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AM7968-125JC Datenblatt(PDF) 28 Page - Advanced Micro Devices |
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AM7968-125JC Datenblatt(HTML) 28 Page - Advanced Micro Devices |
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28 / 127 page ![]() AMD 24 Am7968/Am7969-125 SWITCHING CHARACTERISTICS (Note 20) Am7968-125 TAXIchip Transmitter (Notes 10, 13, 22) Parameter No. Symbol Parameter Description Test Conditions Min Max Units Bus Interface Signals: DI0–DI7, DI8/CI3, DI9/CI2, CI0–CI1, STRB, ACK, CLK 1tP CLK Period 8n 25n ns 2tPW CLK Pulse Width HIGH 30 ns 3tPW CLK Pulse Width LOW 30 ns 4tPW STRB Pulse Width HIGH (Note 7) 15 ns 5tPW STRB Pulse Width LOW 15 ns 6tBB Internal Byte Boundary to CLK ↓ 20 ns (Note 11) 9tS Data–STRB Setup Time 5 ns 10 tH Data–STRB Hold Time 15 ns 11 tH ACK ↑ to STRB↓ Hold (Note 8) TTL Output Load 0 ns 12 tH ACK ↓ to STRB↑ Hold TTL Output Load 0 ns 13 tPD STRB ↑ to ACK↑ (Note 18) TTL Output Load 40 ns 14 tPD STRB ↓ to ACK↓ TTL Output Load 23 ns 15 tPD CLK ↓ to ACK↑ (Note 18) TTL Output Load ns Serial Interface Signals: SEROUT+, SEROUT– (Note 2) 22 tSK ¦ SEROUT ± Skew ECL Output Load –200 +200 ps 23 tR ¦ SEROUT ± Output Rise Time ECL Output Load .45 2 ns 24 tF ¦ SEROUT ± Output Fall Time ECL Output Load .45 2 ns 26 tPW ¦ SEROUT ± Pulse Width LOW ECL Output Load ns 27 tPW ¦ SEROUT ± Pulse Width HIGH ECL Output Load ns Miscellaneous Signals: X1 (Note 15) 29 tPW X1 Pulse Width HIGH (Note 12) TTL Output Load on CLK 35 ns 30 tPW X1 Pulse Width LOW (Note 12) TTL Output Load on CLK 35 ns 32 tPD X1 ↑ to CLK↑ TTL Load 32 ns 33 tPD X1 ↓ to CLK↓ TTL Load 32 ns 3t1 n + 33 t1 n – 5% t1 n + 5% t1 n + 5% t1 n – 5% –9t1 8n +9 |
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