EP9312-CB Cirrus Logic Inc, EP9312-CB Datasheet - Page 791

• 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
28.1 Introduction
The General Purpose Input/Output (GPIO) is an Advanced Peripheral Bus (APB) slave
module. The GPIO block is the primary controller for the EGPIO, RDLED, GRLED, SLA[1:0],
EECLK, and EEDAT pins. It is a secondary controller for the ROW[7:0], COL[7:0], PCMCIA
and IDE control pins.
There are two types of GPIOs, standard and enhanced. The enhanced GPIO, called EGPIO,
have interrupt generation capability.
The GPIO block has eight ports, named Port A through Port H. Ports C, D, E, G, and H are
standard GPIO ports. Ports A, B, and F are enhanced GPIO ports.
Each GPIO port controls eight individual pins. Each port has an 8-bit data register and an 8-
bit data direction register. The EGPIO ports each have additional 8-bit registers for interrupt
configuration and status. The control of an individual pin is determined in a bit-slice fashion
across all registers for that port; only a single bit at a particular index from each register
affects or is affected by that pin.
Note: The EP9301 and EP9302 processors each have 18 standard GPIOs and 19 enhanced
Note: The EP9307 processor has 30 standard GPIOs and 18 enhanced GPIOs.
Note: The EP9312 processor has 31 standard GPIOs and 16 enhanced GPIOs.
Note: The EP9315 processor has 31 standard GPIOs and 24 enhanced GPIOs.
GPIOs.
Copyright 2007 Cirrus Logic
28GPIO Interface
Chapter 28
28-1
28