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IDT SMBus Interfaces
Notes
PES48H12G2 User Manual
SMBus I/O
Expander
Type
Bit
10 (I/O-1.2)
O
11 (I/O-1.3)
O
12 (I/O-1.4)
O
13 (I/O-1.5)
O
14 (I/O-1.6)
O
15 (I/O-1.7)
O
1.
I/O-x.y corresponds to the notation used for PCA9555 port x I/O pin y.
I/O Expander 13
SMBus I/O
Expander
Type
Bit
1
0 (I/O-0.0)
O
1 (I/O-0.1)
O
2 (I/O-0.2)
O
3 (I/O-0.3)
O
4 (I/O-0.4)
O
5 (I/O-0.5)
O
6 (I/O-0.6)
O
7 (I/O-0.7)
O
8 (I/O-1.0)
O
9 (I/O-1.1)
O
10 (I/O-1.2)
O
11 (I/O-1.3)
O
12 (I/O-1.4)
O
13 (I/O-1.5)
O
14 (I/O-1.6)
O
15 (I/O-1.7)
O
Table 13.11 I/O Expander 13 - Link Activity Status
1.
I/O-x.y corresponds to the notation used for PCA9555 port x I/O pin y.
Slave SMBus Interface
The slave SMBus interface provides PES48H12G2 with a configuration, management and debug inter-
face. Using the slave SMBus interface, an external master can read or write any software visible register in
the device.
Signal
Unused
Unused
P12LINKUPN
Port 12 link up status output
P13LINKUPN
Port 13 link up status output
Unused
Unused
Table 13.10 I/O Expander 12 - Link Up Status
Signal
P0ACTIVEN
Port 0 Link active status output
P1ACTIVEN
Port 1 Link active status output
P2ACTIVEN
Port 2 Link active status output
P3ACTIVEN
Port 3 Link active status output
P4ACTIVEN
Port 4 Link active status output
P5ACTIVEN
Port 5 Link active status output
P6ACTIVEN
Port 6 Link active status output
P7ACTIVEN
Port 7 Link active status output
P8ACTIVEN
Port 8 Link active status output
P9ACTIVEN
Port 9 Link active status output
Unused
Unused
P12ACTIVEN
Port 12 Link active status output
P13ACTIVEN
Port 13 Link active status output
Unused
Unused
13 - 13
Description
Description
April 5, 2013
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