EP9312-CB Cirrus Logic Inc, EP9312-CB Datasheet - Page 136

• 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

5
5-10
System Controller
EP93xx User’s Guide
5.1.6.2 System Power States
HCLK to the USB Hosts can be gated off as well to further save power. The USH_EN bit in
the
The EP93xx has three power states:
Figure 5-4
• Run mode: Normal operation mode.
• Halt: ARM Core stops executing instructions.
• Standby: Power is on, but only SDRAM self-refresh and the RTC run.
"PwrCnt"
illustrates the transitions among power states.
register serves the purpose.
Peripheral
Watchdog
KEYPAD
UART1
UART2
UART3
PWM
GPIO
IRDA
SEC
TSC
AAC
SSP
RTC
I
2
S
Table 5-4. Peripherals with PCLK Gating
Copyright 2007 Cirrus Logic
on with Enable or
Peripheral/PCLK
Register Access
x
x
x
x
x
x
x
x
x
-
-
-
-
-
Register Access
PCLK on with
Only
x
x
x
-
-
-
-
-
-
-
-
-
-
-
PCLK Continuous
x
x
-
-
-
-
-
-
-
-
-
-
-
-
DS785UM1