MIC2551A
Micrel
SUS
0
0
1
1
OE#
0
1
0
1
D+, D–
Driving
Receiving
Hi-Z
Hi-Z
RCV
Active
Active
0
0
VP/VM
Active
Active
Not active
Active
Function
Normal transmit mode.
Normal receive mode.
Low power state.
Receiving during suspend (low power
state) (Note 1).
Note 1. During suspend VP and VM are active in order to detect out-of-band signaling conditions.
Table 1. Function Selection
OE# = 0:
Input
VP
0
0
1
1
OE# = 1:
Input
D+
0
0
1
1
X - Undefined
Output
VM
0
1
0
1
D+
0
0
1
1
D-
0
1
0
1
RCV
X
0
1
X
Result
SE0
Logic 0
Logic 1
Undefined
Output
D-
0
1
0
1
VP
0
0
1
1
VM
0
1
0
1
RCV
X
0
1
X
Result
SE0
Logic 0
Logic 1
Undefined
Table 2. Truth Table During Normal Mode
May 2004
3
M9999-051004
MICREL [ MICREL SEMICONDUCTOR ]
