參數(shù)資料
型號(hào)： TB1261F
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝： 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁(yè)數(shù)： 8/66頁(yè)
文件大?。?/td> 1538K
代理商： TB1261F
TB1261F/TB1262F
2002-6-30 16 / 66
S
S----Trap(100)
Trap(100)
[[[[ Sub;
Sub;
Sub; 0D
0D
0Dh
hh
h D2
D2
D2----D4
D4
D4 3 bits ]
3 bits ]
Data
Descriptions
000
S-trap Off
001
fo tuning min
111
fo tuning max
Trap fo tuning and on/off switch. Need to set the
tuning data for each sound system.
Strap
Strap----Q (00)
Q (00)
[[[[ Sub;
Sub;
Sub; 22
22
22h
hh
h D1
D1
D1----D0
D0
D0 2 bits ]
2 bits ]
Data
Descriptions
00
Q = 3
01
Q = 5
10
Q = 7 (recommended)
11
Q = 9
Sound trap Q control. Need to set the tuning data for
each sound system.
Strap
Strap----GD (00)
GD (00)
[[[[ Sub;
Sub;
Sub; 22
22
22h
hh
h D1
D1
D1----D0
D0
D0 2 bits ]
2 bits ]
Data
Descriptions
00
off
01
60 ns
10
90 ns
11
120 ns
Sound trap Group delay control. Need to set the tuning
data for each sound system.
L
L AGC
AGC
AGC----lim
lim
[[[[ Sub;
Sub;
Sub; 1A
1A
1Ah
hh
h D6
D6
D6 1 bit ]
1 bit ]
Data
Descriptions
0
on
1
off
AGC limiter for L system. It works when set L system.
PIF PLL u
[[[[ Sub;
Sub;
Sub; 22
22
22h
hh
h D5
D5
D5 1 bit ]
1 bit ]
Data
Descriptions
0
normal
1
1/3
Reduce the u of the PIF PLL
S trap
S trap----HP LP (00)
HP LP (00)
HP LP (00) [[[[ Sub;
Sub;
Sub; 22
22
22h
hh
h D7
D7
D7----D6
D6
D6 2 bits ]
2 bits ]
Data
Descriptions
00
off
01
1 dB
(HPF)
10
- 3 dB
(LPF)
11
- 2 dB
(LPF)
Frequency response control. Need to set the tuning
data for each sound system
S2
S2----Q
Q
[[[[ Sub;
Sub;
Sub; 22
22
22h
hh
h D4
D4
D4 1 bit ]
1 bit ]
Data
Descriptions
0
normal
1
fixed Q=3 for S2 trap
RFAGC
RFAGC----adj
adj
[[[[ Sub;
Sub;
Sub; 1A
1A
1Ah
hh
h D7
D7
D7 1 bit ]
1 bit ]
Data
Descriptions
0
Normal
1
adjusting mode
RF AGC delay point adjusting mode. See ***.
[[[[SIF
SIF
SIF]]]]
SIF
SIF----Freq
Freq
Freq (00)
(00)
[[[[ Sub;
Sub;
Sub; 0E
0E
0Eh
hh
h D1
D1
D1----D2
D2
D2 2 bits ]
2 bits ]
Data
Descriptions
00
5.5MHz
01
6.0MHz
10
6.5MHz
11
4.5MHz
Set the SIF frequency for BPF
Set the SIF frequency for Trap filter
Select the SIF FM demodulator band
select the de-emphasis speed
SIF
SIF----574
574
574 (0)
(0)
[[[[ Sub;
Sub;
Sub; 0E
0E
0Eh
hh
h D0
D0
D0 1 bit ]
1 bit ]
Data
Descriptions
0
Others
1
5.74MHz
To use this bit, an external BPF of 5.74MHz is required
Au
Au----G
G
G (0)
(0)
(0) [[[[ Sub;
Sub;
Sub; 0E
0E
0Eh
hh
h D4
D4
D4 1 bit ]
1 bit ]
Data
Descriptions
0
927mVrms at 25kHz/DEV
1
500mVrms at 25kHz/DEV
Audio Gain Switch for M system
FM
FM----band
band
band (0)
(0)
[[[[ Sub;
Sub;
Sub; 0E
0E
0Eh
hh
h D3
D3
D3 1 bit ]
1 bit ]
Data
Descriptions
0
Wide
1
Narrow
Select FM band width
It controls the bandwidth or pull-in range of the FM
demodulator. This bit should be set depending on the
region as to put wide/narrow bandwidth ceramic BPF.
SIF
SIF----in
in
in (0)
(0)
[[[[ Sub;
Sub;
Sub; 0D
0D
0Dh
hh
h D0
D0
D0 1 bit]
1 bit]
Data
Descriptions
0
Internal
1
External
Select 2nd SIF limiter input path. External BPF is
required in selecting 'External'.
Spl/ Int
Spl/ Int (0)
(0)
[[[[ Sub;
Sub;
Sub; 0C
0C
0Ch
hh
h D7
D7
D7 1 bit ]
1 bit ]
Data
Descriptions
0
Split carrier
1
Inter carrier
Split carrier / Inter carrier selecting.
DCNF (1)
[[[[ Sub;
Sub;
Sub; 20
20
20h
hh
h D6
D6
D6 1 bit ]
1 bit ]
Data
Descriptions
0
Normal
1
Speed up
DCNF Speed. Need to set '1 speed up' at least 500ms
after power on.
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