EP9312-IB Cirrus Logic Inc, EP9312-IB Datasheet - Page 46

• Manufacturer Part Number: EP9312-IB
• Description: IC ARM920T MCU 200MHZ 352-PBGA
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9312-IB

• 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: -40°C ~ 85°C
• Package / Case: 352-BGA
• 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: 598-1259

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2-8
ARM920T Core and Advanced High-Speed Bus (AHB)
EP93xx User’s Guide
Before an AMBA-to-AHB transfer can commence, the bus master must be granted access to
the bus. This process is started by the master asserting a request signal to the Arbiter. The
Arbiter then indicates when the master will be granted use of the bus. A granted bus master
starts an AMBA-to-AHB transfer by driving the address and control signals. These signals
provide information on the address, direction and width of the transfer, as well as indicating
whether the transfer is part of a burst.
Two different forms of burst transfers are allowed:
• Incrementing bursts, which do not wrap at address boundaries
• Wrapping bursts, which wrap at particular address boundaries.
E
B
I
18 Bit Raster
Controller
PCMCIA
Ethernet
Memory/
SDRAM
LCD I/F
USB
Host
Static
IDE
AHB
Copyright 2007 Cirrus Logic
Figure 2-3. Main Data Paths
Boot ROM
ARM920T
Maverick
VIC2
VIC1
Crunch
DMA
UARTs
AHB/APB
Watchdog
Support
Timers
bridge
Test
RTC
AC97
APB
Clock & State
PLL1
8x8 Key Mtx
Touchscreen
Control
GPIOs
PWM
IrDA
SPI
I2S
PLL2
DS785UM1