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(6) DFM (Clock doubler)
Symbol
Name
Address
DFM
DFMCR0
control
E8H
register 0
DFM
DFMCR1
control
E9H
register 1
7
6
5
ACT1
ACT0
DLUPFG
R/W
R/W
R
0
0
0
f
DFM
LUP
Lockup flag
FPH
0: End LUP
00 STOP STOP f
OSCH
1: Do not
f
01 RUN
RUN
OSCH
10 RUN STOP f
DFM
11 RUN STOP f
OSCH
D7
D6
D5
R/W
R/W
R/W
0
0
0
Input frequency 4 to 8.25 MHz (at 2.7 to 3.6 V): Write 0BH
Input frequency 2 to 2.5 MHz (at 2.0V ± 10%): Write 1BH
91C824-246
4
3
2
DLUPTM
R/W
0
Lockup time
12/
0: 2
f
OSCH
10/
1: 2
f
OSCH
D4
D3
D2
R/W
R/W
R/W
1
0
0
DFM correction
TMP91C824
1
0
D1
D0
R/W
R/W
1
1
2008-02-20
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