k4r881869m Samsung Semiconductor, Inc., k4r881869m Datasheet - Page 50
k4r881869m
Manufacturer Part Number
k4r881869m
Description
288mbit Rdram 512k X 18 Bit X 2*16 Dependent Banks Direct Rdramtm
Manufacturer
Samsung Semiconductor, Inc.
Datasheet
1.K4R881869M.pdf
(64 pages)
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K4R881869M
RSL - Receive Timing
Figure 54 is a timing diagram which shows the detailed
requirements for the RSL input signals on the Channel.
The DQA, DQB, ROW, and COL signals are inputs which
receive information transmitted by a Direct RAC on the
Channel. Each signal is sampled twice per t
CFMN
CFM
ROW
DQA
DQB
COL
V
X-
t
DR
Figure 54: RSL Timing - Data Signals for Receive
CYCLE
t
interval.
DF
Page 48
The set/hold window of the sample points is t
sample points are centered at the 0% and 50% points of a
cycle, measured relative to the crossing points of the falling
CFM clock edge. The set and hold parameters are measured
at the V
The t
at the 20% and 80% points of the input transition.
t
S
even
DR
REF
and t
t
H
voltage point of the input transition.
DF
0.5•t
rise- and fall-time parameters are measured
V
V
CYCLE
CM
X+
t
Preliminary
Direct RDRAM
S
Rev. 0.9 Jan. 2000
odd
t
H
S
/t
H.
The
V
V
V
80%
50%
20%
V
80%
20%
V
REF
CIH
DIH
CIL
DIL
™
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