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TMS320VC5502 Datasheet(PDF) 176 Page - Texas Instruments |
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TMS320VC5502 Datasheet(HTML) 176 Page - Texas Instruments |
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176 / 189 page  www.ti.com 5.16.2 HPI General-Purpose I/O Timings TMS320VC5502 Fixed-Point Digital Signal Processor SPRS166H – APRIL 2001 – REVISED NOVEMBER 2004 Table 5-45 and Table 5-46 assume testing over recommended operating conditions (see Figure 5-45). Table 5-45. HPI General-Purpose I/O Timing Requirements (1) VC5502-200 VC5502-300 NO. UNIT MIN MAX H23 tsu(HAGPIO-COH) Setup time, HAGPIO input mode before CLKOUT high(2) 5 ns H24 th(COH-HAGPIO) Hold time, HAGPIO input mode after CLKOUT high(2) 0 ns H25 tsu(HDNMGPIO-COH) Setup time, HDNMGPIO input mode before CLKOUT high(3) 5 ns H26 th(COH-HDNMGPIO) Hold time, HDNMGPIO input mode after CLKOUT high(3) 0 ns H27 tsu(HDMGPIO-COH) Setup time, HDMGPIO input mode before CLKOUT high(4) 5 ns H28 th(COH-HDMGPIO) Hold time, HDMGPIO input mode after CLKOUT high(4) 0 ns H29 tsu(HCGPIO-COH) Setup time, HCGPIO input mode before CLKOUT high(5) 5 ns H30 th(COH-HCGPIO) Hold time, HCGPIO input mode after CLKOUT high(5) 0 ns (1) In this case, CLKOUT reflects SYSCLK1. The CLKOUT Selection Register (CLKOUTSR) can be programmed to select SYSCLK1 as CLKOUT. (2) HAGPIO refers to HPI.HA[15:0] configured as general-purpose input. (3) HDNMGPIO refers to HPI.HD[15:0] configured as general-purpose input during non-multiplexed operation of the HPI. (4) HDMGPIO refers to HPI.HD[7:0] configured as general-purpose input during multiplexed operation of the HPI. (5) HCGPIO refers to HPI.HAS (multiplexed mode only), HPI.HBIL (multiplexed mode only), HCNTL0, HCNTL1, HCS, HR/W, HDS1, HDS2, HRDY, and HINT configured as general-purpose input. Table 5-46. HPI General-Purpose I/O Switching Characteristics (1) VC5502-200 VC5502-300 NO. PARAMETER UNIT MIN MAX H19 td(COH-HAGPIO) Delay time, CLKOUT high to HAGPIO output mode(2) 10 ns H20 td(COH-HDNMGPIO) Delay time, CLKOUT high to HDNMGPIO output mode(3) 10 ns H21 td(COH-HDMGPIO) Delay time, CLKOUT high to HDMGPIO output mode(4) 10 ns H22 td(COH-HCGPIO) Delay time, CLKOUT high to HCGPIO output mode(5) 10 ns (1) In this case, CLKOUT reflects SYSCLK1. The CLKOUT Selection Register (CLKOUTSR) can be programmed to select SYSCLK1 as CLKOUT. (2) HAGPIO refers to HPI.HA[15:0] configured as general-purpose output. (3) HDNMGPIO refers to HPI.HD[15:0] configured as general-purpose output during non-multiplexed operation of the HPI. (4) HDMGPIO refers to HPI.HD[7:0] configured as general-purpose output during multiplexed operation of the HPI. (5) HCGPIO refers to HPI.HAS (multiplexed mode only), HPI.HBIL (multiplexed mode only), HCNTL0, HCNTL1, HCS, HR/W, HDS1, HDS2, HRDY, and HINT configured as general-purpose output. Specifications 176 |
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