
COMMERCIALTEMPERATURERANGE
10
IDTCV119E
CLOCKGENERATORFORDESKTOPPCPLATFORMS
BYTE 24
Bit
Output(s) Affected
Description/Function
0
1
Type
Power On
7
WDHRB
WD hard alarm status read back
R
6
WDSRB
WD soft alarm status read back
R
5
4
3
2
0
1
FSR1
HW FS1 read back
R
HW FS1
0
FSR0
HW FS0 read back
R
HW FS0
BYTE 25: CPU PLL CONTROL
Bit
Output(s) Affected
Description/Function
0
1
Type
Power On
7
CPU frequency band source select
0 = selected by HW latched FS[1:0], CFS[2:0]
HW
SW
RW
0
1 = selected by BS[2:0], CFS[2:0]
6
BS2, Band select 2
BS[2:0] CFS[2:0] select CPU frequency(1)
RW
0
5
BS1, Band select 1
BS[2:0] CFS[2:0] select CPU frequency(1)
RW
0
4
BS0, Band select 0
BS[2:0] CFS[2:0] select CPU frequency(1)
RW
0
3
CFS2
BS[2:0] CFS[2:0] select CPU frequency(1)
RW
0
2
CFS1
BS[2:0] CFS[2:0] select CPU frequency(1)
RW
0
1
CFS0
BS[2:0] CFS[2:0] select CPU frequency(1)
RW
0
CPU N Programming Enable
Disable
Enable
RW
0
NOTES:
1. See SW FREQUENCY SELECTION table.
BYTE 23
Bit
Output(s) Affected
Description/Function
0
1
Type
Power On
Recommended
7
48MHz0
Outputenable
Tristate
Enable
RW
1
6
24_48MHz
Outputenable
Tristate
Enable
RW
1
5
REF1
Outputenable
Tristate
Enable
RW
1
4
REF0
Outputenable
Tristate
Enable
RW
1
3
Reserve
10
2
Reserve
Outputenable
Tristate
Enable
RW
1
0
1
Reserve
Outputenable
Tristate
Enable
RW
1
0
Reserve
0