Laptop User Manual

S3C2440A RISC MICROPROCESSOR MEMORY CONTROLLER
DEC.13, 2002
5-15
BANK CONTROL REGISTER (BANKCONn: nGCS0-nGCS5)
Register Address R/W Description Reset Value
BANKCON0 0x48000004 R/W Bank 0 control register 0x0700
BANKCON1 0x48000008 R/W Bank 1 control register 0x0700
BANKCON2 0x4800000C R/W Bank 2 control register 0x0700
BANKCON3 0x48000010 R/W Bank 3 control register 0x0700
BANKCON4 0x48000014 R/W Bank 4 control register 0x0700
BANKCON5 0x48000018 R/W Bank 5 control register 0x0700
BANKCONn Bit Description Initial State
Tacs [14:13] Address set-up time before nGCSn
00 = 0 clock 01 = 1 clock
10 = 2 clocks 11 = 4 clocks
00
Tcos [12:11] Chip selection set-up time before nOE
00 = 0 clock 01 = 1 clock
10 = 2 clocks 11 = 4 clocks
00
Tacc [10:8] Access cycle
000 = 1 clock 001 = 2 clocks
010 = 3 clocks 011 = 4 clocks
100 = 6 clocks 101 = 8 clocks
110 = 10 clocks 111 = 14 clocks
Note: When nWAIT signal is used, Tacc ≥ 4 clocks.
111
Tcoh [7:6] Chip selection hold time after nOE
00 = 0 clock 01 = 1 clock
10 = 2 clocks 11 = 4 clocks
000
Tcah [5:4] Address hold time after nGCSn
00 = 0 clock 01 = 1 clock
10 = 2 clocks 11 = 4 clocks
00
Tacp [3:2] Page mode access cycle @ Page mode
00 = 2 clocks 01 = 3 clocks
10 = 4 clocks 11 = 6 clocks
00
PMC [1:0] Page mode configuration
00 = normal (1 data) 01 = 4 data
10 = 8 data 11 = 16 data
00