参数资料
型号: TA8795BF
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP60
封装: 14 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-60
文件页数: 4/45页
文件大小: 1139K
代理商: TA8795BF
TA8795BF
2001-01-15 12/45
O
System switch specifications
(Unless otherwise specified, VCC = 4.5V, Ta = 25°C±3°C)
Pin 42 system switch
SYS SW (PIN 42)
MODE
RECEIVER SYSTEM
VCC
Normal mode
PAL (B / G, etc), NTSC (3.58 / 4.43), SECAM
1 / 2 VCC
South American mode
M, N,
PAL (M / N / B / G, etc), NTSC (3.58 / 4.43), SECAM
GND (*)
Pseudo-PAL mode
M, N,
PAL (M / N / B / G, etc), NTSC (3.58 / 4.43)
*:
In Pseudo-PAL mode, PAL demodulation uses the NTSC demodulation circuit, CW tint adjustment is
supported, and a 1H delay line is not required (direct PAL demodulation).
(1)
Normal mode (pin 42-VCC)
Color system automatic detection output
Color system forced mode
M1
M2
M3
M4
INPUT MODE
RECEIVED
SIGNAL
PIN 31
PIN 38
PIN 15
PIN 40
M1
M2
M3
M4
SYSTEM
PAL
H
M
L
H
Open
PAL
SECAM
H
M
L
H
(**)
H
Open
SECAM
4.43NTSC
L
H
M
L
(**)
H
Open
4.43NTSC
3.58NTSC
L
M
L
(**)
H
Open
3.58NTSC
Black & white
L
M / L
L
H:
3V
M:
1.5V
L:
0V
Vth = 2.3V
**:
High-impedance drive
Special system switches
SW2: Input current switch (Ith = 0.6mA) PAL / SECAM receive mode
SW3: Input current switch (Ith = 0.6mA) Forced black & white mode
(in PAL / SECAM mode)
YNR: Voltage switch (Vth = 1.5V) PAL / NTSC receive mode
Vertical sync detection output
Pin 4 High level = 60Hz
Low level = 50Hz
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