EP9302-CQZ Cirrus Logic Inc, EP9302-CQZ Datasheet - Page 523

• Manufacturer Part Number: EP9302-CQZ
• Description: IC ARM9 SOC PROCESSOR 208LQFP
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9302-CQZ

• Program Memory Type: ROMless
• Package / Case: 208-LQFP
• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, SPI, UART/USART, USB
• Peripherals: AC'97, DMA, I&sup2:S, LED, MaverickKey, POR, PWM, WDT
• Number Of I /o: 19
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Data Converters: A/D 5x12b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Processor Series: EP93xx
• Core: ARM920T
• Data Bus Width: 32 bit
• Data Ram Size: 16 bit
• Interface Type: USB, USART, SPI
• Maximum Clock Frequency: 200 MHz
• Number Of Programmable I/os: 37
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: EDB9302A-Z
• Controller Family/series: (ARM9)
• No. Of I/o's: 19
• Ram Memory Size: 16MB
• Cpu Speed: 200MHz
• No. Of Timers: 4
• Embedded Interface Type: AC97, I2S, SPI, UART, USB
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1132 - KIT DEVELOPMENT EP9302 ARM9
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1137

DS785UM1
14.1 Introduction
14.2 UART Overview
UART1 is the collection of a UART block along with a block to support a 9 pin modem
interface and a block to support synchronous and asynchronous HDLC protocol support for
full duplex transmit and receive. The following sections address each of these blocks.
Transmit and Receive data transfers through UART1 can either be managed by the DMA,
interrupt driven, or CPU polled operations. A loopback control bit is available to enable
system testing by routing the transmit data stream into the receiver.
The UART performs:
The CPU reads and writes data and control/status information via the AMBA APB interface.
The transmit and receive paths are buffered with internal FIFO memories allowing up to
16 bytes to be stored independently in both transmit and receive modes.
The UART:
The UART operation and baud rate values are controlled by the line control register
(UART1LinCtrl).
The UART can generate:
If a framing, parity or break error occurs during reception, the appropriate error bit is set, and
is stored in the FIFO. If an overrun condition occurs, the overrun register bit is set
immediately and FIFO data is prevented from being overwritten.
• Serial-to-parallel conversion on data received from a peripheral device.
• Parallel-to-serial conversion on data transmitted to the peripheral device.
• Includes a programmable baud rate generator which generates a common transmit and
• Offers similar functionality to the industry-standard 16C550 UART device.
• Supports baud rates of up to 115.2 Kbps and beyond, subject to UARTCLK reference
• Four individually-maskable interrupts from the receive, transmit and modem status logic
• A single combined interrupt so that the output is asserted if any of the individual
receive internal clock from the UART internal reference clock input, UARTCLK.
clock frequency.
blocks.
interrupts are asserted and unmasked.
14UART1 With HDLC and Modem Control Signals
Copyright 2007 Cirrus Logic
Chapter 14
14-1
14