IC, MC44724A
Pin No.Pin NameI/ODescription
1CVBS/Cb/B1OAnalog composite video signal output or Cb or B signal output current drive (positive).
______________________Analog composite video signal output or Cb or B signal output current drive
2CVBS/Cb/B1O
(negative).
3CVBS/Cb/B1VddIPower Supply for CVBS/Cb/B DAC1 circuit.
4Y/G1OAnalog luminance or G signal output drive (positive).
_________
5Y/G1OAnalog luminance or G signal output drive (negative).
6Y/G1VddIPower Supply for Y/G DAC1 circuit.
7C/Cr/R1OAnalog chrominance signal output or Cr or R signal output current drive (positive).
______________
8C/Cr/R1OAnalog chrominance signal output or Cr or R signal output current drive (negative).
9C/Cr/R1VddIPower Supply for C/Cr/R DAC1 circuit.
10DAVssIGround for DAC circuit.
11Ibias1OReference current for the 1st set of 3 DACs.
12Vref1IReference full scale voltage for the 1st set of 3 DACs.
13DAVddIPower Supply for the DACs.
14Vref2IReference full scale voltage for the 2nd set of 3 DACs.
15Ibias2OReference current for the 2nd set of 3 DACs.
16NCNNo Connect to pin.
17CVBS/Cb/B2OAnalog composite video signal output or Cb or B signal output current drive (positive).
_______________________Analog composite video signal output or Cb or B signal output current drive
18CVBS/Cb/B2O
(negative).
19CVBS/Cb/B2VddIPower Supply for CVBS/Cb/B DAC2 circuit.
20Y/G2OAnalog luminance or G signal output current drive (positive).
_________
21Y/G2OAnalog luminance or G signal output current drive (negative).
22Y/GVddIPower suuply for Y/G DAC2 circuit.
23C/Cr/R2OAnalog chrominance signal output or Cr or R signal output current drive (positive).
______________
24C/Cr/R2OAnalog chrominance signal output or Cr or R signal output current drive (negative).
25C/Cr/R2VddIPower Supply for C/Cr/R DAC2 circuit.
26ChipAII2C chip address select {0 : 40 (hex) /41 (hex) 1 : 1D (hex) /1E (hex)}.
27TESTITEST pin (Grounded).
28DVssIGround for Digital circuit.
29CLOCKI27MHz clock input.
30DVddIPower Supply for Digital circuit.
__________
31ResetIReset signal, active LOW.
___________
32PAL/NTSCINTSC/PAL select. This pin is sampled only at Reset. (NTSC : Low PAL : High).
33SOOIN SPI mode, serial data output/In I2C mode, Grounded.
34SDA/SII/OSerial data input, Open drain output/ If SPI mode, serial data input.
35SCL/SCKISerial clock.
36SELIConnect to Ground/If SPI mode, this pin is chip select.
37DVddIPower Supply for Digital circuit.
38DVssIGround for Digital circuit.
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