Pioneer VSX-AX4AVi-S Service Manual page 200

1
DSP Block Diagram
• CORE Block
A
DSP ASSY
M
CN352
Digital Audio
B/L
B
Data & Clock
(I2S) Output Data
C
• Power Block and GND Map
M
DSP ASSY
D
CN351
From
DIGITAL
MOTHER
Assy
GND GNDD
E
F
200
1
2
2nd DSP
MOTOROLA
56371
180MHz
B/L
Data
1.25V
20MHz
DSP UCOM (DIGITAL MOTHER ASSY IC201)
3.3V 1.20V
REG REG REG
1st DSP
3.3V &
1.2V
GNDD
Flash ROM
SRAMs
Logic ICs
3.3V
GNDD
CN501, CN502
VSX-AX4AVi-S
2
3
SRAM
4M
1st DSP
SHARC EX
21266
200MHz
B/L
3.3V
3.3V
Data 1.25V
Audio Clock
MCK: Master Clock
B/L: Bit & LR Clock
Data: Audio Data
3.3V 1.25V
REG
2nd DSP
3.3V &
1.25V
GNDD
OSC
3.3V
GNDD
: Shows internal ground (GNDD)
3
4
ROM
16M
CN351
MCK
Digital Audio
B/L
Data & Clock
Data (I2S) Input
VDD5
5.0V
From
DIGITAL
CN352
MOTHER
Assy
GNDD GND
4