Akai AM-M459 - System Specifications; Amplifier Specifications; Turntable Specifications; Speaker System Placement and Care

SN74LS624 (VCO)
Explanation of terminal
Shift clock output of digital audio data.
Serial output of demodulated digital audio data.
Descreminate pulse output of L or R channels.
Word clock output.
Lock trigger pulse output when external PLL became unlock condition.
Low-Active pulse output to setting the sink current of external PLL.
GND
High-Active pulse output to setting the source current of external PLL.
Clock input which abstracted by PLL. (256fs)
Pulse output for aperture correction.
Pulse output for aperture correction.
Block detection pulse output for synchronizing the C-bit block.
Audio serial data first select.
“H”: LSB first. “L’”: MSB first.
Digital I/O data input which modulated by digital audio interface format.
BINARY - TO 4
DECODER
Clock (128 fs) output which using the master clock of external instruments.
Control signal
(“L” = Normal mode, ““H” = Hi-impeadance mode)
Control signal input of Normal or test modes.
(“H” = TEST mode, “L” = NORMAL mode.)
Clock input for mark the DISCHG pulse for PLL.
Control input for the polarity set of LRCK.
(“H” = L ch > High, R ch > Low, “L” = L ch > Low, R ch > High)
Power supply
Validity flag (V-bit) output.
User definable data (U-bit) output.
Channel status data (C-bit) output.
PCMS56P (16 Bit D/A C t
Emphasis
information
output.
(‘“‘H”
=
Emphasis
ON)
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Copy inhibit information output. (““L’ = Inhibit)
ID1 output
ID2 output
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