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參數(shù)資料
| 型號： | TMC57750PM |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | PLASTIC, LQFP-64 |
| 文件頁數(shù)： | 10/16頁 |
| 文件大小： | 257K |
| 代理商： | TMC57750PM |
TMC57750
1/4-INCH RS-170 TIMER
SOCS041 – JUNE 1994
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
Terminal Functions
TERMINAL
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
ABG
61
O
Antiblooming gate
ABM
60
O
Antiblooming gate mid-level
ABGSEL
62
I
Antiblooming-gate select. ABGSEL selects the frequency of the antiblooming gate. When ABGSEL
is high, the standard frequency of 6.25 MHz is selected. When low, the double frequency of 12.5
MHz is selected.
CLKIN
42
I
Clock in
CBLK
20
O
Composite blank
CPOB1
23
O
Optical black clamp one
CPOB2
24
O
Optical black clamp two
CSYNC
21
O
Composite sync
CDS
35
O
Co9rrelated double sampling
DSEL
52
I
Delay select. DSEL selects the delay of CDS and S/H with respect to SRG. When DSEL is high,
a standard delay is selected. When low, an additional delay of 5 ns is selected.
DSSEL
64
I
Display-scan select. DSSEL selects the display-scanning mode. When DSSEL is high, the interlace
mode is selected. When low, the noninterlace mode is selected. In the interlace mode, one field is
262.5 horizontal lines and one frame is 525 horizontal lines. In the noninterlace mode, one field is
262 horizontal lines and one frame is 524 horizontal lines.
ED
17
I
Exposure down. ED decreases the integration of the CCD sensor.
EU
18
I
Exposure up. EU increases the integration of the CCD sensor.
EFSEL1,
EFSEL2,
EFSEL3
9, 10, 11
I
Electronic-function select. EFSEL1, EFSEL2, and EFSEL3 selects the operational modes (see
Table 1 and Figure 4).
FI
49
O
Field index
FSSEL
63
I
Frame-shift select. FSSEL selects the parallel-transfer frequency. When FSSEL is high, the
standard frequency of 12.5 MHz is selected. When low, the double frequency of 25 MHz is selected.
GND
4, 22, 36,
55
Ground
HD
46
O
Horizontal drive
HR
30
I
Horizontal reset
IAG1
58
O
Image-area gate 1
IAG2
57
O
Image-area gate 2
MCLK/4
37
O
Master clock divided by 4
MCLK/2
38
O
Master clock divided by 2
MINSEL
12
I
Minimum exposure-time select. MINSEL selects the minimum exposure time for the auto-iris mode.
When high, the exposure time of 1/50000 second is selected. When low, the exposure time of
1/8000 second is selected.
MON1, MON2,
MON3, MON4
5, 6,
7, 8
O
MON1, MON2, MON3, and MON4 are test-monitoring terminals and are not used in normal
operation.
PHSEL1,
PHSEL2
50, 51
I
Phase select. PHSEL1 and PHSEL2 determine the timing relation of S/H and CDS with respect
to SRG.
PHSEL1
PHSEL2
OPERATION
H
MODE1
L
H
MODE2
H
L
MODE3
L
MODE4
MODES1, 2, 3, and 4 are shown in Figure 3.
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