Microprocessor And Ic Data - Marantz PMD351 Service Manual

12. MICROPROCESSOR AND IC DATA

Q303:BU2630FV
Pin descriptions
Q381:CS4338
SERIAL DATA INPUT
DE-EMPHASIS / SCLK
LEFT / RIGHT CLOCK
MASTER CLOCK
No. Pin Name I/O
1 SDATA I Serial Audio Data Input - two's complement MSB-first serial data is input on this pin.
The data is clocked into the CS4334/5/8/9 via internal or external SCLK, and the channel
is determined by LRCK.
2 DEM/SCLK I De-Emphasis/External Serial Clock Input - used for de-emphasis filter control or exter-
nal serial clock input.
3 LRCK I Left/Right Clock - determines which channel is currently being input on the Audio Serial
Data Input pin, SDATA.
4 MCLK I Master Clock - frequency must be 256x, 384x, or 512x the input sample rate in BRM and
either 128x or 192x the input sample rate in HRM.
5 AOUTR O Analog Right Channel Output - typically 3.5 Vp-p for a full-scale input signal.
6 AGND I Analog Ground - analog ground reference is 0V.
7 VA I Analog Power - analog power supply is nominally +5V.
8 AOUTL O Analog Left Channel Output - typically 3.5 Vp-p for a full-scale input signal.
DEM/SCLK
3
LRCK
Serial Input
De-emphasis
Interface
1
SDATA
Interpolator
Modulator
Interpolator
Modulator
MCLK
SDATA
1 8
2 7
DEM/SCLK
3 6
LRCK
4 5
MCLK
Pin Function and Description
AGND VA
2 6 7
Voltage Reference
∆∑
Analog
DAC Low-Pass
∆∑
Analog
DAC Low-Pass
4
AOUTL ANALOG LEFT CHANNEL OUTPUT
VA ANALOG POWER
AGND ANALOG GROUND
AOUTR ANALOG RIGHT CHANNEL OUTPUT
AOUTL
8
Filter
AOUTR
5
Filter
38