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TNETA1585PCM 数据表(PDF) 27 Page - Texas Instruments |
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TNETA1585PCM 数据表(HTML) 27 Page - Texas Instruments |
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27 / 32 page  TNETA1585 ATM TRAFFIC MANAGEMENT SCHEDULER DEVICE WITH RECEIVE UTOPIA AND COPROCESSOR INTERFACES SDNS041A – NOVEMBER 1996 – REVISED JULY 1998 27 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing requirements (see Figure 10) coprocessor interface (TCCX) NO. MIN MAX UNIT 1 tsu(TCCX) Setup time, TCCX high before CLOCK ↑ 10 ns 2 th(TCCX) Hold time, TCCX valid after CLOCK ↑ 1 ns CLOCK (input) 1 2 TCCX (input) Frame Send ACK Scheduler Source Cell Type (3 bits) CLP DMA Number (11 Bits) Figure 10. TCCX Interface timing requirements (see Figure 11) coprocessor interface (RCCX) NO. MIN MAX UNIT 1 tsu(RCCX) Setup time, RCCX high before CLOCK ↑ 10 ns 2 th(RCCX) Hold time, RCCX valid after CLOCK ↑ 1 ns RCCX (input) CLOCK (input) 1 2 Frame GCI DMA Number (11 bits) Figure 11. RCCX Interface timing requirements (see Figure 12) coprocessor interface (DAX) NO. MIN MAX UNIT 1 tsu(DAX) Setup time, DAX high before CLOCK ↑ 10 ns 2 th(DAX) Hold time, DAX valid after CLOCK ↑ 1 ns DAX (input) CLOCK (input) 1 2 Frame DAV DMA Number (11 bits) Figure 12. DAX Interface |
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