EP7312 Datasheet, PDF (11/64 Pages) Cirrus Logic – HIGH-PERFORMANCE, LOW-POWER SYSTEM ON CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE

EP7312
High-Performance, Low-Power System on Chip
Pin Multiplexing
Table 18 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
EP7312 User’s Manual for more information).
Table 18. DAI/SSI2/CODEC Pin Multiplexing
Pin
Mnemonic
I/O
DAI
SSI2 CODEC
SSICLK
SSITXDA
SSIRXDA
SSITXFR
SSIRXFR
BUZ
I/O
SCLK
SSICLK PCMCLK
O
SDOUT SSITXDA PCMOUT
I
SDIN
SSIRXDA PCMIN
I/O
LRCK
SSITXFR PCMSYNC
I
MCLKIN SSIRXFR
p/u
O MCLKOUT
Table 19 shows the pins that have been multiplexed in
the EP7312.
Table 19. Pin Multiplexing
Signal
Block
Signal
Block
nMOE
nMWE
WRITE
A[27:15]
A[14:13]
PD[7:6]
RUN
nMEDCHG
PD[0]
PE[1:0]
PE[2]
Static Memory
Static Memory
Static Memory
Static Memory
Static Memory
GPIO
System
Configuration
Interrupt
Controller
GPIO
GPIO
GPIO
nSDCAS
SDRAM
nSDWE
SDRAM
nSDRAS
SDRAM
DRA[0:12]
SDRAM
DRA[13:14]
SDRAM
SDQM[1:0]
SDRAM
CLKEN
System
Configuration
nBROM
Boot ROM
select
LEDFLSH
LED Flasher
BOOTSEL[1:0]
System
Configuration
CLKSEL
System
Configuration
DS508PP5
©Copyright Cirrus Logic, Inc. 2003
(All Rights Reserved)
11