Casio QV-30 Specifications download pdf (Page 10)

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Pin No. Terminal Name IN/OUT Function

85, 86 AVCC, AVREF IN Connected to VCC3.

87 - 89 PC0 - PC2 IN Key input terminal.

90 PC3 IN Low battery detection terminal.

91 AVSS IN Ground terminal.

92 - 95 PC4 - PC7 - Not used.

96 VSS IN Power source.

97, 98 PB0, PB1 IN/OUT Port B.

99 VCC IN Power source.

100 - 105 PB2 - PB7 IN/OUT Port B.

106 VSS IN Ground terminal.

107 RXDO IN Data input terminal from a personal computer.

108 TXDO OUT Data output terminal to a personal computer.

109, 110 PB10, PB11 IN/OUT Port B.

111 PB12 - Not used.

112 PB13 - Not used.

Data Compressor

The color difference and the luminance data is compressed about 1/7 to increase the

numer of images in memory. Up to 96 images can be stored.

Y (luminance siganal) data : 480 x 224 byte

Cb (color difference signal B-Y) data : 160 x 112 byte 21,120 byte

Cr (color difference signal R-Y) data : 160 x 112 byte 1/7

Total: 143,360 byte 21,120 byte

Control

Timing

Data

Compressor

V RAM

Control

Encoder

D/A

V RAM

Encoder

The color and the luminance data are mixed internally to make the video signal, and

send it to the linear PCB and the video out terminal.

2 Gate Array (IC700)

1 ... 9 10 11 ... 40

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Casio QV-30 Specifications Page 10