Kenwood X-45 Service Manual page 16

X-45/85
CIRCUIT DESCRIPTION
Serial Data Format
An 8&-bit shift register is used as the serial data format.
The shift register fetches CLK and DATA signals only
when the STB signal is high, then latches data at the
falling edge of the STB signal.
SV
STB ov
Data latch
The following control is performed according to the data
contents :
a Control register Volume register
TAPE
SELECT 1
TAPE
SELECT 2
TAPE Twice normal speed selection
SPEED
Normal speed selection
METER Meter sensitivity improved by 20 dB
peter Tar Meter sensitivity normal
INPUT
SELECT 1
Mute
INPUT
SELECT 2 DACS
Enters the muting state when all bits are set high.
Playback mode selection R/L R-channel register selection
RE eeE Control register selection orn Volume register selection
* Whether to control the condition or volume control is judged by the
content of bit 7.
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