EP9302-CQZ Cirrus Logic Inc, EP9302-CQZ Datasheet - Page 121

• 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
4.1.2.3 Flowchart
Figure 4-1
8. If it is not a Serial Download, attempt to read from SPI Serial Flash (see
9. Attempt to read the “CRUS” or “SURC” HeaderID in ASCII in FLASH memory at FLASH
10.Attempt to read the “CRUS” or “SURC” HeaderID in ASCII in FLASH memory at FLASH
11.Attempt to read the “CRUS” or “SURC” HeaderID in ASCII in memory at 0xC000_0000
12.Attempt to read the “CRUS” or “SURC” HeaderID in ASCII in memory at 0xC000_1000
13.If “CRUS” or “SURC” HeaderID is not found, copy dummy vectors into low SDRAM, and
then follow Steps A, B, C, and D.
Base + 0x0000, and verify the HeaderID. This is read in for each FLASH Chip select
(see
Base + 0x1000, and verify the HeaderID. This is read in for each FLASH Chip select
(see
and 0xF000_0000, and verify the HeaderID. This is read in for SDRAM or SyncFLASH
boot (see
and 0xF000_1000, and verify the HeaderID. This is read in for SDRAM or SyncFLASH
boot (see
then follow Step A.
A. Check if the first 4 bytes from the Serial Flash are equal to “CRUS” or to “SURC” in
B. Read the next 2048 (decimal count) bytes into the Internal Boot Buffer
C. Turn on Green LED
D. Jump to the start of the Internal Boot Buffer
A. Turn on Green LED
B. Jump to the start of FLASH memory plus four bytes
A. Turn on Green LED
B. Jump to the start of FLASH memory
A. Turn on Green LED
B. Jump to memory location 0xC000_0004 or 0xF000_0004
A. Turn on Green LED
B. Jump to memory location 0xC000_0000 or 0xF000_0000
A. Flash Green LED
ASCII, verifying the HeaderID
Figure
Figure
provides a flow chart for operation of the Boot ROM software.
Figure
Figure
4-1), and then follow Steps A and B.
4-1), and then follow Steps A and B.
4-1), and then follow Steps A and B.
4-1), and then follow Steps A and B.
Copyright 2007 Cirrus Logic
EP93xx User’s Guide
Figure
4-1), and
Boot ROM
4-3
4