21 smbus connector, Figure 3-22: smbus connector location, Table 3-22: db-9 rs-422/485 pinouts – IEI Integration PCIE-Q870-i2 User Manual

Page 54: Table 3-23: smbus connector pinouts

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