參數(shù)資料
型號: TMS320C2812ZHHS
廠商: TEXAS INSTRUMENTS INC
元件分類: 數(shù)字信號處理
英文描述: 16-BIT, 150 MHz, OTHER DSP, PBGA179
封裝: LEAD FREE, BGA-179
文件頁數(shù): 39/156頁
文件大?。?/td> 1826K
代理商: TMS320C2812ZHHS
Electrical Specifications
133
April 2001 Revised October 2005
SPRS174M
Lead 1
Active
Trail
XCLKOUT = XTIMCLK
XCLKOUT = 1/2 XTIMCLK
XA[0:18]
XD[0:15]
XREADY(Synch)
td(XCOHL-XWEL)
td(XCOHL-XWEH)
td(XCOHL-XZCSH)
td(XCOH-XA)
WS (Synch)
XZCS0AND1, XZCS2,
XZCS6AND7
XRD
XWE
XR/W
td(XCOH-XZCSL)
NOTES:
A.
All XINTF accesses (lead period) begin on the rising edge of XCLKOUT. When necessary, the device will insert an alignment cycle before an
access to meet this requirement.
B.
During alignment cycles, all signals will transition to their inactive state.
C.
During inactive cycles, the XINTF address bus will always hold the last address put out on the bus. This includes alignment cycles.
D.
For each sample, setup time from the beginning of the access can be calculated as
D = (XWRLEAD + XWRACTIVE + n 1) tc(XTIM) tsu(XRDYsynchL)XCOHL
where n is the sample number: n = 1, 2, 3 and so forth.
E.
Reference for the first sample is with respect to this point
E = (XWRLEAD + XWRACTIVE) tc(XTIM)
td(XCOH-XRNWL)
td(XCOHL-XRNWH)
ten(XD)XWEL
th(XD)XWEH
tsu(XRDHsynchH)XCOHL
tsu(XRDYsynchL)XCOHL
DOUT
td(XWEL-XD)
tdis(XD)XRNW
th(XRDYsynchL)
th(XRDYsynchH)XZCSH
= Don’t care. Signal can be high or low during this time.
Legend:
See Note E
See Note D
See
NotesA
and B
SeeNoteC
te(XRDYsynchH)
Figure 634. Write With Synchronous XREADY Access
XTIMING register parameters used for this example:
XRDLEAD
XRDACTIVE
XRDTRAIL
USEREADY
X2TIMING
XWRLEAD
XWRACTIVE
XWRTRAIL
READYMODE
N/A
1
0
≥1
3
≥1
0 = XREADY
(Synch)
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