Kontron COMe Eval Carrier QorIQ - Manual (Page 23)

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Quick Start Guide
COME-QEC-1
5.2.11 SLOT 4 Connector J20
Slot 4 and its dedicated sideband signal connector J26 provide the possibility to verify the SGMII and XAUI capability of the
mounted COM Express® module. The main connector J20 provides up to four GigEthernet SGMII interfaces or one XAUI interface
whereas the sideband connector adds several sideband signals which are necessary for operation of the S0011 XAUI-Adapter
Card or to assist in designing special custom adapter cards.
Table 9: SLOT 4 Connector J20 Pinout
COMMENT
COM EXPRESS
CONNECTION
SIGNAL
PIN SIDE
SIGNAL
COM EXPRESS
CONNECTION
COMMENT
B A
12V power supply V_12V+ 1 1 NC Not connected
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
Wake1# signal to
COME module WAKE1# WAKE[1]# 11 11 RESET_PCIE_SLOT4# PCIe Reset from
Carrier glue logic,
low active
Not connected NC 12 12 GND Ground
Ground GND 13 13 NC Not connected
SerDes transmit-
ter differential
pair, Lane 0 SERDES_TX14+ SLOT4_SD_TX[0]+ 14 14 NC Not connected
SERDES_TX14- SLOT4_SD_TX[0]- 15 15 GND Ground
Ground GND 16 16 SLOT4_SD_RX[0]+ SERDES_RX14+ SerDes receiver
differential pair,
Lane 0
Not connected NC 17 17 SLOT4_SD_RX[0]- SERDES_RX14-
Ground GND 18 18 GND Ground
SerDes transmit-
ter differential
pair, Lane 1 SERDES_TX15+ SLOT4_SD_TX[1]+ 19 19 NC Not connected
SERDES_TX15- SLOT4_SD_TX[1]- 20 20 GND Ground
Ground GND 21 21 SLOT4_SD_RX[1]+ SERDES_RX15+ SerDes receiver
differential pair,
Lane 1
Ground GND 22 22 SLOT4_SD_RX[1]- SERDES_RX15-