參數(shù)資料
型號(hào): MSC8254SVT1000B
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 數(shù)字信號(hào)處理
英文描述: 0-BIT, OTHER DSP, PBGA783
封裝: 29 X 29 MM, LEAD FREE, PLASTIC, FCBGA-783
文件頁數(shù): 42/68頁
文件大?。?/td> 909K
代理商: MSC8254SVT1000B
Electrical Characteristics
MSC8254 Quad-Core Digital Signal Processor Data Sheet, Rev. 4
Freescale Semiconductor
47
Figure 21 shows the TDM transmit signal timing.
Figure 22 provides the AC test load for the TDM/SI.
2.6.4
Timers AC Timing Specifications
Table 32 lists the timer input AC timing specifications.
Note:
For recommended operating conditions, see Table 3.
Figure 23 shows the AC test load for the timers.
Figure 21. TDM Transmit Signals
Figure 22. TDM AC Test Load
Table 32. Timers Input AC Timing Specifications
Characteristics
Symbol
Minimum
Unit
Notes
Timers inputs—minimum pulse width
TTIWID
8ns
1, 2
Notes:
1.
The maximum allowed frequency of timer outputs is 125 MHz. Configure the timer modules appropriately.
2.
Timer inputs and outputs are asynchronous to any visible clock. Timer outputs should be synchronized before use by any
external synchronous logic. Timer inputs are required to be valid for at least tTIWID ns to ensure proper operation.
Figure 23. Timer AC Test Load
TDMxTCK
TDMxTD
~ ~
TDMxRCK
TDMxTFS (output)
TDMxTFS (input)
tDM
tDM_HIGH
tDM_LOW
tDMIVKH
tDM_OUTAC
tDMFSIXKH
tDMTKHOV
tDMTKHOX
tDM_OUTHI
tDMFSKHOV
tDMFSKHOX
Output
Z0 = 50 Ω
VDDIO/2
RL = 50 Ω
Output
Z0 = 50 Ω
VDDIO/2
RL = 50 Ω
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