EP7309-CB-C CIRRUS [Cirrus Logic], EP7309-CB-C Datasheet - Page 7
![no-image](/images/no-image-200.jpg)
EP7309-CB-C
Manufacturer Part Number
EP7309-CB-C
Description
HIGH PERFORMANCE LOW POWER SYSTEM ON CHIP ENHANCED DIGITAL AUDIO INTERFACE
Manufacturer
CIRRUS [Cirrus Logic]
Datasheet
1.EP7309-CB-C.pdf
(46 pages)
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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).
DS507PP1
SSICLK
SSITXDA
SSIRXDA
Mnemonic
Pin
Table Q. DAI/SSI2/CODEC Pin Multiplexing
I/O
I/O
O
I
SDOUT
SCLK
SDIN
DAI
Copyright 2001 Cirrus Logic (All Rights Reserved)
SSIRXDA
SSITXDA
SSICLK
SSI2
PCMOUT
PCMCLK
CODEC
PCMIN
The following table shows the pins that have been
multiplexed in the EP7309.
SSITXFR
SSIRXFR
BUZ
RUN
nMEDCHG
PD[0]
PE[1:0]
PE[2]
Mnemonic
Signal
Pin
Table Q. DAI/SSI2/CODEC Pin Multiplexing
High-Performance, Low-Power System on Chip
System
Configuration
Interrupt
Controller
GPIO
GPIO
GPIO
Table R. Pin Multiplexing
I/O
I/O
Block
O
I
MCLKOUT
MCLKIN
LRCK
DAI
CLKEN
nBROM
LEDFLSH
BOOTSEL[1:0]
CLKSEL
Signal
SSIRXFR
SSITXFR
SSI2
System
Configuration
Boot ROM
select
LED Flasher
System
Configuration
System
Configuration
PCMSYNC
CODEC
Block
EP7309
p/u
7
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