EP7312-IV-90 Cirrus Logic Inc, EP7312-IV-90 Datasheet - Page 11

• Manufacturer Part Number: EP7312-IV-90
• Description: IC ARM720T MCU 90MHZ 208-LQFP
• Manufacturer: Cirrus Logic Inc
• Series: EP7r

Specifications of EP7312-IV-90

• Core Processor: ARM7
• Core Size: 32-Bit
• Speed: 90MHz
• Connectivity: Codec, DAI, EBI/EMI, IrDA, Keypad, SPI/Microwire1, UART/USART
• Peripherals: LCD, LED, MaverickKey, PWM
• Number Of I /o: 27
• Program Memory Type: ROMless
• Ram Size: 56K x 8
• Voltage - Supply (vcc/vdd): 2.3 V ~ 2.7 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-LQFP
• For Use With: 598-1209 - KIT DEVELOPMENT EP73XX ARM7
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -
• Other names: 598-1246

Pin Multiplexing
Table 18
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).
DS508F1
SSICLK
SSITXDA
SSIRXDA
SSITXFR
SSIRXFR
BUZ
Mnemonic
Pin
shows the pin multiplexing of the DAI, SSI2 and the
Table 18. DAI/SSI2/CODEC Pin Multiplexing
I/O
I/O
I/O
O
O
I
I
MCLKOUT
MCLKIN
SDOUT
LRCK
SCLK
SDIN
DAI
SSITXDA
SSIRXDA
SSITXFR
SSIRXFR
SSICLK
SSI2
©
Copyright Cirrus Logic, Inc. 2005
PCMSYNC
PCMOUT
CODEC
PCMCLK
PCMIN
(All Rights Reserved)
p/u
Table 19
EP7312.
nMOE
nMWE
WRITE
A[27:15]
A[14:13]
PD[7:6]
RUN
nMEDCHG
PD[0]
PE[1:0]
PE[2]
Signal
shows the pins that have been multiplexed in the
High-Performance, Low-Power System on Chip
Static Memory
Static Memory
Static Memory
Static Memory
Static Memory
GPIO
System
Configuration
Interrupt
Controller
GPIO
GPIO
GPIO
Table 19. Pin Multiplexing
Block
nSDCAS
nSDWE
nSDRAS
DRA[0:12]
DRA[13:14]
SDQM[1:0]
CLKEN
nBROM
LEDFLSH
BOOTSEL[1:0]
CLKSEL
Signal
SDRAM
SDRAM
SDRAM
SDRAM
SDRAM
SDRAM
System
Configuration
Boot ROM
select
LED Flasher
System
Configuration
System
Configuration
Block
EP7312
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