EP7309_05 Datasheet, PDF (10/51 Pages) Cirrus Logic – High-performance, Low-power, System-on-chip with Enhanced Digital Audio Interface

EP7309
High-Performance, Low-Power System on Chip
Internal Boot ROM
The internal 128 byte Boot ROM facilitates download of saved
code to the on-board SRAM/FLASH.
Packaging
The EP7309 is available in a 208-pin LQFP package, 256-ball
PBGA package or a 204-ball TFBGA package.
Pin Multiplexing
The following table shows the pin multiplexing of the DAI,
SSI2 and the CODEC. The selection between SSI2 and the
CODEC is controlled by the state of the SERSEL bit in
SYSCON2. The choice between the SSI2, CODEC, and the
DAI is controlled by the DAISEL bit in SYSCON3 (see the
EP7309 User’s Manual for more information).
Pin
Mnemonic
I/O
DAI
SSI2 CODEC
SSICLK
SSITXDA
SSIRXDA
I/O
SCLK
SSICLK PCMCLK
O
SDOUT SSITXDA PCMOUT
I
SDIN
SSIRXDA PCMIN
Table 17. DAI/SSI2/CODEC Pin Multiplexing
Pin
Mnemonic
I/O
DAI
SSI2 CODEC
SSITXFR
I/O
LRCK
SSITXFR PCMSYNC
SSIRXFR
I
MCLKIN SSIRXFR
p/u
BUZ
O MCLKOUT
Table 17. DAI/SSI2/CODEC Pin Multiplexing
The following table shows the pins that have been multiplexed
in the EP7309.
Signal
RUN
nMEDCHG
PD[0]
PE[1:0]
PE[2]
Block
Signal
Block
System
Configuration
Interrupt
Controller
GPIO
GPIO
GPIO
CLKEN
System
Configuration
nBROM
Boot ROM
select
LEDFLSH
LED Flasher
BOOTSEL[1:0]
System
Configuration
CLKSEL
System
Configuration
Table 18. Pin Multiplexing
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©Copyright Cirrus Logic, Inc. 2005
(All Rights Reserved)
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