AMD-K6 Datasheet, PDF (271/346 Pages) Advanced Micro Devices – AMD-K6 Processor

20695H/0—March 1998
Preliminary Information
AMD-K6^® Processor Data Sheet
Table 54. TCK Waveform and TRST# Timing at 25 MHz
Symbol
Parameter Description
Preliminary Data
Min
Max
Figure
Comments
TCK Frequency
25 MHz
88
t₁₀₃
TCK Period
40.0 ns
88
t₁₀₄
TCK High Time
14.0 ns
88
t₁₀₅
TCK Low Time
14.0 ns
88
t₁₀₆
TCK Fall Time
5.0 ns
88
Note 1, 2
t₁₀₇
TCK Rise Time
5.0 ns
88
Note 1, 2
t₁₀₈
TRST# Pulse Width
30.0 ns
89
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 55. Test Signal Timing at 25 MHz
Symbol
Parameter Description
t₁₀₉ TDI Setup Time
t_{110 TDI Hold Time}
t₁₁₁ TMS Setup Time
t_{112 TMS Hold Time}
t₁₁₃ TDO Valid Delay
t_{114 TDO Float Delay}
t₁₁₅ All Outputs (Non-Test) Valid Delay
t_{116 All Outputs (Non-Test) Float Delay}
t₁₁₇ All Inputs (Non-Test) Setup Time
t_{118 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
90
90
90
90
90
90
90
90
90
90
Notes
Note 2
Note 2
Note 2
Note 2
Note 1
Note 1
Note 1
Note 1
Note 2
Note 2
Chapter 16
Signal Switching Characteristics
253