LV25700PM Datasheet, PDF (52/68 Pages) Sanyo Semicon Device – For Car Radio Single chip Tuner IC

SA25. SNC Threshold Value Adjustment
D7
D6
D5
DTESTSW
SNCINC1
SNCINC0
LV25700PM
D4
SNC_DAC4
D3
SNC_DAC3
D2
SNC_DAC2
D1
SNC_DAC1
D0
SNC_DAC0
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
Function
SNC starting point threshold value = 0.7V
0
0
0
0
0
AM RF AGC (soft) threshold value = 0.7V
SNC starting point threshold value = 0.73V
0
0
0
0
1
AM RF AGC (soft) threshold value = 0.73V
↓
SNC starting point threshold value = 1.80V
1
1
1
1
0
AM RF AGC (soft) threshold value = 1.80V
SNC starting point threshold value = 1.83V
1
1
1
1
1
AM RF AGC (soft) threshold value = 1.83V
0
0
SNC slope = Gentle
↓
1
1
SNC slope = S teep
0
DAC TEST = Normal
1
DAC TEST = DAC TEST MODE
SA26. De-emphasis Switching/HCC Threshold Value Adjustment
D7
D6
D5
D4
D3
DEEMPSW
MO_ST_SW
IRR_SW
HCC_DAC4
HCC_DAC3
D2
HCC_DAC2
D1
HCC_DAC1
D0
HCC_DAC0
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
Function
0
0
0
0
0 HCC starting point threshold value = 0.50V
0
0
0
0
1 HCC starting point threshold value = 0.53V
↓
1
1
1
1
0 HCC starting point threshold value = 0.47V
1
1
1
1
1 HCC starting point threshold value = 1.50V
0
Image rejection fine adjustment OFF [when SA6: ANT-DAC is used]
1
Image rejection fine adjustment ON [when SA6: IRR-DAC is used]
0
Forced monaural = OFF
1
Forced monaural = ON
0
De-emphasis = 50μsec
1
De-emphasis = 75μsec
SA27. FM RF Automatic Adjustment Mode Setting
D7
D6
D5
D4
D3
D2
-
-
USR_RF_TUNE FM_PIND_OFF USR_NRML
-
D1
D0
-
IFT_TRANS
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
Function
0 Not used.
1 MIX TRANS mode (FM normal)
0
0
0
Not used. Fixed at 0.
1
FM PIN diode forced OFF (for experimentation)
0
Default setting
0
0
0
Not used. Fixed at 0.
* D5: Auto Tune [0: ON/1:OFF], D4: Pin D [0: Normal/1: OFF = Auto tune], D3: Counter [0: ON = At auto tune/1: OFF]
No.A1709-52/68