CM6631A Datasheet, PDF (8/16 Pages) C-Media Electronics – USB 2.0 High-Speed True HD Audio Processor

CM6631A
USB 2.0 High-Speed True HD Audio Processor
4 Block Diagram

Self-Power
CM6631A Functional Block Diagram

GPIO/JD
PDSW
Bus-Power
3.3V-to-2.5V
Regulator
GPIO Interface
Master I2C
Interface
Slave I2C
Interface
Parallel
EEPROM/Flash
Interface
MIDI
Local Address Data Bus
I/O
Port
Power-On
Reset
Interrupt
Processor
Control
Processor
8051 Processor
USB D+/D-
USB2.0
Transceiver
Interface
(UTMI)
12MHz
Optional
45.158M
and
49.152MHz
PLL
Clock-
Generator
USB
Core
Logic
Command Bus
Data Bus
PDMA_B (SPO)
PDMA_C (2CH)
PDMA_A (2CH)
RDMA_A (2CH)
RDMA_B (2CH)
RDMA_C (SPI)
FIFO
S/PDIF Out
2CH I2S/HDA-
Out
2CH
I2S/HDA-Out
Controller
2CH I2S/
HDA-In
Controller
2CH
I2S/HDA-In
Controller
S/PDIF IN
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