Fujitsu MB91460 SERIES Catatan Aplikasi - Halaman 20

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Enabling chip select

; 4.8.1 Select Chip select (Only EXTBUS == ON)

;======================================================================================

;

#set

CS0

#set

CS1

#set

CS2

#set

CS3

#set

CS4

#set

CS5

#set

CS6

#set

CS7

#set

SDRAM

;

#set

ENACSX

;

; Note: If the SWB Monitor Debugger is used, set the CS1 (external RAM only) or CS0 and

;

CS 1 (external RAM and flash) to off.

; Note: Not all Chip selects are supported by the different devices.

;

data sheet.

Set momory addressing

;======================================================================================

; 4.8.2 Set memory addressing for Chip selects (only EXTBUS == ON)

;======================================================================================

#set

AREASEL0

#set

AREASEL1

#set

AREASEL2

#set

AREASEL3

#set

AREASEL4

#set

AREASEL5

#set

AREASEL6

#set

AREASEL7

; Configure the starting address of each used Chip select. Chip selects which are not

; used (not set to ON in "Select Chip select") need not be set (setting ignored).

;

; NOTE: Just the upper 16-bit of the start address must be set, e.g. when using start

; address 0x00080000 set 0x0008.

MCU-AN-300059-E-V11

DIRECT MEMORY ACCESS

Chapter 3 DMAC Examples

OFF

B'00000010

||||||||

||||||||__ CS0 bit, enable/disable CS0 (1/0)

|||||||___ CS1 bit, enable/disable CS1 (1/0)

||||||____ CS2 bit, enable/disable CS2 (1/0)

|||||_____ CS3 bit, enable/disable CS3 (1/0)

||||______ CS4 bit, enable/disable CS4 (1/0)

|||_______ CS5 bit, enable/disable CS5 (1/0)

||________ CS6 bit, enable/disable CS6 (1/0)

|_________ CS7 bit, enable/disable CS7 (1/0)

0x0020

0x2000

0x0000

0x3000

0x0000

- 20 -

; <<< select CS (ON/OFF)

; <<< select if a SDRAM is connected

; <<< set CS, ENACSX

; <<< set start add. for CS0, ASR0

; <<< set start add. for CS1, ASR1

; <<< set start add. for CS2, ASR2

; <<< set start add. for CS3, ASR3

; <<< set start add. for CS4, ASR4

; <<< set start add. for CS5, ASR5

; <<< set start add. for CS6, ASR6

; <<< set start add. for CS7, ASR7

Please check the