LV25200M Datasheet, PDF (38/45 Pages) Sanyo Semicon Device – Bi-CMOS IC Single chip Tuner IC for Car Radio

LV25200M
Continued from preceding page.
No.
Control block/data
(21) Phase comparator control
data
DZ0, DZ1
(22) Charge pump control data
DLC
(23) IC test data
TEST0
TEST1
TEST2
(24) RF-DAC control
D31-0 to D31-8
(25) Internal monitor changeover
data
D31-9
(26) ANT-DAC control
D31-10 to D31-18
(27) MSLOP Control changeover
data
D31-19
(28) Band variable filter control
data
D31-20 to D31-25
(29) Band variable filter mode
setting
D31-26 to D31-27
Description
¤ Data to control the dead band of phase comparator
DZ1
DZ0
Deadban mode
0
0
DZA
0
1
DZB
1
0
DZC
1
1
DZD
* DZA at power ON and power reset
¤ Data to set the charge pump output to the low level (VSS level) in a forced manner.
DLC=1: Low level
=0: Normal operation
* When the VCO control voltage (Vtune) is deadlocked because VCO stops oscillation at
0V, this data sets the charge pump output to the low level and Vtune to VCC, enabling
escape from the deadlock state. Normal operation mode at power ON and power reset
¤ IC test data
Set as follows:
TEST0=0
TEST1=0
TEST2=0
* All of test data is set to “0” at power ON and power reset.
¤ Causes application of the control voltage to the RF tuning circuit (varactor).
9BIT
¤ Data to changeover the internal monitor.
1BIT
¤ Causes application of the control voltage to the ANT tuning circuit (varactor).
9BIT
¤ Data to change over the FM MUTE curve inclination.
1BIT MSLOP
0 Mute_D (steep inclination)
1 Mute_D (gentle inclination)
¤ Narrow/wide band - (MIN/MAX) data to set the band variable filter
Each 3bits for narrow and wide bands
Band variable filter
Narrow/wide band MIN/MAC control value
Narrow LMT Cont
Wide LMT Cont
D20 D21 D22
000
100
010
•
•
101
011
111
Min (40k)
Max (80k)
D23 D24 D25
0 0 0 Max (220k)
100
010
•
•
101
011
111
Min (150k)
¤ Data to set the mode of band variable filter.
2BIT
Filter-Fix_SW
D26
D27
Filter-Mode
0
0
Variable
1
0
Narrow-Fix
0
1
Wide-Fix
1
1
Dont Care
Related data
(30) DAC TEST select data
D31-29
(31) S-meter shifter control
D32-0 to D32-4
(32) FM MUTE-ON-adj/
AM NC stop control
D32-5 to D32-9
(33) FM MUTE-ATT/
AM NC Gate-Time control
D32-10 to D32-15
¤ Data to select the output circuit of internal DAC circuit
¤ Controls the output value of FM S-METER shifter circuit.
5BIT
¤ FM: Controls FM MUTE-ON-adj characteristic.
AM: Controls the sensitivity of AM NC stop.
5BIT
¤ FM: Controls FM MUTE-ATT characteristic.
AM: Controls the width of AM NC Gate-Time characteristic.
6BIT
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