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)： 60/93頁
文件大?。?/td> 919K
代理商： HYB25R144180C
Direct RDRAM
128/144-MBit (256K
×
16/18
×
32s)
Data Book
60
2.00
Figure 45
Power State Transition Diagram
Once the RDRAM is in ATTN, ATTNW, or ATTNR states, it will remain there until it is explicitly
returned to the STBY state with a RLX command. A RLX command may be given in an ROWR,
COLC, or COLX packet (see the left side of
Figure 46
). It is usually given after all banks of the
RDRAM have been precharged; if other banks are still activated, then the RLX command would
probably not be given.
If a broadcast ROWA packet or ROWR packet (with the ATTN command) is received, the RDRAM’s
power state doesn’t change. If a broadcast ROWR packet with RLXR command is received, the
RDRAM goes to STBY.
SPD04231
ATTNR
ATTN
A
A
Automatic
Automatic
ATTNW
NAP-A
A
A
NAP-S
NAP
PDEV.CMD x SIO0
NAPR x RLXR
NAPR x RLXR
PDEV.CMD x SIO0
STBY
PDN-S
PDN-A
PDN
P
N
A
PDNR x RLXR
PDEV.CMD x SIO0
PDNR x RLXR
PDEV.CMD x SIO0
R
SETR/CLRR
NLIMIT
t
Notation:
SETR/CLRR
PDNR
NAPR
RLXR
RLX
SIO0
PDEV.CMD
ATTN
(Non-Broadcast) with ATTN Command
- SETR/CLRR Reset Sequence in SRQ Packets
- PDNR Command in ROWR Packet
- ROWA Packet (Non-Broadcast) or ROWR Packet
- RLX Command in ROWR, COLC, COLX Packets
- SIO0 Input Value
- RLX Command in ROWR Packet
- NAPR Command in ROWR Packet
- (PDEV = DEVID) x (CMD = 01)
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