EP9302-CQZ Cirrus Logic Inc, EP9302-CQZ Datasheet - Page 500

• 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

13
13-4
SDRAM, SyncROM, and SyncFLASH Controller
EP93xx User’s Guide
SFLASH
13.4 SDRAM Initialization
2K Page
alike, 16
alike, 32
Device
SDRAM
SDRAM
512, 32
bit data
bit data
bit data
SROM
SROM
SROM
Sync
Mode,
16 bit
32 bit
32 bit
data
data
data
look
look
the synchronous memory map. Refer to
SROMLL=1 and SROMLL=0. bit can be used to reduce the number of memory segments
and it is
Following power on, each SDRAM device must be initialized before it can be used.
4
compatibility).
shows a general initialization sequence (refer to the SDRAM device’s data sheet to ensure
Address
Muxing
Row and
Row and
Row and
Row and
Row and
Row and
Column
Column
Column
Column
Column
Column
Pins
Bank
Bank
Bank
Bank
Bank
Bank
Step
1
Wait 100 μ s
A27
A27
A27
A27
A27
A27
A27
A27
A22
A22
A23
A23
AD
Address
15
Bank
Pins
1. “AP” means Auto Precharge -- see SDRAM device’s data sheet
A26
A26
A26
A26
A26
A26
A26
A26
A21
A21
A22
A22
AD
14
Table 13-3. Synchronous Memory Address Decoding
Table 13-4. General SDRAM Initialization Sequence
A22
A23
A24
A22
A27
A27
AD
13
-
-
-
-
-
-
Action
A21
A22
A23
A21
A26
A26
AD
12
-
-
-
-
-
-
Copyright 2007 Cirrus Logic
A20
A21
A22
A20
A20
A21
AD
11
-
-
-
-
-
-
A19
AP
A20
AP
A21
AP
A19
A19
AP
A20
AP
AD
10
-
1
1
1
1
1
Table 13-11
A18
A25
A19
A25
A20
A25
A18
A25
A18
A25
A19
A25
AD
9
A17
A24
A18
A24
A19
A10
A17
A24
A17
A24
A18
A24
AD
8
Address Pins
To allow SDRAM power and clocks to
stabilize
to compare the memory space with
A16
A17
A18
A16
A23
A16
A17
AD
A8
A9
A9
A8
A9
7
A15
A16
A17
A15
A15
A16
AD
A7
A8
A8
A8
A7
A8
6
Reason
A14
A15
A16
A14
A14
A15
AD
A6
A7
A7
A7
A6
A7
5
A13
A14
A15
A13
A13
A14
AD
A5
A6
A6
A6
A5
A6
4
A12
A13
A14
A12
A12
A13
AD
A4
A5
A5
A5
A4
A5
3
A12
A13
A12
A11
A11
A11
AD
A3
A4
A4
A4
A3
A4
2
DS785UM1
Table 13-
A10
A12
A10
A10
AD
A11
A11
A2
A3
A3
A3
A2
A3
1
A10
A10
AD
A11
A9
A1
A2
A2
A9
A2
A9
A1
A2
0