Manual

EEV-EX03
26 EEV-EX03 Quick Installation Guide
Signal PIN PIN Signal
TRDY# A61 A62 USB3-
IRDY#
A63 A64
STOP#
FRAME# A65 A66 USB2+
GND
A67 A68
GND
AD16 A69 A70 CBE#2
AD17
A71 A72
USB3+
AD19 A73 A74 AD18
AD20
A75 A76
USB0-
AD22 A77 A78 AD21
AD23
A79 A80
USB1-
AD24 A81 A82 CBE#3
+5V
A83 A84
+5V
AD25 A85 A86 AD26
AD28
A87 A88
USB0+
AD27 A89 A90 AD29
AD30
A91 A92
USB1+
PCIRST# A93 A94 AD31
INTR#C
A95 A96
INTR#D
INTR#A A97 A98 INTR#B
GND
A99 A100
GND
2.3.27 Signal Description – ETX Connector 1 (ETX1)
2.3.27.1 PCI Signals
Signal Signal Description
PCICLK [1:4]
PCI clock outputs for up to 4 external PCI slots or devices.
The baseboard designer should route these clocks for 1300pS total delay from the
ETX connector pin to the clock pin of the PCI device. See the ETX Design Guide
for typical route length calculations.
REQ [0:3]#
Bus Request signals for up to 4 external bus mastering PCI devices. When
asserted, a PCI device is requesting PCI bus ownership from the arbiter.
GNT [0:3]#
Grant signals to PCI Masters. When asserted by the arbiter, the PCI master has
been granted ownership of the PCI bus.
AD [0:31]
PCI Address and Data Bus Lines. These lines carry the address and data
information for PCI transactions.
CBE [0:3]#
PCI Bus Command and Byte Enables. Bus command and byte enables are
multiplexed in these lines for address and data phases, respectively.
PAR
Parity bit for the PCI bus. Generated as even parity across AD [31:0] and CBE
[3:0]#.
SERR#
System Error. Asserted for hardware error conditions such as parity errors
detected in DRAM.
PERR# Parity Error. For PCI operation per exception granted by PCI 2.1 Specification.