Kontron COMe Eval Carrier QorIQ - Manual (Page 19)

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Quick Start Guide
COME-QEC-1
5.2.9 SLOT 2 Connector J18
Slot 2 and its dedicated sideband signal connector J24 provide the possibility to verify the PCIe and sRIO capability of the
mounted COM Express® module. The main connector J18 provides the x4 interface connectivity whereas the sideband connec-
tor adds several sideband signals which are necessary for operation of the S0012 SRIO-Adapter Card or to assist in designing
special custom adapter cards.
Table 7: SLOT 2 Connector J18 Pinout
COMMENT
COM EXPRESS
CONNECTION
SIGNAL
PIN SIDE
SIGNAL
COM EXPRESS
CONNECTION
COMMENT
B A
12V power supply V_12V+ 1 1 PRSNT1# Grounded
12V power supply V_12V+ 2 2 V_12V+ 12V power supply
12V power supply V_12V+ 3 3 V_12V+ 12V power supply
Ground GND 4 4 GND Ground
SMBus clock from
COME module
(refer to Table 20) buffered signal
of SMB_CK I2C_SMB_SCL 5 5 NC Not connected
SMBus data from/
to COME module
(refer to Table 20) buffered signal
of SMB_DAT I2C_SMB_SDA 6 6 NC Not connected
Ground GND 7 7 NC Not connected
3.3V power supply V_3V3 8 8 NC Not connected
Not connected NC 9 9 V_3V3 3.3V power supply
3.3V power supply V_3V3 10 10 V_3V3 3.3V power supply
Wake0# signal to
COME module WAKE0# WAKE[0]# 11 11 RESET_PCIE_SLOT2# PCIe Reset from
Carrier glue logic,
low active
Not connected NC 12 12 GND Ground
Ground GND 13 13 CLK_PCIE_SLOT2+ buffered signal
of
SERDES_CK_RE
F+
100MHz PCIe refer-
ence clock, differ-
ential pair
SerDes transmit-
ter differential
pair, Lane 0 SERDES_TX4+ SLOT2_SD_TX[0]+ 14 14 CLK_PCIE_SLOT2- buffered signal
of
SERDES_CK_RE
F-
SERDES_TX4- SLOT2_SD_TX[0]- 15 15 GND Ground
Ground GND 16 16 SLOT2_SD_RX[0]+ SERDES_RX4+ SerDes receiver
differential pair,
Lane 0
EXCD0_CPPE# sig-
nal to COME mod-
ule, PRSNT# card
detect signal to
carrier glue logic,
8k2 PU on carrier
to V_3V3_STDBY EXCD1_CPPE# EXCD1_CPPE# 17 17 SLOT2_SD_RX[0]- SERDES_RX4-