GPBA01B datasheet(13/29 Pages) GENERALPLUS

13 / 29 page

GPBA01B

Proprietary & Confidential

MAY 28, 2007

Version: 1.1

7.6.2. Memory Mapping Summary with Configuration 2~7

Mapping Address

Bank Select Value($0000)

Mode

Chip Selection

CFG=2

Asserting CE0 to select last 8KB memory

CFG=4

Bank, with b[4:0] become 11111.

CFG=5

CFG=6

$2000~$3FFF (8K)

CFG=7

1XXXXXXX

CFG=2

Access 32KB Memory with

CE0

1BBBBBBB

CFG=3

Access 4MB Memory with CE0

10XBBBBB

CFG=4

Access 1MB Memory with CE1

11XBBBBB

CFG=4

Access 1MB Memory with CE0

1BBBBBBB

CFG=5

Access 4MB Memory with CE1

100BBBBB

CFG=6

Access 1MB Memory with CE2

101BBBBB

CFG=6

Access 1MB Memory with

CE1

11XBBBBB

CFG=6

Access 1MB Memory with CE0

10BBBBBB

CFG=7

Access 2MB Memory with CE2

$8000~$BFFF

$4000~$7FFF

(32K each bank, mainly

used for memory

extension)

11BBBBBB

CFG=7

Access 2MB Memory with CE1

Note1: “B” is for extender memory bank selection; “KB” means K-byte and “MB” for M-byte.

Note2: “X” means “don’t care” which has no effect on bank selection.

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