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TMS320C31PQL60 数据表(PDF) 33 Page - Texas Instruments |
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TMS320C31PQL60 数据表(HTML) 33 Page - Texas Instruments |
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33 / 48 page ![]() TMS320C31, TMS320LC31 DIGITAL SIGNAL PROCESSORS SPRS035B – MARCH 1996 – REVISED JANUARY 1999 33 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443 serial-port timing parameters for TMS320C31-40 and TMS320LC31-40 (see Figure 25 and Figure 26) NO. ’C31-40 ’LC31-40 UNIT MIN MAX 54 td(H1H-SCK) Delay time, H1 high to internal CLKX/R 13 ns 55 t (SCK) Cycle time CLKX/R CLKX/R ext tc(H)x2.6 ns 55 tc(SCK) Cycle time, CLKX/R CLKX/R int tc(H)x2 tc(H)x232 ns 56 t (SCK) Pulse duration CLKX/R high/low CLKX/R ext tc(H)+10 ns 56 tw(SCK) Pulse duration, CLKX/R high/low CLKX/R int [tc(SCK)/2]–5 [tc(SCK)/2]+5 ns 57 tr(SCK) Rise time, CLKX/R 7 ns 58 tf(SCK) Fall time, CLKX/R 7 ns 59 td(C DX) Delay time CLKX to DX valid CLKX ext 30 ns 59 td(C-DX) Delay time, CLKX to DX valid CLKX int 17 ns 60 t (DR CLKRL) Setup time DR before CLKR low CLKR ext 9 ns 60 tsu(DR-CLKRL) Setup time, DR before CLKR low CLKR int 21 ns 61 th(CLKRL DR) Hold time DR from CLKR low CLKR ext 9 ns 61 th(CLKRL-DR) Hold time, DR from CLKR low CLKR int 0 ns 62 td(C FSX) Delay time CLKX to internal FSX high/low CLKX ext 27 ns 62 td(C-FSX) Delay time, CLKX to internal FSX high/low CLKX int 15 ns 63 t (FSR CLKRL) Setup time FSR before CLKR low CLKR ext 9 ns 63 tsu(FSR-CLKRL) Setup time, FSR before CLKR low CLKR int 9 ns 64 th(SCKL FS) Hold time FSX/R input from CLKX/R low CLKX/R ext 9 ns 64 th(SCKL-FS) Hold time, FSX/R input from CLKX/R low CLKX/R int 0 ns 65 t (FSX C) Setup time external FSX before CLKX CLKX ext –[tc(H)–8]† [tc(SCK)/2]–10† ns 65 tsu(FSX-C) Setup time, external FSX before CLKX CLKX int [tc(H)–21]† tc(SCK)/2† ns 66 td(CH DX)V Delay time, CLKX to first DX bit, FSX CLKX ext 30† ns 66 td(CH-DX)V y, , precedes CLKX high CLKX int 18† ns 67 td(FSX-DX)V Delay time, FSX to first DX bit, CLKX precedes FSX 30† ns 68 td(CH-DXZ) Delay time, CLKX high to DX high impedance following last data bit 17† ns † This value is characterized but not tested |
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