Cirrus-logic EP93xx Manual do Utilizador Página 34

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1-6 DS785UM1
Copyright 2007 Cirrus Logic
Introduction
EP93xx User’s Guide
1
1
1
- Block Copy
- Block Fill
Touch Screen interface
- 5-ADC in EP9301 and 9302 only
- 8-Wire Touch Screen/ADC in EP9307, 9312, and 9315 only
SPI port
AC ‘97 interface
•I
2
S interface with up to 6 channels
8x8 Matrix keypad scanner (in EP9307, EP9312, and EP9315 only)
PCMCIA Interface supporting 8-bit or 16-bit PCMCIA (PC Card) devices in EP9315 only
External Memory Options
16-bit SDRAM interface (up to 4 banks) in EP9301 and 9302 only
32-bit SDRAM interface (up to 4 banks) in EP9307, 9312, and 9315 only
16/8-bit SRAM/Flash/ROM interface in EP9301 and 9302 only
32/16/8-bit SRAM/Flash/ROM interface in EP9307, 9312, and 9315 only
Serial Flash interface
Internal Peripherals
Real-Time clock with software trim
12 DMA channels for data transfer to maximize system performance
Boot ROM
Dual PLLs
Watchdog timer
Two general purpose 16-bit timers
General purpose 32-bit timer
40-bit debug timer
Standard General-Purpose I/Os (GPIOs), no interrupts:
18 in EP9301 and 9302 only
30 in EP9307 only
31 in EP9312 and 9315 only
Enhanced General-Purpose I/Os (EGPIOs) plus Port F GPIOs can generate interrupts:
19 in EP9301, 9302 only
18 in EP9307 only
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