Onkyo HT-R540 Service Manual page 57

IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-2
Q201 : D707E001RFP250 (32 bit Floating-Point Digital Signal Processor)-2/7
SYSTEM DIAGRAM with PERIPHERALS
C67x+
DSP Core
Program
Cache
Crossbar Switch
EMIF
ASYNC
FLASH
100 MHz
SDRAM
DSP
McASP0
192K
Bytes
SPI1
RAM
I2C0
McASP1
768K
Bytes McASP2
ROM
SPIO
I2C1
RTI
dMAX
PLL OSC
Host
Microprocessor
Audio Zone 1
SPI or I2C
Control (optional)
Audio Zone 2
Audio Zone 3
DSP Control
SPI or I2C
TX-SR504/504E/8450
CODEC, DIR,
ADC, DAC, DSD,
Network
CODEC, DIR,
ADC, DAC, DSD,
Network
Digital Out
5 Independent Audio
Zones (3 TX + 2 RX)
16 Serial Data Pins