Pioneer VSX-LX70 Service Manual page 37

5
DSP Block Diagram
• CORE Block
DSP ASSY
Digital Audio
B/L
Data & Clock
(I2S) Output Data
• Power Block and GND Map
DSP ASSY
AWX8869- /J
1.2V
CN401
From
DIGITAL
MOTHER
Assy
GND GNDD
5
6
ROM
1M
2nd DSP
FREESCALE
56371
180MHz
B/L
3.3V
Data
1.25V
20MHz
DSP UCOM
3.3V
1.25V
DC/DC
REG
1st DSP
2nd DSP
3.3V &
3.3V &
1.2V
1.25V
GNDD
GNDD
Flash
Flash ROM
ROM
SRAMs
Logic ICs
3.3V
GNDD
GNDD
OSC
GNDD
VSX-LX70
6
7
SRAM ROM
4M 16M
1st DSP
SHARC EX
21366
MCK
330MHz
B/L B/L
3.3V
Data 1.2V Data
MCK: Master Clock
Audio Clock B/L: Bit & LR Clock
Data: Audio Data
REG
3.3V
3.3V
: Shows internal ground (GNDD)
7
8
Digital Audio
Data & Clock
(I2S) Input
VDD5
5.0V
From
DIGITAL
CN402
MOTHER
Assy
GNDD GND
8
A
B
C
D
E
F
37