LV23000M Datasheet, PDF (7/14 Pages) Sanyo Semicon Device – Single-Chip Tuner IC for Radio/Cassette Players

LV23000M
Continued from preceding page.
No.
Control block/data
Phase comparator
control data
(8)
DZ0, DZ1
Description
• Controls the phase comparator dead band.
DZ1 DZ0
0
0
0
1
1
0
1
1
Dead band mode
DZA
DZB
DZC
DZD
Dead band widths: DZA < DZB < DZC < DZD
Output port data
• Sets the outputs from the BO1 and BO2 output ports.
(9)
Data = 0: Open
BO1, BO2
= 1: Low
Charge pump
control data
(10)
DLC
• Forcibly controls the state of the charge pump output.
DLC
0
1
Charge pump output
Normal operation
Forced to the low level.
If deadlock occurs due to VCO oscillation when the VCO control voltage (Vtune) is 0 V, the
deadlock can be released by setting the charge pump output low and setting Vtune to V_CC.
(This is referred to as a deadlock clear circuit.)
• This bit should normally be set to 1. However, setting this bit to 0 sets the device to
(11)
IFS
degraded input sensitivity mode, and the input sensitivity is reduced by about 10 to
30 mV rms.
• IC test data
IC test data
TEST0
(12)
TEST1 All bits must be set to 0.
TEST0 toTEST2
TEST2
All these bits are set to 0 after the power on reset.
(13)
DNC
• This bit must be set to 0.
Forced mono
control data
• Determines the output of the STSW output port and controls the forced stereo function.
(14)
Data = 0: Mono
STSW
= 1: Stereo
• Determines the outputs of the SDC0 and SDC1 ports and sets the SD sensitivity.
SD sensitivity
adjustment data
(15)
SDC0 SDC1
0
0
SD sensitivity (typ)
42 dBµV
(16)
SDC0
SDC1
0
1
1
0
45 dBµV
51 dBµV
1
1
56 dBµV
Related data
No. 6903-7/14