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參數(shù)資料
| 型號： | TB1261F |
| 廠商： | Toshiba Corporation |
| 英文描述： | TOSHIBA BiCMOS INTEGRATED CIRCUIT, SILICON MONOLITHIC |
| 中文描述： | 東芝的BiCMOS集成電路，硅單片 |
| 文件頁數(shù)： | 23/66頁 |
| 文件大?。?/td> | 1544K |
| 代理商： | TB1261F |
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TB1261F/TB1262F
2002-6-30 23 / 66
READ MODE
! General warning
The read bus flags indicate that a certain signal is
detected at the moment. But reliability of detection
result is not so accurate if checking only one flag, that
confirming several flags, which means similar result
by each other, at the same time is recommended.
POR
Data
Descriptions
0
After the first bus accessed, always 0
1
A reset condition occurred just before
IF Lock
Data
Descriptions
0
IF PLL lock detection, locked out
1
Locked in
This bit shows the locked/unlocked status of PIF PLL.
H
ock
Data
Descriptions
0
Horizontal sync lock detection, Lock out
1
Lock in
The 'H Lock' indicates whether H sync pulses are
within the certain windows which generated by H
counter.
Color System
Data
Descriptions
0 0 0
No color
0 0 1
4.43 PAL
0 1 0
M-PAL
0 1 1
N-PAL
1 0 0
358 NTSC
1 0 1
443 NTSC
1 1 0
SECAM
1 1 1
N/A
AFT-W
Data
Descriptions
0
Out of the AFT window
1
In the AFT window
AFT
Data
Descriptions
0
Upper frequency
1
Lower frequency
V Freq
Data
Descriptions
0
50 Hz
1
60 Hz
Vertical oscillation frequency.
VSTD
Data
0
1
Vertical synchronization pulse is within the window of
0.625H from 312.5/262.5, or not.
Noise
Data
Descriptions
0
Lower noise level than reference voltage
1
Larger
It shows the noise level on H sync pulse. The slice level
is set by 'Noise det' of IICBUS.
The detected result is hold one H period after every H
sync periods. Decide the result with the majority of
several readings.
RF AGC
Data
Descriptions
0
High
1
Low
This bit can show the DC voltage for RF AGC pin.
Cin DC
Data
Descriptions
0
Cin voltage not GND
1
GND
The DC voltage on C-in terminal. It is to detect S-jack
switch status with external circuit.
Sound dev
Data
Descriptions
0
within the range ( of 300% )
1
out of range
'Sound dev' detects over deviation of the SIF, which set
to '1' in detecting the frequency offset of more than
157kHz, or 300%.
The detected result is hold until the first 'read' is
commanded by means of S/R latch, and reset to '0'
after that. Decide the result with the majority of
several readings.
Station det
Data
Descriptions
0
No-Signal
1
Tuned
This bit shows the status whether the FM PLL is
locked or unlocked. However it may not work so
accurate for field signal, that use other parameters to
control sound system.
P VCO err
Data
Descriptions
0
Ok
1
error detect
This bit is only for evaluation.
Descriptions
Non standard vertical frequency
Standard vertical frequency
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