參數(shù)資料
型號(hào): W971GG6IB-25
廠商: WINBOND ELECTRONICS CORP
元件分類(lèi): DRAM
英文描述: 32M X 16 DDR DRAM, 0.4 ns, PBGA84
封裝: 8 X 12.50 MM, ROHS COMPLIANT, WBGA-84
文件頁(yè)數(shù): 48/86頁(yè)
文件大?。?/td> 1360K
代理商: W971GG6IB-25
W971GG6IB
Publication Release Date: Oct. 23, 2009
- 52 -
Revision A02
- tJIT(duty)
tJIT(duty) is defined as the cumulative set of tCH jitter and tCL jitter. tCH jitter is the largest deviation of any single tCH from
tCH(avg). tCL jitter is the largest deviation of any single tCL from tCL(avg).
tJIT(duty) = Min/max of {tJIT(CH), tJIT(CL)}
where,
tJIT(CH) = {tCHi- tCH(avg) where i=1 to 200}
tJIT(CL) = {tCLi- tCL(avg) where i=1 to 200}
- tJIT(per), tJIT(per,lck)
tJIT(per) is defined as the largest deviation of any single tCK from tCK(avg).
tJIT(per) = Min/max of {tCKi- tCK(avg) where i=1 to 200}
tJIT(per) defines the single period jitter when the DLL is already locked.
tJIT(per,lck) uses the same definition for single period jitter, during the DLL locking period only.
tJIT(per) and tJIT(per,lck) are not guaranteed through final production testing.
- tJIT(cc), tJIT(cc,lck)
tJIT(cc) is defined as the difference in clock period between two consecutive clock cycles:
tJIT(cc) = Max of |tCKi+1 – tCKi|
tJIT(cc) defines the cycle to cycle jitter when the DLL is already locked.
tJIT(cc,lck) uses the same definition for cycle to cycle jitter, during the DLL locking period only.
tJIT(cc) and tJIT(cc,lck) are not guaranteed through final production testing.
- tERR(2per), tERR (3per), tERR (4per), tERR (5per), tERR (6-10per) and tERR (11-50per)
tERR is defined as the cumulative error across multiple consecutive cycles from tCK(avg).
tERR(nper) =
+
=
1
n
i
j
tCK
n × tCK(avg)
Where
50per)
R(11
for tER
50
n
11
10per)
R(6
for tER
10
n
6
R(5per)
for tER
5
=
n
R(4per)
for tER
4
=
n
R(3per)
for tER
3
=
n
R(2per)
for tER
2
=
n
相關(guān)PDF資料
PDF描述
W9751G6JB-25A 32M X 16 DDR DRAM, 0.4 ns, PBGA84
W9751G8JB-18 DDR DRAM, PBGA84
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W9812G21H-6C 4M X 32 SYNCHRONOUS DRAM, 4.5 ns, PDSO86
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