EP9315-CB Cirrus Logic Inc, EP9315-CB Datasheet - Page 10

• Manufacturer Part Number: EP9315-CB
• Description: IC ARM920T MCU 200MHZ 352-PBGA
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9315-CB

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, EIDE, Ethernet, I²C, IrDA, Keypad/Touchscreen, PCMCIA, SPI, UART/USART, USB
• Peripherals: AC'97, DMA, I&sup2:S, LCD, LED, MaverickKey, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Data Converters: A/D 8x12b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 352-BGA
• Processor Series: EP93xx
• Core: ARM920T
• Data Bus Width: 32 bit
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: EDB9315A-Z
• For Use With: 598-1144 - KIT DEVELOPMENT EP9315 ARM9
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: No
• Other names: 598-1261

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
±
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 µs to 73.3 hours.
One 40-bit debug timer, plus 6-bit prescale counter, has a
range of 1.0 µs 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-
10
RTCXTALI
RTCXTALO
XTALI
XTALO
VDD_PLL
GND_PLL
1.24 sec/month.
Note:
Pin Mnemonic
Pin Mnemonic
Table L. Real-Time Clock with Pin Assignments
Table M. PLL and Clocking Pin Assignments
A real time clock must be connected to RTCXTALI or
the EP9315 device will not boot.
Real-Time Clock Oscillator Input
Real-Time Clock Oscillator Output
Main Oscillator Input
Main Oscillator Output
Main Oscillator Power
Main Oscillator Ground
Pin Name - Description
Pin Name - Description
©
Copyright 2005 Cirrus Logic (All Rights Reserved)
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.
•
•
•
•
•
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:
6 pins may alternatively be used as inputs only:
2 pins may alternatively be used as outputs only:
INT[3:0]
GRLED
REDLED
Pin Mnemonic
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
Pin Mnemonic
• Key Matrix ROW[7:0], COL[7:0]
• Ethernet MDIO
• Both LED Outputs
• Two-wire Clock and Data
• SLA [1:0]
• CTSn, DSRn / DCDn
• 4 Interrupt Lines
• RTSn
• ARSTn
Table N. External Interrupt Pin Assignment
Table O. Dual LED Pin Assignments
Green LED
Red LED
Description
Pin Name -
External Interrupt 3-0
Pin Name - Description
General Purpose I/O
General Purpose I/O
Alternative Usage
DS638PP4