ep9307 Cirrus Logic, Inc., ep9307 Datasheet - Page 11

• Manufacturer Part Number: ep9307
• Description: Arm9 Soc With Ethernet, Usb, Display, And Touchscreen
• Manufacturer: Cirrus Logic, Inc.

Reset and Power Management
The chip may be reset through the PRSTn pin or through
the open drain common reset pin, RSTOn.
Clocks are managed on a peripheral-by-peripheral basis
and may be turned off to conserve power.
The processor clock is dynamically adjustable from 0 to
200 MHz (184 MHz for industrial conditions).
Hardware Debug Interface
The JTAG interface allows use of ARM’s Multi-ICE or
other in-circuit emulators.
12-Channel DMA Controller
The DMA module contains 12 separate DMA channels.
These may be used for peripheral-to-memory or
memory-to-peripheral
dedicated to memory-to-memory transfers. Each DMA
channel is connected to the 16-bit DMA request bus.
The request bus is a collection of requests, Serial Audio
and UARTs.
independently or dedicated to any request signal. For
each DMA channel, source and destination addressing
can be independently programmed to increment,
DS667PP4
PRSTn
RSTOn
EGPIO[15]
EGPIO[13:0]
FGPIO[7]
FGPIO[5]
FGPIO[0]
TCK
TDI
TDO
TMS
TRSTn
Pin Mnemonic
Pin Mnemonic
Pin Mnemonic
Table P. Reset and Power Management Pin Assignments
Table O. General Purpose Input/Output Pin Assignment
Table Q. Hardware Debug Interface
Each DMA channel
Expanded General Purpose Input / Output
Pins with Interrupts
Expanded General Purpose Input / Output
Pins with Interrupts
Power On Reset
User Reset In/Out – Open Drain –
Preserves Real Time Clock value
JTAG Clock
JTAG Data In
JTAG Data Out
JTAG Test Mode Select
JTAG Port Reset
access.
Pin Name - Description
Pin Name - Description
Pin Name - Description
©
Two
Copyright 2005 Cirrus Logic (All Rights Reserved)
of
can be used
these
are
decrement, or stay at the same value. All DMA
addresses are physical, not virtual addresses.
ARM9 SOC with Ethernet, USB, Display and Touchscreen
EP9307
11