User Manual

DS506F2 Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved) 11
EP7311
High-Performance, Low-Power System on Chip
Pin Multiplexing
The following table shows the pin multiplexing of the MCP,
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
MCP is controlled by the MCPSEL bit in SYSCON3 (see the
EP73xx User’s Manual for more information).
The following table shows the pins that have been multiplexed
in the EP7311.
Pin
Mnemonic
I/O MCP SSI2 CODEC
SSICLK I/O SIBCLK SSICLK PCMCLK
SSITXDA O SIBDOUT SSITXDA PCMOUT
SSIRXDA I SIBDIN SSIRXDA PCMIN
SSITXFR I/O SIBSYNC SSITXFR PCMSYNC
SSIRXFR I p/u SSIRXFR p/u
BUZ O
Table R. MCP/SSI2/CODEC Pin Multiplexing
Signal Block Signal Block
nMOE Static Memory nSDCAS SDRAM
nMWE Static Memory nSDWE SDRAM
WRITE Static Memory nSDRAS SDRAM
A[27:15] Static Memory DRA[0:12] SDRAM
A[14:13] Static Memory DRA[13:14] SDRAM
PD[7:6] GPIO SDQM[1:0] SDRAM
RUN
System
Configuration
CLKEN
System
Configuration
nMEDCHG
Interrupt
Controller
nBROM
Boot ROM
select
PD[0] GPIO LEDFLSH LED Flasher
PE[1:0] GPIO BOOTSEL[1:0]
System
Configuration
PE[2] GPIO CLKSEL
System
Configuration
Table S. Pin Multiplexing