EP9312-CB Cirrus Logic Inc, EP9312-CB Datasheet - Page 479

• Manufacturer Part Number: EP9312-CB
• Description: System-on-Chip Processor
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9312-CB

• Peak Reflow Compatible (260 C): No
• A/d Converter: 12 Bits
• Leaded Process Compatible: No
• No. Of I/o Pins: 65
• Package / Case: 352-BGA
• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, EIDE, Ethernet, I²C, IrDA, Keypad/Touchscreen, 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
• Processor Series: EP93xx
• Core: ARM920T
• Data Bus Width: 32 bit
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: No
• Other names: 598-1257

DS785UM1
12.1 Introduction
The Static Memory Controller (SMC) operates in little endian mode, and it supports up to six
independently configurable memory spaces or banks. Supported memory types are:
Each memory bank can be configured to support:
Note: In the EP9301 and 9302 processors, the common address/data bus is 16-bits wide
Note: In the EP9307, EP9312, and EP9315 processors, the common address/data bus is
Note: PCMCIA (PC Card) is supported in the EP9315 processor only.
Note: There are only two external DMA interfaces total on the EP93xx device to control data flow
• SRAM
• ROM
• NOR FLASH
• External Peripheral that has an SRAM-type interface
• Memory devices that have either 8-, 16-, or 32-bit data paths. For example:
• One external peripheral that uses the external DMA handshake signals, DREQ0/1,
• Non-burst read and write accesses
• Page Mode (burst-of-four) read and write accesses
• PCMCIA interfacing (EP9315 processor only)
DACK0/1, and optionally DEOT0/1. These signals are multiplexed with EPGIO[12:7]
pins.
• Two 16-bit devices can be used in parallel to make a 32-bit data path
• Two 8-bit devices can be used in parallel to make a 16-bit data path
• One 16-bit device can be used standalone to make an 16-bit data path
• One 8-bit device can be used standalone to make an 8-bit data path
and the Static Memory Controller (SMC) supports 8-bit and 16-bit devices.
programmable to either 16-bits or 32-bits wide, and the SMC supports 8-bit, 16-bit,
and 32-bit devices.
Copyright 2007 Cirrus Logic
12Static Memory Controller
Chapter 12
12-1
12