
PCIE-Q870-i2 PICMG 1.3 CPU Card
Page 37
RS-422 Pinouts RS-485 Pinouts
Table 3-22: DB-9 RS-422/485 Pinouts
3.2.21 SMBus Connector
CN Label: CN2
CN Type:
4-pin wafer
CN Location:
See
Figure 3-22
CN Pinouts:
See
Table 3-23
The SMBus (System Management Bus) connector provides low-speed system
management communications.
Figure 3-22: SMBus Connector Location
Pin Description
1 GND
2 SMB_DATA
3 SMB_CLK
4 +5V
Table 3-23: SMBus Connector Pinouts
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