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TMS320C6713B Floating-Point Digital Signal Processor (Rev. A)

TMS320C6713B Floating-Point Digital Signal Processor (Rev. A)

TMS320C6713B Floating-Point Digital Signal Processor (Rev. A)

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PARAMETER MEASUREMENT INFORMATION<br />

SPRS294 − OCTOBER 2005<br />

Tester Pin Electronics<br />

Data Sheet Timing Reference <strong>Point</strong><br />

42 3.5 nH<br />

4.0 pF 1.85 pF<br />

Z0 = 50 <br />

(see note)<br />

Transmission Line<br />

Output<br />

Under<br />

Test<br />

Device Pin<br />

(see note)<br />

NOTE: The data sheet provides timing at the device pin. For output timing analysis, the tester pin electronics and its transmission line effects<br />

must be taken into account. A transmission line with a delay of 2 ns or longer can be used to produce the desired transmission line effect.<br />

The transmission line is intended as a load only. It is not necessary to add or subtract the transmission line delay (2 ns or longer) from<br />

the data sheet timings.<br />

Input requirements in this data sheet are tested with an input slew rate of < 4 Volts per nanosecond (4 V/ns) at the device pin.<br />

Figure 25. Test Load Circuit for AC Timing Measurements<br />

signal transition levels<br />

All input and output timing parameters are referenced to 1.5 V for both “0” and “1” logic levels.<br />

Vref = 1.5 V<br />

Figure 26. Input and Output Voltage Reference Levels for AC Timing Measurements<br />

All rise and fall transition timing parameters are referenced to V IL MAX and V IH MIN for input clocks, V OL MAX<br />

and V OH MIN for output clocks.<br />

Vref = VIH MIN (or VOH MIN)<br />

Figure 27. Rise and Fall Transition Time Voltage Reference Levels<br />

Vref = VIL MAX (or VOL MAX)<br />

POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443<br />

101

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