EP9312-CB Cirrus Logic Inc, EP9312-CB Datasheet - Page 518

• 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

13
SDRAMDevCfg[3:0]
13-22
SDRAM, SyncROM, and SyncFLASH Controller
EP93xx User’s Guide
31
15
Address:
Default:
If booting from Asynchronous ROM, asynchronous memory bank zero (nCS0) is mapped to
address 0x0000_0000. If booting from SyncROM or SyncFLASH, Synchronous Memory
Domain 3 (nSDCS3) is re-mapped to address 0x0000_0000. This re-mapping of nSDCS3
does not change until after the boot process is completed and the processor is reset (not
power-on reset). At that time, nSDCS3 is mapped back to address 0xF000_0000, the
beginning address of Synchronous Memory Domain 3.
30
14
Note: 8-bit wide bus is not supported for SyncROM or SyncFLASH.
29
13
RSVD
28
12
RSVD
SDRAMDevCfg0: 0x8006_0010 - Read/Write
SDRAMDevCfg1: 0x8006_0014 - Read/Write
SDRAMDevCfg2: 0x8006_0018 - Read/Write
SDRAMDevCfg3: 0x8006_001C - Read/Write
0x0122_0008
27
11
26
10
25
9
Copyright 2007 Cirrus Logic
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24
Latched nCS[7:6] pins values:
Asynchronous (ASDO = ‘0’)
11 - 32-bit
10 - 32-bit
01 - 16-bit
00 - 8-bit
Synchronous (ASDO = ‘1’)
11 - 32-bit SROM (RAS=2, CAS=5, BL=4)
10 - 32-bit SFLASH (WBM=1, CAS=3, BL=4)
01 - 16-bit SROM (RAS=2, CAS=5, BL=8)
00 - 16-bit SFLASH (WBM=1, CAS=3, BL=4)
8
SFConfig
Addr
23
7
RSVD
PAGE
2K
22
6
SROMLL
21
5
RasToCas
SROM512
20
4
Count
WBM
Bank
19
3
External
Width
Bus
18
2
CasLat
DS785UM1
17
1
RSVD
16
0