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參數資料
型號: TS86101G2BCGL
廠商: ATMEL CORP
元件分類: DAC
英文描述: SERIAL INPUT LOADING, 10-BIT DAC, PBGA255
封裝: CBGA-255
文件頁數: 15/57頁
文件大小: 1119K
代理商: TS86101G2BCGL
22
5343C–BDC–03/06
TS86101G2B
Figure 5-3.
Data to Data Clock Forbidden Area
5.3
Phase Relationship Between Data Ready and CW_IN Clock Input
There is a forbidden time range in the phase relation between Data Ready and the CW_IN mas-
ter clock. This forbidden zone occurs when active rising edges of CW_IN and Data Ready do not
comply with the setup and hold times (see Figure 5-4 on page 22). Within this forbidden zone,
the data is stored in the second bank of master latches at the time when the first outputs of slave
latches switch (acquisition of next incoming data). Within this critical time range of 600 ps, data
pattern throughput transmission errors may occur.
To satisfy setup and hold times, the phase of the Data Ready input (D_CK_T to D_CK_F) can
be adjusted by choosing one of the 16 DSP clock shift positions (assuming that the DSP provid-
ing the data and Data Ready signals to the MUXDAC is clocked by the MUXDAC DSP clock’s
output signal).
Figure 5-4.
Data Ready (D_CK) to CW_IN Master Clock Timing
If the D_CK clock edge occurs within the forbidden zone, there is an ambiguity on the data to be
transferred from the first to the second bank of latch (data N or data N + 1).
Tsetup
Thold
Tsetup
Thold
Tsetup
Tthold
allowed
1.2 ns max
forbidden
Data
Clock
forbidden
Thold
Tsetup
CW_IN
D_CK
Forbidden area for rising edge
of D_CK = 600 ps max
2.5 ns
3.1 ns
1
2
相關PDF資料
PDF描述
TS86101G2BVGL SERIAL INPUT LOADING, 10-BIT DAC, PBGA255
TS86101G2BMGS SERIAL INPUT LOADING, 10-BIT DAC, PBGA255
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TS86101G2BVGL PARALLEL, WORD INPUT LOADING, 10-BIT DAC, CBGA255
TS86101G2BCGL PARALLEL, WORD INPUT LOADING, 10-BIT DAC, CBGA255
相關代理商/技術參數
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