Sm Bus - Congatec conga-CEVAL User Manual

Row A
Pin
BIOS_DIS0#
A34
A35 THRMTRIP#
USB6-
A36
USB6+
A37
USB_6_7_OC#
A38
USB4-
A39
USB4+
A40
A41 GND (FIXED)
USB2-
A42
USB2+
A43
USB_2_3_OC#
A44
USB0-
A45
USB0+
A46
A47 VCC_RTC
A48 EXCD0_PERST#
A49 EXCD0_CPPE#
A50 LPC_SERIRQ
A51 GND (FIXED)
A52 PCIE_TX5+
A53 PCIE_TX5‑
A54 GPI0
A55 PCIE_TX4+
4.1.1

SM Bus

On the COM Express™ module, the System Management Bus (SMB) is powered by the standby power rail in order to have control over the
system during the system states S0‑S5. The devices on the conga‑CEVAL (e.g. PCI Express clock buffer or PCI Express connectors) using the
SMB are normally powered by the 3.3V main power. To avoid current leakage between the main power of the carrier board and the standby
power of the module, a bus switch separates the SMB on the conga-CEVAL carrier board from the SMB of the module.
The SM Bus signals are available on the feature connector (X27) described in section 5.8.
Copyright © 2012 congatec AG
Row B Row A
Pin Pin
B34
I2C_DAT A89 PCIE0_CK_REF‑
B35
THRM# A90 GND (FIXED)
B36 USB7-
A91 SPI_POWER
B37 USB7+
A92 SPI_MISO
B38 USB_4_5_OC#
A93 GPO0
B39 USB5-
A94 SPI_CLK
B40 USB5+
A95 SPI_MOSI
B41
GND (FIXED) A96 GND
B42 USB3-
A97 TYPE10#
B43 USB3+
A98 RSVD
B44 USB_0_1_OC#
A99 RSVD
B45 USB1-
A100 GND (FIXED)
B46 USB1+
A101 RSVD
B47
EXCD1_PERST# A102 RSVD
B48
EXCD1_CPPE# A103 RSVD
B49
SYS_RESET# A104 VCC_12V
B50 CB_RESET#
A105 VCC_12V
B51
GND (FIXED) A106 VCC_12V
B52
PCIE_RX5+ A107 VCC_12V
B53
PCIE_RX5‑ A108 VCC_12V
B54
GPO1 A109 VCC_12V
B55
PCIE_RX4+ A110 GND (FIXED)
Row B
Pin
B89
VGA_RED
B90
GND (FIXED)
B91
VGA_GRN
B92 VGA_BLU
B93
VGA_HSYNC
B94
VGA_VSYNC
B95
VGA_I2C_CK
B96
VGA_I2C_DAT
B97
SPI_CS#
B98
RSVD
B99
RSVD
B100 GND (FIXED)
B101 RSVD
B102 RSVD
B103 RSVD
B104 VCC_12V
B105 VCC_12V
B106 VCC_12V
B107 VCC_12V
B108 VCC_12V
B109 VCC_12V
B110 GND (FIXED)
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