Cypress CY62158EV30 Manual do Utilizador descarregar pdf (Página 45)

Stellaris® LM3S9B96 Development Kit User’s Manual

September 5, 2010 45

Memory Map

The DK-LM3S9B96-EXP-FS8 expansion board memory map is shown in Table E-1 and Table E-2

shows the LCD Latch register.

The LCD Latch register is implemented as a set/clear register. To set a bit, the corresponding bit

must be set when writing to the LCD Latch Set register. To clear a bit, the corresponding bit must

be set when writing to the LCD Latch Clear register.

XN When clear, the L_XN signal is set to clear. When set, the L_XN signal is tri-stated. This

signal is used for the X- input to the touchscreen.

YN When clear, the L_YN signal is set to clear. When set, the L_YN signal is tri-stated. This

signal is used for the Y- input to the touchscreen.

RST When clear, the L_RSTN signal is set to clear. When set, the L_RSTN signal is reset. This

signal is used to reset the LCD panel.

Table E-1. Flash and SRAM Memory Expansion Board Memory Map

Device A[27:26] A[2:0] Description Access Base address

FLASH 0X XXX Flash memory (8 Megabytes) R/W 0x6000.0000

SRAM 10 XXX SRAM (1 Megabyte) R/W 0x6800.0000

CPLD

11 000

LCD latch set R/W 0x6C00.0000

11 001

LCD latch clear R/W 0x6C00.0001

LCD

11 010

LCD command port R

a. For reads to the LCD Command and Data Port registers, the corresponding LCD Port Read Start register must be read first,

followed by a 500 nsec delay before reading this register.

0x6C00.0002

11 011

LCD data port R

/W 0x6C00.0003

LCD

11 110

LCD command port read start R 0x6C00.0006

11 111

LCD data port read start R 0x6C00.0007

Table E-2. LCD Latch Register

7 6 5 4 3 2 1 0

Reserved RST YN XN

0 0 0 0 0 R/W R/W R/W

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 80 81

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