EP7309-CR Cirrus Logic Inc, EP7309-CR Datasheet - Page 7

• 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

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
Crystal
feature digital bass and treble boost, digital volume control and
compressor-limiter functions.
CODEC Interface
The EP7309 includes an interface to telephony-type CODECs
for easy integration into voice-over-IP and other voice
DS507F1
TXD[1]
RXD[1]
CTS
DCD
DSR
TXD[2]
RXD[2]
LEDDRV
PHDIN
SCLK
SDOUT
SDIN
LRCK
MCLKIN
MCLKOUT
Table 3. Universal Asynchronous Receiver/Transmitters Pin
Note:
Pin Mnemonic
Pin Mnemonic
‚
CS53L32 low-power ADC. Some of these devices
See
multiplexes.
‚
CS43L41/42/43 low-power audio DACs and the
Table 4. DAI Interface Pin Assignments
Table 17 on page 10
Assignments
I/O
O
O
O
I
I
I
I
I
I
I/O
O
O
O
O
I
I
for information on pin
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
Pin Description
Pin Description
©
Copyright Cirrus Logic, Inc. 2005
(All Rights Reserved)
communications
multiplexed to the same pins as the DAI and SSI2.
SSI2 Interface
An
available for both master and slave mode communications. The
SSI2 unit shares the same pins as the DAI and CODEC
interfaces through a multiplexer.
•
•
•
•
PCMCLK
PCMOUT
PCMIN
PCMSYNC
SSICLK
SSITXDA
SSIRXDA
SSITXFR
SSIRXFR
Note:
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 asymmetric
traffic
Note:
Pin Mnemonic
Pin Mnemonic
additional
See
multiplexes.
See
multiplexes.
Table 5. CODEC Interface Pin Assignments
High-Performance, Low-Power System on Chip
Table 6. SSI2 Interface Pin Assignments
Table 17 on page 10
Table 17 on page 10
SPI/Microwire1-compatible
systems.
I/O
O
O
O
I
I/O
I/O
I/O
I/O
The
O
I
for information on pin
for information on pin
Serial data out
Serial bit clock
Serial data in
Frame sync
CODEC
Serial data out
Serial bit clock
Serial data in
Transmit frame sync
Receive frame sync
Pin Description
Pin Description
interface
interface
EP7309
is
is
7