MIC2551 Datasheet, PDF (3/10 Pages) Micrel Semiconductor – USB Transceiver

MIC2551
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
Note 1. During suspend VP and VM are active in order to detect out of band signaling conditions.
Table 1. Function Selection
Micrel
Function
Normal transmit mode
Normal receive mode
Low power state
Receiving during suspend (low power
state) (Note 1)
OE# = 0:
Input
VP
0
0
1
1
OE# = 1:
Input
D+
0
0
1
1
X - Undefined
Output
VM
D+
D-
RCV
0
0
0
X
1
0
1
0
0
1
0
1
1
1
1
X
Output
D-
VP
VM
RCV
0
0
0
X
1
0
1
0
0
1
0
1
1
1
1
X
Table 2. Truth Table During Normal Mode
Result
SE0
Logic 0
Logic 1
Undefined
Result
SE0
Logic 0
Logic 1
Undefined
January 2003
3
MIC2551