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ADM5120
Register Description
4.4.8 Mem_control, offset: 0x1c
Bits
Type Name
Description
Initial value
2:0
RW
SDRAMsize
one bank information, the 2
nd
bank (SDRAM_CS1) is
the same
000, 101, 110, 111: reserved,
001: 1Mx32 (4Mbyte),
010: 2Mx32 (8Mbyte) (suggested setting)
011: 4Mx32 (16Mbyte),
100: 16Mx32 (64Mbyte)
101: 32Mx32 (128Mbyte)
4:3
Reserved
Not
Applicable
5
RW
SDRAM1_en
The bank1 of SDRAM enable,
0: disable (default),
1: enable (must in the single write)
0
7:6
Reserved
Not
Applicable
10:8 RW
SRAM0_size
000: disable if in the NAND mode,
110, 111: reserved,
001: 512Kbyte,
010: 1Mbyte (default)
011: 2Mbyte,
100: 4Mbyte
010
15:11
Reserved
Not
Applicable
18:16 RW
SRAM1_size
000: disable (default),
001: 512Kbyte,
010: 1Mbyte
011: 2Mbyte,
100: 4Mbyte,
101: 8Mbyte,
110, 111: reserved
000
28:19
Reserved
Applicable
29 RW
CSX0_wt_hold_ext
Extend the write data hold time from one clock to 3
clock (clock period = CLK_OUT) 0: normal, 1 clock,
default, 1: extend to 3 clocks
1
31:30
Reserved
Not Applicable
4.4.9 SW_conf, offset: 0x20
ADMtek Inc.
4-8
Bits
Type Name
Description
Initial value
0 Reserved
Not
Applicable
0
3:1
Reserved
Not
Applicable
7:4 RW age_tmr
aging
timer
→
0000: disable age, 1xxx: fast age
0001: 300sec,
0010: 600 ……
0111: 38400sec
0001
9:8 RW BC_prev
Broadcast
prevention:
00