参数资料
型号: EP7309-CV
厂商: Cirrus Logic Inc
文件页数: 40/42页
文件大小: 0K
描述: IC ARM720T MCU 74MHZ 208-LQFP
标准包装: 36
系列: EP7
核心处理器: ARM7
芯体尺寸: 32-位
速度: 74MHz
连通性: 编解码器,DAI,EBI/EMI,IrDA,键盘,SPI/Microwire1,UART/USART
外围设备: LCD,LED,MaverickKey,POR,PWM
输入/输出数: 27
程序存储器类型: ROMless
RAM 容量: 56K x 8
电压 - 电源 (Vcc/Vdd): 2.3 V ~ 2.7 V
振荡器型: 外部
工作温度: 0°C ~ 70°C
封装/外壳: 208-LQFP
包装: 托盘
其它名称: 598-1213
DS507F2
Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved)
7
EP7309
High-Performance, Low-Power System on Chip
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 CS43L41/42/43 low-power audio DACs and the
Crystal CS53L32 low-power ADC. Some of these devices
feature digital bass and treble boost, digital volume control and
compressor-limiter functions.
Note:
See Table 17 on page 10 for information on pin
multiplexes.
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.
Note:
See Table 17 on page 10 for information on pin
multiplexes.
SSI2 Interface
An
additional
SPI/Microwire1-compatible
interface
is
available for both master and slave mode 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 asymmetric
traffic
Note:
See Table 17 on page 10 for information on pin
multiplexes.
Pin Mnemonic
I/O
Pin Description
TXD[1]
O
UART 1 transmit
RXD[1]
I
UART 1 receive
CTS
I
UART 1 clear to send
DCD
I
UART 1 data carrier detect
DSR
I
UART 1 data set ready
TXD[2]
O
UART 2 transmit
RXD[2]
I
UART 2 receive
LEDDRV
O
Infrared LED drive output
PHDIN
I
Photo diode input
Table 3. Universal Asynchronous Receiver/Transmitters Pin
Assignments
Pin Mnemonic
I/O
Pin Description
SCLK
O
Serial bit clock
SDOUT
O
Serial data out
SDIN
I
Serial data in
LRCK
O
Sample clock
MCLKIN
I
Master clock input
MCLKOUT
O
Master clock output
Table 4. DAI Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
PCMCLK
O
Serial bit clock
PCMOUT
O
Serial data out
PCMIN
I
Serial data in
PCMSYNC
O
Frame sync
Table 5. CODEC Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
SSICLK
I/O
Serial bit clock
SSITXDA
O
Serial data out
SSIRXDA
I
Serial data in
SSITXFR
I/O
Transmit frame sync
SSIRXFR
I/O
Receive frame sync
Table 6. SSI2 Interface Pin Assignments
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