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| 型号： | EP9315-EBZ |
| 厂商： | Cirrus Logic, Inc. |
| 英文描述： | Enhanced Universal Platform System-on-Chip Processor |
| 中文描述： | 增强型通用平台上系统芯片处理器 |
| 文件页数： | 10/64页 |
| 文件大小： | 1031K |
| 代理商： | EP9315-EBZ |
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10
Copyright 2005 Cirrus Logic (All Rights Reserved)
DS638PP4
EP9315
Enhanced Universal Platform SOC Processor
Real-Time Clock with Software Trim
The software trim feature on the real time clock (RTC)
provides software controlled digital compensation of the
32.768 kHz input clock. This compensation is accurate to
±
1.24 sec/month.
Note:
A real time clock must be connected to RTCXTALI or
the EP9315 device will not boot.
PLL and Clocking
The processor and the peripheral clocks operate from a
single 14.7456 MHz crystal.
The real time clock operates from a 32.768 kHz external
oscillator.
Timers
The Watchdog Timer insures proper operation by
requiring periodic attention to prevent a reset-on-time-
out.
Two 16-bit timers operate as free running down-counters
or as periodic timers for fixed interval interrupts and have
a range of 0.03 ms to 4.27 seconds.
One 32-bit timer, plus a 6-bit prescale counter, has a
range of 0.03
μ
s to 73.3 hours.
One 40-bit debug timer, plus 6-bit prescale counter, has a
range of 1.0
μ
s to 12.7 days.
Interrupt Controller
The interrupt controller allows up to 64 interrupts to
generate an Interrupt Request (IRQ) or Fast Interrupt
Request (FIQ) signal to the processor core. Thirty-two
hardware priority assignments are provided for assisting
IRQ vectoring, and two levels are provided for FIQ
vectoring. This allows time critical interrupts to be
processed in the shortest time possible. Internal
interrupts may be programmed as active-high or active-
low, level-sensitive inputs. GPIO may be programmed as
active-high level-sensitive, active-low level-sensitive,
rising-edge-triggered, falling-edge-triggered, or combined
rising/falling-edge-triggered.
Supports 64 interrupts from a variety of sources (such
as UARTs, GPIO, and key matrix)
Routes interrupt sources to either the ARM920T’s
IRQ or FIQ (Fast IRQ) inputs
Four dedicated off-chip interrupt lines INT[3:0]
operate as active-high, level-sensitive interrupts
Any of the 16 GPIO lines maybe configured to
generate interrupts
Software supported priority mask for all FIQs and
IRQs
Dual LED Drivers
Two pins are assigned specifically to drive external
LEDs.
General Purpose Input/Output (GPIO)
The 16 EGPIO pins may each be configured individually
as an output, an input, or an interrupt input. Port F may
be configured as GPIO. Each Port F pin may be
configured individually as an output, input or an interrupt
input.
There are 23 pins that may be used as alternate inputs or
outputs, but do not support interrupts. These pins are:
Key Matrix ROW[7:0], COL[7:0]
Ethernet MDIO
Both LED Outputs
Two-wire Clock and Data
SLA [1:0]
6 pins may alternatively be used as inputs only:
CTSn, DSRn / DCDn
4 Interrupt Lines
2 pins may alternatively be used as outputs only:
RTSn
ARSTn
Table L. Real-Time Clock with Pin Assignments
Pin Mnemonic
Pin Name - Description
RTCXTALI
Real-Time Clock Oscillator Input
RTCXTALO
Real-Time Clock Oscillator Output
Table M. PLL and Clocking Pin Assignments
Pin Mnemonic
Pin Name - Description
XTALI
Main Oscillator Input
XTALO
Main Oscillator Output
VDD_PLL
Main Oscillator Power
GND_PLL
Main Oscillator Ground
Table N. External Interrupt Pin Assignment
Pin Mnemonic
Pin Name - Description
INT[3:0]
External Interrupt 3-0
Table O. Dual LED Pin Assignments
Pin Mnemonic
Pin Name -
Description
Alternative Usage
GRLED
Green LED
General Purpose I/O
REDLED
Red LED
General Purpose I/O
相关PDF资料 |
PDF描述 |
|---|---|
| EP9315-IB | Metal Strip Resistor; Series:WSL; Resistance:0.003ohm; Resistance Tolerance:+/- 1 %; Power Rating:0.25W; Temperature Coefficient:+/-150 ppm; Package/Case:1206; Terminal Type:PCB Surface Mount; Leaded Process Compatible:Yes |
| EP9315-IBZ | Enhanced Universal Platform System-on-Chip Processor |
| EP9315 | Enhanced Universal Platform System-on-Chip Processor |
| EP9315-CB | Enhanced Universal Platform System-on-Chip Processor |
| EP9315-CBZ | Enhanced Universal Platform System-on-Chip Processor |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EP9315IB | 制造商:Cirrus Logic 功能描述: |
| EP9315-IB | 功能描述:微处理器 - MPU IC Universal Platfrm ARM9 SOC Prcessor RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| EP9315-IBZ | 功能描述:微处理器 - MPU IC Universal Platfrm ARM9 SOC Prcessor RoHS:否 制造商:Atmel 处理器系列:SAMA5D31 核心:ARM Cortex A5 数据总线宽度:32 bit 最大时钟频率:536 MHz 程序存储器大小:32 KB 数据 RAM 大小:128 KB 接口类型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作电源电压:1.8 V to 3.3 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:FBGA-324 |
| EP9316 | 制造商:PCA 制造商全称:PCA ELECTRONICS INC. 功能描述:14 Pin DIP 5 Tap Low-Profile TTL Compatible Active Delay Lines |
| EP9317 | 制造商:PCA 制造商全称:PCA ELECTRONICS INC. 功能描述:14 Pin DIP 5 Tap Low-Profile TTL Compatible Active Delay Lines |
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