_PWR HEALTHY# V(I/O)
INTP
INTS GND
3
GND INTA# INTB# INTC# +5V INTD# GND
2
GND TCK
+5V TMS
TDO
TDI
GND
1
GND +5V -12V TRST#
+12V +5V GND
Pin Z A B C D E F
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