參數(shù)資料
型號(hào)： K4R271669D-TCS8
廠商： SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述： 128Mbit RDRAM(D-die)
中文描述： 128Mbit的RDRAM（深模）
文件頁(yè)數(shù)： 11/20頁(yè)
文件大小： 310K
代理商： K4R271669D-TCS8
Page 9
Version 1.0 Dec. 2001
K4R271669D
Direct RDRAM
Preliminary
Table 7 shows the COP field encoding. The device must be
in the ATTN power state in order to receive COLC packets.
The COLC packet is used primarily to specify RD (read) and
WR (write) commands. Retire operations (moving data from
the write buffer to a sense amp) happen automatically. See
Figure 18 for a more detailed description.
The COLC packet can also specify a PREC command,
which precharges a bank and its associated sense amps. The
RDA/WRA commands are equivalent to combining RD/WR
with a PREC. RLXC (relax) performs a power mode transi-
tion. See
“
Power State Management
”
on page 50.
Table 8 shows the COLM and COLX field encodings. The
M bit is asserted to specify a COLM packet with two 8 bit
bytemask fields MA and MB. If the M bit is not asserted, an
COLX is specified. It has device and bank address fields,
and an opcode field. The primary use of the COLX packet is
to permit an independent PREX (precharge) command to be
specified without consuming control bandwidth on the ROW
pins. It is also used for the CAL(calibrate) and SAM
(sample) current control commands (see
“
Current and
Temperature Control
”
on page 56), and for the RLXX power
mode command (see
“
Power State Management
”
on page
50).
Table 7: COLC Packet Field Encodings
S
DC4.. DC0
(select device)
a
COP3..0 Name
Command Description
0
----
-----
-
No operation.
1
/= (DEVID4 ..0)
-----
-
Retire write buffer of this device.
1
== (DEVID4 ..0)
x000
b
NOCOP
Retire write buffer of this device.
1
== (DEVID4 ..0)
x001
WR
Retire write buffer of this device, then write column C5..C0 of bank BC4..BC0 to write buffer.
1
== (DEVID4 ..0)
x010
RSRV
Reserved, no operation.
1
== (DEVID4 ..0)
x011
RD
Read column C5..C0 of bank BC4..BC0 of this device.
1
== (DEVID4 ..0)
x100
PREC
Retire write buffer of this device, then precharge bank BC4..BC0 (see Figure 15).
1
== (DEVID4 ..0)
x101
WRA
Same as WR, but precharge bank BC4..BC0 after write buffer (with new data) is retired.
1
== (DEVID4 ..0)
x110
RSRV
Reserved, no operation.
1
== (DEVID4 ..0)
x111
RDA
Same as RD, but precharge bank BC4..BC0 afterward.
1
== (DEVID4 ..0)
1xxx
RLXC
Move this device into the standby (STBY) power state (see Figur e 47).
a.
“
/=
”
means not equal,
“
==
”
means equal.
b. An
“
x
”
entry indicates which commands may be combined. For instance, the two commands WR/RLXC may be specified in one COP value (1001).
Table 8: COLM Packet and COLX Packet Field Encodings
M
DX4 .. DX0
(selects device)
XOP4..0
Name
Command Description
1
----
-
MSK
MB/MA bytemasks used by WR/WRA.
0
/= (DEVID4 ..0)
-
-
No operation.
0
== (DEVID4 ..0)
00000
NOXOP
No operation.
0
== (DEVID4 ..0)
1xxx0
a
PREX
Precharge bank BX4..BX0 of this device (see Figure 15).
0
== (DEVID4 ..0)
x10x0
CAL
Calibrate (drive) I
OL
current for this device (see Figure 53).
0
== (DEVID4 ..0)
x11x0
CAL/SAM
Calibrate (drive) and Sample ( update) I
OL
current for this device (see Figure 53).
0
== (DEVID4 ..0)
xxx10
RLXX
Move this device into the standby (STBY) power state (see Figur e 47).
0
== (DEVID4 ..0)
xxxx1
RSRV
Reserved, no operation.
a. An
“
x
”
entry indicates which commands may be combined. For instance, the two commands PREX/RLXX may be specified in one XOP value (10010).
相關(guān)PDF資料
PDF描述
K4R271669F 128Mbit RDRAM(F-die)
K4S160822D 2Mx8 SDRAM 1M x 8bit x 2 Banks Synchronous DRAM LVTTL
K4S161622D 512K x 16Bit x 2 Banks Synchronous DRAM
K4S161622E 1M x 16 SDRAM
K4S161622E-TC10 1M x 16 SDRAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
K4R271669E 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mbit RDRAM(E-die)
K4R271669F 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:128Mbit RDRAM(F-die)
K4R271669F-RCS8000 制造商:Samsung 功能描述:128 DIRECT RDRAM X16 WBGA - Trays
K4R271669F-TCS8000 制造商:Samsung 功能描述:128 DIRECT RDRAM X16 WBGA - Trays
K4R271669H-DCS8000 制造商:Samsung Semiconductor 功能描述:128MRDRAMDIRECT RDRAMX16FBGA - Bulk
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*