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4 ETX® connectors
Kontron User's Guide ETX CD 21
Pin 51–100:
[Power | PCI |USB | AUDIO]
Pin Si
g
na
l
Descri
p
tion T
yp
e Termination Commen
t
51 VCC Power +5V PWR - -
52 VCC Power +5V PWR - -
53 PAR PCI Bus Parit
y
IO-3,3 - -
54 SERR# PCI Bus S
y
stem Error IO-3,3 PU 8k2 3,3V -
55 GPERR# PCI Bus Grant Error IO-3,3 PU 8k2 3,3V -
56 nc - nc - Reserved
57 PME# PCI Power Mana
g
ement Even
t
IO-3,3 - int. PU 20k 3,3V
58 USB2# USB Data- , Port2 IO-3,3 - int. PD 15k in ICH7
59 LOCK# PCI Bus Lock IO-3,3 PU 8k2 3,3V -
60 DEVSEL# PCI Bus Device Selec
t
IO-3,3 PU 8k2 3,3V -
61 TRDY# PCI Bus Tar
g
et Read
y
IO-3,3 PU 8k2 3,3V -
62 USB3# USB Data- , Port3 IO-3,3 - int. PD 15k in ICH7
63 IRDY# PCI Bus Initiator Read
y
IO-3,3 PU 8k2 3,3V -
64 STOP# PCI Bus Sto
p
IO-3,3 PU 8k2 3,3V -
65 FRAME# PCI Bus C
y
cle Frame IO-3,3 PU 8k2 3,3V -
66 USB2 USB Data+ , Port2 IO-3,3 - int. PD 15k in ICH7
67 GND Ground PWR - -
68 GND Ground PWR - -
69 AD16 PCI Adress & Data Bus line IO-3,3 - -
70 CBE2# PCI Bus Command and B
y
te enables 2 IO-3,3 - -
71 AD17 PCI Adress & Data Bus line IO-3,3 - -
72 USB3 USB Data+ , Port3 IO-3,3 - int. PD 15k in ICH7
73 AD19 PCI Adress & Data Bus line IO-3,3 - -
74 AD18 PCI Adress & Data Bus line IO-3,3 - -
75 AD20 PCI Adress & Data Bus line IO-3,3 - -
76 USB0# USB Data- , Port0 IO-3,3 - int. PD 15k in ICH7
77 AD22 PCI Adress & Data Bus line IO-3,3 - -
78 AD21 PCI Adress & Data Bus line IO-3,3 - -
79 AD23 PCI Adress & Data Bus line IO-3,3 - -
80 USB1# USB Data- , Port1 IO-3,3 - int. PD 15k in ICH7
81 AD24 PCI Adress & Data Bus line IO-3,3 - -
82 CBE3# PCI Command and B
y
te enables 3 IO-3,3 - -
83 VCC Power +5V PWR - -
84 VCC Power +5V PWR - -
85 AD25 PCI Adress & Data Bus line IO-3,3 - -
86 AD26 PCI Adress & Data Bus line IO-3,3 - -
87 AD28 PCI Adress & Data Bus line IO-3,3 - -
88 USB0 USB Data+ , Port0 IO-3,3 - int. PD 15k in ICH7
89 AD27 PCI Adress & Data Bus line IO-3,3 - -
90 AD29 PCI Adress & Data Bus line IO-3,3 - -
91 AD30 PCI Adress & Data Bus line IO-3,3 - -
92 USB1 USB Data+ , Port1 IO-3,3 - int. PD 15k in ICH7
93 PCIRST# PCI Bus Rese
t
O-3,3 - -
94 AD31 PCI Adress & Data Bus line IO-3,3 - -
95 INTC# PCI BUS Interru
p
t Re
q
uest C I-3,3 PU 8k2 3,3V -
96 INTD# PCI BUS Interru
p
t Re
q
uest D I-3,3 PU 8k2 3,3V -
97 INTA# PCI BUS Interru
p
t Re
q
uest A I-3,3 PU 8k2 3,3V -
98 INTB# PCI BUS Interru
p
t Re
q
uest B I-3,3 PU 8k2 3,3V -
99 GND Ground PWR - -
100 GND Ground PWR - -
Note: The termination resistors in this table are already mounted on the ETX® board. Please refer to the design
guide for information about additional termination resistors.