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TNETV2685FIBZUT7 数据表(PDF) 159 Page - Texas Instruments |
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TNETV2685FIBZUT7 数据表(HTML) 159 Page - Texas Instruments |
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159 / 191 page ![]() TMS320DM647 TMS320DM648 www.ti.com SPRS372H – MAY 2007 – REVISED APRIL 2012 Table 6-76. Switching Characteristics Over Recommended Operating Conditions for McASP (see Figure 6-49 and Figure 6-50)(1) 720, 800, 900, 1100 NO. PARAMETER UNIT MIN MAX 9 tc(AHCKRX) Cycle time, AHCLKR/X 20 ns 10 tw(AHCKRX) Pulse duration, AHCLKR/X high or low 10 ns 11 tc(CKRX) Cycle time, ACLKR/X ACLKR/X int 33 ns 12 tw(CKRX) Pulse duration, ACLKR/X high or low ACLKR/X int 16.5 ns ACLKR/X int 5 ns 13 td(CKRX-FRX) Delay time, ACLKR/X transmit edge to AFSX/R output valid ACLKR/X ext 14.28 ns ACLKX int 10 ns 14 td(CKX-AXRV) Delay time, ACLKX transmit edge to AXR output valid ACLKX ext 12.5 ns ACLKR/X int 10 ns Disable time, AXR high impedance following last data bit from 15 tdis(CKRX-AXRHZ) ACLKR/X transmit edge ACLKR/X ext 12.5 ns (1) ACLKX internal: ACLKXCTL.CLKXM=1, PDIR.ACLKX = 1 ACLKX external input: ACLKXCTL.CLKXM=0, PDIR.ACLKX=0 ACLKX external output: ACLKXCTL.CLKXM=0, PDIR.ACLKX=1 ACLKR internal: ACLKRCTL.CLKRM=1, PDIR.ACLKR = 1 ACLKR external input: ACLKRCTL.CLKRM=0, PDIR.ACLKR=0 ACLKR external output: ACLKRCTL.CLKRM=0, PDIR.ACLKR=1 Copyright © 2007–2012, Texas Instruments Incorporated Peripheral Information and Electrical Specifications 159 Submit Documentation Feedback Product Folder Link(s): TMS320DM647 TMS320DM648 |
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