AR-B8172 User Manual
15
SRAM Access Configuration:
1. Enable SRAM access: SW4.PIN7 is “OFF” to Enable SRAM. If PIN7 is “On” then SRAM
access will be disable.
SW4 Logical description
OFF
H
ON
L
2. SRAM Address Selection:
SRAM Start Address SRAMSEG_SEL0 SRAMSEG_SEL1
D000:0000
L
L
D400:0000
H
H
D800:0000
H
L
DC00:0000
L
H
2. Device IO Address Selection:
3. RAM is 512KB with 32 banks, each bank is 16KB size.
※
Others mode not descript on the above tables are reserved.
Device IO Address CPLD_ADR3 CPLD_ADR2 CPLD_ADR1 CPLD_ADR0
200h
L
L
L
L
214h
L
L
L
H
2A4h
L
L
H
L
2F4h
L
L
H
H
2C0h
L
H
L
L
2C4h
L
H
L
H
2D0h
L
H
H
L
2D4h
L
H
H
H
2E0h
H
L
L
L
2E4h
H
L
H
L
