參數(shù)資料
型號(hào)： ADZS-BF537-EZLITE
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 40/68頁(yè)
文件大?。?/td> 0K
描述： BOARD EVAL ADSP-BF537
產(chǎn)品培訓(xùn)模塊： Interfacing AV Converters to Blackfin Processors
Blackfin® Processor Core Architecture Overview
Blackfin® Device Drivers
Blackfin® Optimizations for Performance and Power Consumption
Blackfin® System Services
Introduction to VisualDSP++® Tools
特色產(chǎn)品： Blackfin? BF50x Series Processors
標(biāo)準(zhǔn)包裝： 1
系列： Blackfin®
類型： DSP
適用于相關(guān)產(chǎn)品： ADSP-BF537
所含物品： 評(píng)估板、軟件和說(shuō)明文檔
配用： ADZS-BFBLUET-EZEXT-ND - EZ-EXTENDER DAUGHTERBOARD
ADZS-BFLLCD-EZEXT-ND - BOARD EXT LANDSCAP LCD INTERFACE
ADZS-USBLAN-EZEXT-ND - BOARD DAUGHTER EXTENDED USB-LAN
ADZS-BFFPGA-EZEXT-ND - BOARD EVAL FPGA BLACKFIN EXTENDR
相關(guān)產(chǎn)品： ADSP-BF537KBCZ-6BV-ND - IC DSP CTLR 16BIT 208CSPBGA
ADSP-BF537BBCZ-5BV-ND - IC DSP CTLR 16BIT 208CSPBGA
ADSP-BF537KBCZ-6AV-ND - IC DSP CTLR 16BIT 182CSPBGA
ADSP-BF537BBCZ-5AV-ND - IC DSP CTLR 16BIT 182CSPBGA
ADSP-BF537BBCZ-5B-ND - IC DSP CTLR 16BIT 208CSPBGA
ADSP-BF537BBC-5A-ND - IC DSP CTLR 16BIT 182CSPBGA
Rev. J
|
Page 45 of 68
|
February 2014
Timer Clock Timing
Table 37 and Figure 27 describe timer clock timing.
Timer Cycle Timing
Table 38 and Figure 28 describe timer expired operations. The
input signal is asynchronous in “width capture mode” and
“external clock mode” and has an absolute maximum input fre-
quency of (fSCLK/2) MHz.
Table 37. Timer Clock Timing
Parameter
Min
Max
Unit
Switching Characteristic
tTODP
Timer Output Update Delay After PPI_CLK High
12
ns
Figure 27. Timer Clock Timing
PPI_CLK
TMRx OUTPUT
tTODP
Table 38. Timer Cycle Timing
2.25 V
V
DDEXT 2.70 V
or
0.80 V
V
DDINT 0.95 V
1
2.70 V
V
DDEXT 3.60 V
and
0.95 V
V
DDINT 1.43 V
2, 3
Parameter
Min
Max
Min
Max
Unit
Timing Characteristics
tWL
Timer Pulse Width Input Low (Measured In SCLK Cycles)
4
1 × tSCLK
ns
tWH
Timer Pulse Width Input High (Measured In SCLK Cycles)
1 × tSCLK
ns
tTIS
Timer Input Setup Time Before CLKOUT Low5
5.5
5.0
ns
tTIH
Timer Input Hold Time After CLKOUT Low5
1.5
ns
Switching Characteristics
tHTO
Timer Pulse Width Output (Measured In SCLK Cycles)
1 × tSCLK
(2
32–1) × t
SCLK 1 × tSCLK
(2
32–1) × t
SCLK
ns
tTOD
Timer Output Update Delay After CLKOUT High
6.5
6.0
ns
1 Applies to all nonautomotive-grade devices when operated within either of these voltage ranges.
2 Applies to all nonautomotive-grade devices when operated within these voltage ranges.
3 All automotive-grade devices are within these specifications.
4 The minimum pulse widths apply for TMRx signals in width capture and external clock modes. They also apply to the PF15 or PPI_CLK signals in PWM output mode.
5 Either a valid setup and hold time or a valid pulse width is sufficient. There is no need to resynchronize programmable flag inputs.
Figure 28. Timer Cycle Timing
CLKOUT
TMRx OUTPUT
TMRx INPUT
tTIS
tTIH
tWH,tWL
tTOD
tHTO
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