AMD AMD-K6-2/500AFX Data Sheet - Page 300
Signal Switching Characteristics, AMD-K6, 2 Processor Data Sheet, Table 69.
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AMD-K6®-2 Processor Data Sheet Preliminary Information 21850J/0-February 2000 Table 69. TCK Waveform and TRST# Timing at 25 MHz Symbol Parameter Description Preliminary Data Min Max Figure Comments TCK Frequency 25 MHz 101 t103 TCK Period 40.0 ns 101 t104 TCK High Time 14.0 ns 101 t105 TCK Low Time 14.0 ns 101 t106 TCK Fall Time 5.0 ns 101 Note 1, 2 t107 TCK Rise Time 5.0 ns 101 Note 1, 2 t108 TRST# Pulse Width 30.0 ns 102 Asynchronous Notes: 1. Rise/Fall times can be increased by 1.0 ns for each 10 MHz that TCK is run below its maximum frequency of 25 MHz. 2. Rise/Fall times are measured between 0.8 V and 2.0 V. Table 70. Test Signal Timing at 25 MHz Symbol Parameter Description t109 TDI Setup Time t110 TDI Hold Time t111 TMS Setup Time t112 TMS Hold Time t113 TDO Valid Delay t114 TDO Float Delay t115 All Outputs (Non-Test) Valid Delay t116 All Outputs (Non-Test) Float Delay t117 All Inputs (Non-Test) Setup Time t118 All Inputs (Non-Test) Hold Time Notes: 1. Parameter is measured from the TCK falling edge. 2. Parameter is measured from the TCK rising edge. Preliminary Data Min Max 5.0 ns 9.0 ns 5.0 ns 9.0 ns 3.0 ns 13.0 ns 16.0 ns 3.0 ns 13.0 ns 16.0 ns 5.0 ns 9.0 ns Figure 103 103 103 103 103 103 103 103 103 103 Notes Note 2 Note 2 Note 2 Note 2 Note 1 Note 1 Note 1 Note 1 Note 2 Note 2 280 Signal Switching Characteristics Chapter 16