ICS9LPRS480 Datasheet, PDF (11/25 Pages) Integrated Device Technology – Programmable System Clock Chip for ATI RS780 - K8TM based Systems

Integrated
Circuit
Systems, Inc.
Differential Output Power Management Table
True Complement
PD# CLKREQ#
SMBus
output
Output
Register OE
Free-Run
1
0
Enable
Running
0
X
X
Low/20K
1
1
Enable
Running
X
X
Disable Low/20K
Note: 20K means 20Kohm Pull Down
Running
Low
Running
Low
True
output
Complement
Output
CLKREQ# Selected
Running
Low/20K
Low/20K
Low/20K
Running
Low
Low
Low
Singled-ended Power Management Table
SMBus
PD# _{Register OE}
48MHz
27MHz
1
Enable
Running Running
0
Enable
Low
Low
HTT66MHz
Running
Low
REF(2:0)
Running
Hi-Z
ICS9LPRS480
1391D—02/02/09
11