EP9312-CB Cirrus Logic Inc, EP9312-CB Datasheet - Page 714

• 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

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23-2
Synchronous Serial Port
EP93xx User’s Guide
23.5.1 Enabling SSP Operation
23.3 SSP Functionality
23.4 SSP Pin Multiplex
23.5 Configuring the SSP
The SSP includes a programmable bit rate clock divider and prescaler to generate the serial
output clock SCLKOUT from the input clock SSPCLK. Bit rates are supported to 2MHz and
beyond, subject to choice of frequency for SSPCLK. The maximum bit rate will usually be
determined by peripheral devices.
The SSP operating mode, frame format and size are programmed though the control
registers SSPCR0, SSPCR1.
Three individually maskable interrupt outputs, SSPTXINTR, SSPRXINTR and SSPRORINTR
are generated:
The SSP pins are multiplexed and may be used for the I
setting DeviceCfg.I2SonSSP.
Following reset, the SSP logic is disabled and must be configured when in this state. Control
registers SSPCR0 and SSPCR1 need to be programmed to configure the peripheral as a
master or slave operating under one of the following protocols:
The bit rate, derived from the external SSPCLK, requires the programming of the clock
prescale register SSPCPSR. The following procedure must be used to initialize the SSP
function:
You can either prime the transmit FIFO, by writing up to eight 16-bit values when the SSP is
disabled, or allow the transmit FIFO service request to interrupt the CPU. Once enabled,
transmission or reception of data begins on the transmit (SSPTXD) and receive (SSPRXD)
pins.
• SSPTXINTR requests servicing of the transmit buffer
• SSPRXINTR requests servicing of the receive buffer
• SSPRORINTR indicates an overrun condition in the receive FIFO.
• Motorola SPI
• Texas Instruments SSI
• National Semiconductor.
1. Set the enable bit (SSE) in register SSPCR1.
2. Write the other SSP configuration registers: SSPCR0 and SSPCPSR.
3. Clear the enable bit (SSE) in register SSPCR1.
4. Set the enable bit (SSE) in register SSPCR1.
Copyright 2007 Cirrus Logic
2
S controller instead of SSP by
DS785UM1