EP9301-CQ Cirrus Logic Inc, EP9301-CQ Datasheet - Page 611

• Manufacturer Part Number: EP9301-CQ
• Description: IC ARM920T MCU 166MHZ 208-LQFP
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9301-CQ

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 166MHz
• 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
• Program Memory Type: ROMless
• 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
• Package / Case: 208-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Other names: 598-1248

DS785UM1
17.5.1.2 4.0 Mbps FIR Frame Format
Receive data sample counter frequency = 6x pulse width, each time-slot sampled on third clock.
When the 4.0 Mbps transmission rate is used, the high-speed serial/parallel (FIR) interface
within the FIR is used along with the 4PPM bit encoding. The high-speed frame format shown
in
flags and CRC are twice as long and instead of one start flag, a preamble and start flag of
differing length are used.
Figure
Preamble
symbols
64
17-4, is similar to the SDLC format with several minor modifications: the start/stop
Start Flag
Start Flag
Preamble
symbols
8
Figure 17-4. IrDA (4.0 Mbps) Transmission Format
Figure 17-3. 4PPM Modulation Example
Address
(8 bits)
4 DDs
Copyright 2007 Cirrus Logic
|0000|1100|0000|1100|0110|0000|0110|0000|
|0000|1100|0000|1100|0000|0110|0000|0110|
|1000|0000|1010|1000|... repeated 16 times
(optional)
Control
(8 bits)
4 DDs
8180 DDs max
(2045 bytes)
Data
(32 bits)
CRC-32
16 DDs
8 symbols
Stop Flag
Stop Flag
EP93xx User’s Guide
17-15
IrDA
17