- 您现在的位置：买卖IC网 > PDF目录362743 > EP7312-IR-90 (CIRRUS LOGIC INC) HIGH-PERFORMANCE, LOW-POWER SYSTEM ON CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE PDF资料下载
参数资料
| 型号： | EP7312-IR-90 |
| 厂商： | CIRRUS LOGIC INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | HIGH-PERFORMANCE, LOW-POWER SYSTEM ON CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE |
| 中文描述： | 32-BIT, FLASH, 90 MHz, RISC MICROCONTROLLER, PBGA204 |
| 封装： | 13 X 13 MM, TFBGA-204 |
| 文件页数： | 7/64页 |
| 文件大小： | 1710K |
| 代理商： | EP7312-IR-90 |
第1页第2页第3页第4页第5页第6页当前第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页
DS508PP5
Copyright Cirrus Logic, Inc. 2003
(All Rights Reserved)
7
EP7312
High-Performance, Low-Power System on Chip
The second is the programmable 16- or 32-bit-wide
SDRAM interface that allows direct connection of up to
two banks of SDRAM, totaling 512 Mb. To assure the
lowest
possible
power
consumption,
supports self-refresh SDRAMs, which are placed in a
low-power state by the device when it enters the low-
power Standby State.
Table 3
shows the SDRAM
Interface pin assignments.
the
EP7312
Note:
1. Pins A[27:13] map to DRA[0:14] respectively.
(i.e. A[27}/DRA[0}, A[26}/DRA[1], etc.) This is to
balance the load for large memory systems.
2. Pins are multiplexed. See
Table 19 on page 11
for
more information.
Digital Audio Capability
The EP7312 uses its powerful 32-bit RISC processing
engine to implement audio decompression algorithms in
software. Thenatureof theon-board RISC processor, and
the availability
of efficient C-compilers and
softwaredevelopment tools, ensures that a widerangeof
audio decompression algorithms can easily be ported to
and run on theEP7312
other
Universal Asynchronous
Receiver/Transmitters (UARTs)
The EP7312 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.
Table 4
shows the UART pin assignments.
Digital Audio Interface (DAI)
The EP7312 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.
Table
5
shows
assignments.
the
DAI
Interface pin
Note:
See
Table 18 on page 11
for information on pin
multiplexes.
Table 3. SDRAM Interface Pin Assignments
Pin Mnemonic
I/O
Pin Description
SDCLK
O
SDRAM clock output
SDCKE
O
SDRAM clock enable output
nSDCS[1:0]
O
SDRAM chip select out
WRITE/nSDRAS
(Note 2)
O
SDRAM RAS signal output
nMOE/nSDCAS
(Note 2)
O
SDRAM CAS control signal
nMWE/nSDWE
(Note 2)
O
SDRAM write enable control
signal
A[27:15]/DRA[0:12]
(Note 1)
O
SDRAM address
A[14:13]/DRA[12:14]
O
SDRAM internal bank select
PD[7:6]/SDQM[1:0]
(Note 2)
I/O
SDRAM byte lane mask
SDQM[3:2]
O
SDRAM byte lane mask
D[31:0]
I/O
Data I/O
Table 4. Universal Asynchronous Receiver/Transmitters Pin
Assignments
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 5. DAI Interface 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
相关PDF资料 |
PDF描述 |
|---|---|
| EP9301 | Entry-level ARM9 System-on-chip Processor |
| EP9301-CQ | Entry-level ARM9 System-on-chip Processor |
| EP9301-CQZ | Entry-level ARM9 System-on-chip Processor |
| EP9301-EQ | Entry-level ARM9 System-on-chip Processor |
| EP9301-EQZ | Entry-level ARM9 System-on-chip Processor |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EP7312IR-90 | 制造商:Cirrus Logic 功能描述: |
| EP7312-IR-C | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE |
| EP7312-IV | 功能描述:IC ARM720T MCU 74MHZ 208-LQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:EP7 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C，LIN，SPI，UART/USART，USI 外围设备:欠压检测/复位，POR，PWM，温度传感器，WDT 输入/输出数:16 程序存储器容量:8KB（4K x 16） 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:带卷 (TR) |
| EP7312-IV-90 | 功能描述:IC ARM720T MCU 90MHZ 208-LQFP RoHS:否 类别:集成电路 (IC) >> 嵌入式 - 微控制器， 系列:EP7 标准包装:1,500 系列:AVR® ATtiny 核心处理器:AVR 芯体尺寸:8-位 速度:16MHz 连通性:I²C，LIN，SPI，UART/USART，USI 外围设备:欠压检测/复位，POR，PWM，温度传感器，WDT 输入/输出数:16 程序存储器容量:8KB（4K x 16） 程序存储器类型:闪存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 电压 - 电源 (Vcc/Vdd):2.7 V ~ 5.5 V 数据转换器:A/D 11x10b 振荡器型:内部 工作温度:-40°C ~ 125°C 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 包装:带卷 (TR) |
| EP7312-IV-C | 制造商:CIRRUS 制造商全称:Cirrus Logic 功能描述:HIGH-PERFORMANCE, LOW-POWER SYSTEM-ON-CHIP WITH SDRAM AND ENHANCED DIGITAL AUDIO INTERFACE |
发布紧急采购，3分钟左右您将得到回复。