參數(shù)資料
型號(hào): HYB25R144180C
廠商: SIEMENS AG
英文描述: 144-Mbit direct RDRAM(144 Mbit 直接 RDRAM)
中文描述: 144兆位的直接的RDRAM(144兆直接的RDRAM)
文件頁數(shù): 63/93頁
文件大?。?/td> 919K
代理商: HYB25R144180C
Data Book
63
2.00
Direct RDRAM
128/144-MBit (256K
×
16/18
×
32s)
Figure 48
NAP and PDN Exit
t
Device selection timing slot is selected by DQS field of NAPX register
The DQS field must be written with "1" for this RDRAM
Exit to STBY or ATTN depends upon whether RLXR was
asserted at NAP or PDN entry time
d)
c)
DQS = 0
from SIO0 to SIO1
NAP / PDN
The packet is repeated
Use 0 for NAP exit, 1 for PDN exit
State
Power
SIO1
b)
a)
0/1
SIO0
CMD
SCK
0/1
0
CE
DQS = 1
b
b
a
a
1
DQS = 0
b
SPT04234
d
STBY / ATTN
*
+ (PDNXA
is exiting the NAP-A or PDN-A states
restricted interval if device PDEV
No COL packets may overlap the
Effective hold becomes
t
t
=
- (PDNX*256*
T24
T23
T21
T20
T19
T18
T16
T15
T17
T14
T13
T10 T11 T12
T9
T8
T5
T6
T7
T4
T3
T2
T1
T22
T0
t
If PSX = 1 in Init register, then NAP/PDN
exit is broadcast (no PDEV field).
COL4...COL0
DQA8...0
DQB8...0
ROW0
CTM/CFM
ROW2...
DQS = 1
b, c
S3
H3
t
S3
t
t
H3
< (PDNXA
if (PDNX
*64
256
*
T47
T46
T45
T42 T43
T41
T40
T38
T36
T35
T37
T39
T31
T30
T28
T26
T25
T27
T29
T34
T44
XOP
COP
ROP
COP
XOP
Restricted
PDNXB, MAX
PDNXB, MAX
SCYCLE
t
*
)
64
*
SCYCLE
SCYCLE
*
t
t
+
t
)
t
+
S4
)
t
H4
t
the restricted interval
No ROW packets may overlap
S4
t
H4
t
(NAPX
SCYCLE
t
)
*
SCYCLE
t
) / (256 PDNX*
SCYCLE
t
ROP
Restricted
).
PDEV5...0
PDEV5...0
b
b
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