EP7309-CR Cirrus Logic Inc, EP7309-CR Datasheet - Page 4

• Manufacturer Part Number: EP7309-CR
• Description: 32-Bit Microcontroller IC
• Manufacturer: Cirrus Logic Inc

Specifications of EP7309-CR

• Controller Family/series: (ARM7)
• Core Size: 32 Bit
• No. Of Timers 8/12/16/32 Bits: 0 / 0 / 2 / 0
• Interface: SSI, UART
• Embedded Interface Type: SSI, UART
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

EP7309
High-Performance, Low-Power System on Chip
Universal Asynchronous
Receiver/Transmitters (UARTs)
The EP7309 includes two 16550-type UARTs for RS-232
serial communications, both of which have two 16-byte
FIFOs for receiving and transmitting data. The UARTs
support bit rates up to 115.2 kbps. An IrDA SIR protocol
encoder/decoder can be optionally switched into the
RX/TX signals to/from UART 1 to enable these signals
to drive an infrared communication interface directly.
Digital Audio Interface (DAI)
The EP7309 integrates an interface to enable a direct
connection to many low cost, low power, high quality
audio converters. In particular, the DAI can directly
interface with the Crystal
audio DACs and the Crystal
Some of these devices feature digital bass and treble
boost, digital volume control and compressor-limiter
functions.
4
TXD[1]
RXD[1]
CTS
DCD
DSR
TXD[2]
RXD[2]
LEDDRV
PHDIN
SCLK
SDOUT
SDIN
LRCK
MCLKIN
MCLKOUT
Table C. Universal Asynchronous Receiver/Transmitters Pin
Note:
Pin Mnemonic
Pin Mnemonic
See
multiplexes.
Table D. DAI Interface Pin Assignments
Table Q on page 7
Assignments
I/O
O
O
O
I
I
I
I
I
I
‚
I/O
O
O
O
O
for information on pin
CS43L41/42/43 low-power
‚
I
I
CS53L32 low-power ADC.
UART 1 transmit
UART 1 receive
UART 1 clear to send
UART 1 data carrier detect
UART 1 data set ready
UART 2 transmit
UART 2 receive
Infrared LED drive output
Photo diode input
Serial bit clock
Serial data out
Serial data in
Sample clock
Master clock input
Master clock output

Copyright 2001 Cirrus Logic (All Rights Reserved)
Pin Description
Pin Description
CODEC Interface
The EP7309 includes an interface to telephony-type
CODECs for easy integration into voice-over-IP and
other voice communications systems. The CODEC
interface is multiplexed to the same pins as the DAI and
SSI2.
SSI2 Interface
An additional SPI/Microwire1-compatible interface is
available
communications. The SSI2 unit shares the same pins as
the DAI and CODEC interfaces through a multiplexer.
• Synchronous clock speeds of up to 512 kHz
• Separate 16 entry TX and RX half-word wide FIFOs
• Half empty/full interrupts for FIFOs
• Separate RX and TX frame sync signals for
PCMCLK
PCMOUT
PCMIN
PCMSYNC
SSICLK
SSITXDA
SSIRXDA
SSITXFR
SSIRXFR
Note:
asymmetric traffic
Note:
Pin Mnemonic
Pin Mnemonic
See
multiplexes.
See
multiplexes.
Table E. CODEC Interface Pin Assignments
Table F. SSI2 Interface Pin Assignments
for
Table Q on page 7
Table Q on page 7
both
I/O
master
O
O
O
I
I/O
I/O
I/O
I/O
O
I
for information on pin
for information on pin
Serial bit clock
Serial data out
Serial data in
Frame sync
Serial bit clock
Serial data out
Serial data in
Transmit frame sync
Receive frame sync
and
Pin Description
Pin Description
slave
DS507PP1
mode