Express-BASE6 User’s ManualPage 20
6.8 I
2
C and SMB Bus
(for user access)
CN33: I
2
C Bus
Pin Signal
1 +5V
2 I2C_DAT
3 I2C_CK
4 GND
CN34: SMB Bus
Pin Signal
1 +5V
2 SMB_DAT
3 SMB_CK
4 GND
1
1
JP19: I
2
C BUFFER (data)
Jumper Status
1-2 ON
2-3 OFF <<<<
1
2
3
JP20: I
2
C BUFFER (clock)
Jumper Status
1-2 ON
2-3 OFF <<<<
1
2
3
JP21: SMBus BUFFER (data)
Jumper Status
1-2 ON
2-3 OFF <<<<
1
2
3
JP22: SMBus BUFFER (clock)
Jumper Status
1-2 ON
2-3 OFF <<<<
1
2
3
I2C/SMBus Buffers
These buffers settings are for isolation of the I2C and SMBus - test feature only.
ON: I2C/SMBus passes through LTC4300A-2 Buffer
OFF: Bypass Buffer
Note: <<<< indicates default setting
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