Sony PLM-A55E, Руководство по обслуживанию

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YM-11P BOARD IC103 MC141628FUEB (Y/C SEPARATOR A/D, D/A CONVERTER)
Pin No. Pin Name I/O Function
1 VCOVDD — Power supply terminal (+5V) (for VCO)
2
BIAS I Bias current input terminal (for VCO)
3
OSCV I VCO control voltage input terminal Signal input from the PCOUT (pin
#¡
)
4 DAGND — Ground terminal (for D/A converter)
5
Y OUT O Brightness signal output terminal
6
DAVCC — Power supply terminal (+5V) (for D/A converter)
7 C OUT O Chroma signal output terminal
8
DAREF — Reference voltage terminal (for D/A converter)
9
IBIAS — Current control terminal of bias circuit for D/A, A/D converters
10 TEST I Setting terminal for the test mode (Normally: fixed at “L”)
11 PAL/NTSC I
Setting terminal for the video mode (NTSC/PAL)
“L”: PAL mode, “H”: NTSC mode (fixed at “L” in this set)
12
BYPASS I Setting terminal for the bypass selection (Normally: fixed at “L”)
13
PLLSEL I
For setting whether clock is entered by color subcarrier input (built-in PLL operation) or by
external clock input “L”: built-in PLL operation (fixed at “L” in this set)
14
ADGND — Ground terminal (for A/D converter)
15
ADVDD — Power supply terminal (+5V) (for A/D converter)
16 CLC I For setting time constant for internal clamp circuit (Normally: fixed at “H”)
17 CLOUT O Clamp voltage output terminal Not used (open)
18 V IN I Video signal input to the internal A/D converter
19 RBT —
Bottom reference voltage for A/D converter
Internal bottom reference voltage is supplied
20 RTP —
Top reference voltage for A/D converter
Internal top reference voltage is supplied
21 to 28 TB7 to TB0 I/O In/out terminal for the digital interface Not used (fixed at “L”)
29 CLK IN I Color subcarrier input from the CXA1950Q (IC201)
30 DVDD — Power supply terminal (+5V) (digital system)
31 PCOUT O Phase comparator output terminal
32 DGND — Ground terminal (digital system)