tc59ym916bkg24a ETC-unknow, tc59ym916bkg24a Datasheet - Page 31

• Manufacturer Part Number: tc59ym916bkg24a
• Description: The Second Generation 512-megabit Xdrtm Dram
• Manufacturer: ETC-unknow

Propagation Delay (continue)
and the timing parameters t
amount (t
paths between cycle T
The following relationship was shown for Figure 12.
of this change to the propagation delay t
paths from T
value of t
value, t
All timing parameters will be equal to their minimum values except t
In other words, the two timing parameters t
In other words, the values of the t
t
or
t
t
or
(t
t
or
t
or
t
in a system with minimum propagation delays:
t
and since t
(t
∆ RW
∆ RW
∆ RW,MIN
PD − Q
RW − BUB,XDR DRAM
RW − BUB, XDR DRAM
RW − BUB,XDRDRAM,MIN
∆ RW
PD,CYC
RW − BUB,XDR DRAM
PD,CYC,MIN
PD,CYC −
+ t
= (t
−t
+ t
∆ RW,MIN
PD − RQ
15
−t
CAC
CC
= (t
RW − BUB,
PD,CYC,MIN
to T
+ t
−t
t
CAC
PD,CYC,MIN
+ t
CWD
21
RW − BUB,
) = (t
for the system (this is equal to one t
9
at the XDR DRAM:
CWD
−t
at the Controller and cycle T
) + t
CWD
×10 is equal to t
= t
RW − BUB,XDR DRAM
= t
) = (t
= t
and t
RW − BUB,XDR DRAM
RW − BUB,
CC
RW − BUB,
)+ t
×10 + t
= t
PD − RQ
), where t
+ t
RW − BUB,XDR DRAM
RW − BUB,
CC
∆ RW
RW − BUB,XDR DRAM
+ t
RW − BUB,XDR DRAM,MIN
PD − D
+ t
×10 + t
increase from their minimum values by an equivalent amount.
RW − BUB,XDRDRAM,MIN
×10 + t
CAC
PD,CYC
PD,CYC
RW − BUB,YRAC,MIN
= t
×10 + t
+ t
CC
PD − D
PD,CYC
−t
RW − BUB,XDR DRAM
CC
+ t
RW − BUB,XDRDRAM,MIN
( = t
TC59YM916BKG24A,32A,32B,40B,32C,40C
= t
and t
PD,CYC,MIN
+ t
RW − BUB,XDR DRAM
+ t
PD − D
21
PD − D
−t
RW − BUB,XDR DRAM
PD − Q
∆ RW
RW − BUB,XDRDRAM,MIN
at the XDR DRAM:
+ t
CYCLE
+ t
. These will be larger than their minimum values by the
PD − Q
in both cases, the following is true:
PD − Q
and t
). As t
. This may be seen by evaluating the two timing
) can be derived by looking at the two timing
∆ RW,MIN
and t
PD,CYC
WR − BUB,XDR DRAM
∆ RW
)
timing parameters correspond to the
will change together. The relationship
) = (t
is increased from this minimum
∆ RW
−t
∆ RW,MIN
2004-12-15 31/76
(as in the top diagram),
)
Rev 0.1