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ADM5120
Register Description
4.7.13 MPMC Dynamic RC register, offset 048h
Bit # Type Name
Descriptions
Initial Value
4:0
R/W tRC
Active to active command period:
0x0 to 0x1E = n+1 clock cycle
0x1F = 32 clock cycles (reset value on nPOR).
0x1F
31:5
Reserved
Read undefined, must be written as zeros.
Note:
The delay is in MPMCCLK cycles.
4.7.14 MPMC Dynamic RFC register, offset 04Ch
Bit # Type Name
Descriptions
Initial Value
4:0
R/W tRFC
Auto refresh period and auto refresh to active
command period:
0x0 to 0x1E = n+1 clock cycle
0x1F = 32 clock cycles (reset value on nPOR).
0x1F
31:5
Reserved
Read undefined, must be written as zeros.
Note:
The delay is in MPMCCLK cycles.
4.7.15 MPMC Dynamic XSR register, offset 050h
Bit # Type Name
Descriptions
Initial Value
4:0
R/W tXSR
Exit self-refresh to active command period:
0x0 to 0x1E = n+1 clock cycle
0x1F = 32 clock cycles (reset value on nPOR).
0x1F
31:5
Reserved
Read undefined, must be written as zeros.
Note:
The delay is in MPMCCLK cycles.
4.7.16 MPMC Dynamic RRD register, offset 054h
Bit # Type Name
Initial Value
R/W
tRRD
Active
bank
A
to active bank B latency:
0x0 to 0xE = n+1 clock cycle
0xF = 16 clock cycles (reset value on nPOR).
0xF
31:4
Reserved
Read undefined, must be written as zeros.
Descriptions
3:0
Note:
The delay is in MPMCCLK cycles.
4.7.17 MPMC Dynamic MRD register, offset 058h
Bit #
ADMtek Inc.
4-42
Type Name
Descriptions
Initial Value
3:0
R/W tMRD
Load mode register to active command time:
0x0 to 0xE = n+1 clock cycle
0xF = 16 clock cycles (reset value on nPOR).
0xF