Kenwood KDC-W4031 [9/38] Microcomputer s terminal description

KDC-W4031/W4031Y/W409/W409Y

KDC-W431GY/W4531/W4531Y/WF431A

Pin No.

Active

Pin Name I/O Application Processing Operation

(H/L)

50 FLAGIN I C2Err impossibility detection.

L : Correction is possible.

H : Correction is impossible.

51~61 NC -

62 DVSS - GND.

63 L NMI I Non-maskable interrupt request.

64 DVCC - Power supply terminal.

65~77 NC -

78 NC/BOOT I

Mask : Not connected. Flash : For writing (Active “L”).

L : Write, H : Nomal condition

79,80 NC -

81 POND3.3 O Digital 3.3V power-on control terminal. H : POWER ON

82 L MUTEL O Lch audio mute control.

83 L MUTER O Rch audio mute control.

84 SDA I/O I2C data (Main µ-com).

85 SCL I/O I2C clock (Main µ-com).

86 L MSTOP I Stand-by comeback interrupt. L : Stop, H : Stop is released.

87 NC -

88 L DMUTE O Driver mute. L : MUTE ON, H : MUTE OFF

89 DVCC - Power supply terminal.

90 NC -

91 DVSS - GND.

92,93 NC - GND.

94 MSEL I Memory capacity switching terminal. H : Capacity size down, L : Capacity size up

95 NC - GND.

96 ASEL I Audio output polarity switch. H : Reverse output, L : Non-reverse output

97 CHSEL I Changer destination terminal. H : Changer, L : Other source

98 SEL0 I µ-com destination terminal 0.

99 SEL1 I µ-com destination terminal 1.

100 VREFH I Reference power supply input terminal for ADC (H). Back-up 3.3V

MICROCOMPUTER’S TERMINAL DESCRIPTION