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ADM5120
Register Description
Bit # Type Name
Descriptions
Initial Value
HIGH
(reset value on nPOR).For writes the respective active
bits in
nMPMCBLSOUT[3:0] are LOW.
1 = For reads the respective active bits in
nMPMCBLSOUT[3:0] are LOW. For writes the
respective
active bits in nMPMCBLSOUT[3:0] are LOW.
8 R/W
EW
Extended
wait:
0 = extended wait disabled (reset value on nPOR)
1=extended wait enabled.
0
18:9
Reserved
Read undefined, must be written as zeros.
19 R/W
B
Buffer
enable:
0 = write buffer disabled (reset value on nPOR)
1=write buffer enabled.
0
20 R/W
P
Write
protect:
0 = writes not protected (reset value on nPOR)
1 = write protected.
0
31:21
Reserved
Read undefined, must be written as zeros.
Note:
Synchronous burst mode memory devices are not supported.
4.7.22 MPMC Static Wait Wen [0,1,2,3] register
Note:
offset = 200h, 220h, 240h is for SMC_CSZ0, SMC_CSZ1, and SMC_CSZ2
respectively
Bit #
Name
Descriptions
3:0
R/W WAITWEN
Wait write enable: delay from chip select assertion to
write enable.
0000 = one HCLK cycle delay between assertion of
chip select and write enable (reset value on nPOR)
0001 to 1111 = (n+1) HCLK cycle delay.
0000
31:4
Reserved
Read undefined, must be written as zeros.
Type
Initial Value
Note:
The delay is (1) x tHCLK.
4.7.23 MPMC Static Wait Oen[0,1,2,3] register
Note:
offset = 200h, 220h, 240h is for SMC_CSZ0, SMC_CSZ1, and SMC_CSZ2
respectively
ADMtek Inc.
4-47
Bit # Type Name
Descriptions
Initial Value
3:0
R/W WAITOEN
Wait output enable: delay from chip select assertion to
output enable.
0000 = No delay (reset value on nPOR)
0001 to 1111 = n cycle delay.
0000
31:4
Reserved
Read undefined, must be written as zeros.