參數(shù)資料
型號： UPD488448FB-C80-45-DQ1
廠商： NEC Corp.
英文描述： 128 M-bit Direct Rambus⑩ DRAM
中文描述： 128 M位DRAM的直接Rambus的⑩
文件頁數(shù)： 40/80頁
文件大?。?/td> 1902K
代理商： UPD488448FB-C80-45-DQ1
Data Sheet M14837EJ3V0DS00
40
μ
PD488448 for Rev. P
Table 22-1 Control Register Summary (2/2)
SA11..SA0
Register
Field
read-write/ read-only
Description
047
16
PDNX
PDNX
read-write, 13 bits
PDN exit. Specifies length of PDN exit phase A + phase B.
048
16
TPARM
TCAS
read-write, 2 bits
t
CAS-C
core parameter. Determines t
OFFP
datasheet parameter.
TCLS
read-write, 2 bits
t
CLS-C
core parameter. Determines t
CAC
and t
OFFP
datasheet parameters.
TCDLY0
read-write, 3 bits
t
CDLY0-C
core parameter. Programmable delay for read data.
049
16
TFRM
TFRM
read-write, 4 bits
t
FRM-C
core parameter. Determines ROW - COL packet framing interval.
04a
16
TCDLY1 TCDLY1
read-write, 3 bits
t
CDLY-1
core parameter. Programmable delay for read data.
04c
16
TCYCLE TCYCLE
read-write, 14 bits
t
CYCLE
datasheet parameter. Specifies cycle time in 64ps units.
04b
16
SKIP
AS
read-only, 1 bit
Autoskip value established by the SETF command.
MSE
read-write, 1 bit
Manual skip enable. Allows the MS value to override the AS value.
MS
read-write, 1 bit
Manual skip value.
04d
16
TEST77
TEST77
read-write, 16 bits
Test register. Write with zero after SIO reset.
04e
16
TEST78
TEST78
read-write, 16 bits
Test register.
04f
16
TEST79
TEST79
read-write, 16 bits
Test register. Do not read or write after SIO reset.
080
16
-Off
16
reserved reserved
vendor-specific
Vendor-specific test registers. Do not read or write after SIO reset.
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