I/O O I I � O O O I I I I I � I I I I I I I I O � � O O O I I I I O I O O � � � � I � � � � I I O O O O
Description Slave data/request (Connected to MCU U.SREQ) Display clock (Connected to MCU U.CLOCK) Not used (Connected to ground) Power supply +5 V To tuner latch To tuner data To tuner clock PLL data in Auto stop input Stereo input Not used (Connected to ground) Not used (Connected to ground) Ground (Connected to ground) Not used (Connected to ground) TH Protector input Protector input AC power check Not used (Connected to ground) Not used (Connected to ground) Not used (Connected to ground) Not used (Connected to ground) Video select SW4 Not used Not used Video select SW3 Video select SW2 Video select SW1 Digital function Tape NO/YES input I VIDEO3 NO/ YES input DTS NO/ YES input Power amp mute ON/OFF output 96K NO/YES input Tuner muting Surround muting (Connected to ground) Hardware standby (Connected to power supply +5 V) MD2 (To MCU MD2) MD1 (Connect to power supply) MD0 (To MCU MD0) Reset (Connected to MB90553 U.RESET) Ground (Connected to ground) External ceramic filter 16MHz is connected to this terminal External ceramic filter 16MHz is connected to this terminal Power supply +5V Flash memory rewrite (Connected to ground) Flash memory rewrite (Connected to ground) 4/8 relay Pre relay Front speaker A relay Front speaker B relay
