Table of Contents
Advertisement
IDT SMBus Interfaces
Notes
PES4T4 User Manual
I/O Expander 2
SMBus I/O
Expander
Type
Bit
1
0 (I/O-0.0)
I
1 (I/O-0.1)
I
2 (I/O-0.2)
I
3 (I/O-0.3)
I
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)
I
9 (I/O-1.1)
I
10 (I/O-1.2)
I
11 (I/O-1.3)
I
12 (I/O-1.4)
I
13 (I/O-1.5)
I
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 4
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
Signal
Reserved
Tie High
Reserved
Tie High
Reserved
Tie High
Reserved
Tie High
Reserved
Tie High or Low
Reserved
Tie High or Low
Reserved
Tie High or Low
Reserved
Tie High or Low
Reserved
Tie High
Reserved
Tie High
P2PWRGDN
Port 2 power good input
P3PWRGDN
Port 3 power good input
P4PWRGDN
Port 4 power good input
Reserved
Tie High
Reserved
Tie High or Low
Reserved
Tie High or Low
Table 6.7 I/O Expander 2 Signals
Signal
P0LINKUPN
Port 0 link up status output
Reserved
Tie High or Low
P2LINKUPN
Port 2 link up status output
P3LINKUPN
Port 3 link up status output
P4LINKUPN
Port 4 link up status output
Reserved
Tie High or Low
Reserved
Tie High or Low
Reserved
Tie High or Low
P0ACTIVEN
Port 0 activity output
Reserved
Tie High or Low
P2ACTIVEN
Port 2 activity output
P3ACTIVEN
Port 3 activity output
Table 6.8 I/O Expander 4 Signals (Part 1 of 2)
6 - 10
Description
Description
February 1, 2011
Advertisement
Table of Contents
