AT91SAM9263 datasheet(39/48 Pages) ATMEL

39 / 48 page

6249BS–ATARM–18-Dec-06

AT91SAM9263 Preliminary

10.4

System Resource Multiplexing

10.4.1

LCD Controller

The LCD Controller can interface with several LCD panels. It supports 4 bits per pixel (bpp), 8

bpp or 16 bpp without limitation. Interfacing 24 bpp TFT panels prevents using the Ethernet

MAC. 16 bpp TFT panels are interfaced through peripheral B functions, as color data is output

on LCDD3 to LCDD7, LCDD11 to LCDD15 and LCDD19 to LCDD23. Intensity bit is output on

LCDD10. Using the peripheral B does not prevent using MAC lines. 16 bpp STN panels are

interfaced through peripheral A and color data is output on LCDD0 to LCDD15, thus MAC lines

can be used on peripheral B.

Mapping the LCD signals on peripheral A and peripheral B makes is possible to use 24 bpp TFT

panels in 24 bits (peripheral A) or 16 bits (peripheral B) by reprogramming the PIO controller and

thus without hardware modification.

10.4.2

ETM™

Using the ETM prevents the use of the EBI0 in 32-bit mode. Only 16-bit mode (EBI0_D0 to

EBI0_D15) is available, makes EBI0 unable to interface CompactFlash and NandFlash cards,

reduces EBI0’s address bus width which makes it unable to address memory ranges bigger than

0x7FFFFF and finally it makes impossible to use EBI0_NCS2.

10.4.3

EBI1

Using the following features prevents using EBI1 in 32-bit mode:

• the second slots of MCI0 and/or MCI1

• USART0

• DMA request 0 (DMARQ0)

10.4.4

SSC

Using SSC0 prevents using the AC97 Controller and Two-wire Interface.

Using SSC1 prevents using DMA Request 1, PWM0, PWM1, LCDCC and PCK1.

10.4.5

USART

Using USART2 prevents using EBI0’s NWAIT signal, Chip Select 4 and CompactFlash Chip

Enable 2.

Using USART1 prevents using EBI0’s Chip Select 5 and CompactFlash Chip Enable1.

10.4.6

NAND Flash

Using the NAND Flash interface prevents using NCS3, NCS6 and NCS7 to access other parallel

devices.

10.4.7

CompactFlash

Using the CompactFlash interface prevents using NCS4 and/or NCS5 to access other parallel

devices.

10.4.8

SPI0 and MCI Interface

SPI0 signals and MCI0 signals are multiplexed, as the DataFlash Card is hardware-compatible

with the SDCard. Only one can be used at a time.

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