Datasheet

Datasheet 45
Signal Quality Specifications
NOTES:
1. BCLK period is 7.5 ns.
2. These values are specified at the processor core pins.
3. Overshoot/Undershoot Magnitude = 2.3 V is an absolute value and should never be exceeded.
4. Overshoot is measured relative to V
SS, while undershoot is measured relative to VTT.
5. Overshoot/Undershoot Pulse Duration is measured relative to 1.635 V.
NOTES:
1. PICCLK period is 30 ns.
2. This table applies to all 1.5 V tolerant non-AGTL+ signals. BCLK, PICCLK, and PWRGOOD are the only non-
AGTL+ signals that are 2.5 V tolerant at the processor core pins.
3. These values are specified at the processor core pins.
4. Overshoot/Undershoot Magnitude = 2.3 V is an absolute value and should never be exceeded.
5. Overshoot is measured relative to V
SS, while undershoot is measured relative to VTT.
6. Overshoot/Undershoot Pulse Duration is measured relative to 1.635 V.
Table 21. 133 MHz AGTL+ Signal Group Overshoot/Undershoot Tolerance
Overshoot/Undershoot
Magnitude
Maximum Pulse Duration
Unit Figure Notes
1, 2, 3, 4, 5
AF = 0.01 AF = 0.1 AF = 1
2.3 V 15 1.9 0.19 ns 15
2.25 V 15 3.7 0.37 ns 15
2.2 V 15 6.8 0.68 ns 15
2.15 V 15 12.5 1.25 ns 15
2.1 V 15 15 2.28 ns 15
2.05 V 15 15 4.1 ns 15
2.0 V 15 15 7.5 ns 15
Table 22. 33 MHz Non-AGTL+ Signal Group Overshoot/Undershoot Tolerance
Overshoot/Undershoot
Magnitude
Maximum Pulse Duration
Unit Figure Notes
1, 2, 3, 4, 5, 6
AF = 0.01 AF = 0.1 AF = 1
2.3 V 60 7.6 0.76 ns 15
2.25 V 60 14.8 1.48 ns 15
2.2 V 60 27.2 2.7 ns 15
2.15 V 60 50 5 ns 15
2.1 V 60 60 9.1 ns 15
2.05 V 60 60 16.4 ns 15
2.0 V 60 60 30 ns 15