Audio ICs
BU2624AF
Explanation of the data
(1) Division data: For D
0
through D
15
(When S = 1, use
D
4
through D
15
.)
(2)
(3)
(4)
CT: Frequency measurement beginning data 1:
Begins measurement.
0: Resets internal counter, IF1 and IF2 go to pul
down.
Output port control data: P0, P1, P2, P3, P4
PL PH: Control of charge pump output
PH = 0, PL = 0 PLL operation
PH = 0, PL = 1 PD1 PD2 LO level
PH = 1, PL = 0 PD1 PD2 HI level
PH = 1, PL = 1 PD1 PD2 LO level
(5)
R
0
, R
1
, R
2
, standard frequency data
(6) S: switch between FMIN and AMIN 0: FMIN
1: AMIN
(7) PS: If this bit is set to ON while AMIN is selected,
swallow counter division is possible.
(8) IFS: Selection between IF1 and IF2 during IF
count
0: IF1 1: IF2
(9) GT: Frequency measurement time and unlock
detection ON / OFF
(10) TS: Test data (0) is input
166
ROHM [ ROHM ]
