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AM79C975VCW Datasheet(PDF) 228 Page - Advanced Micro Devices |
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AM79C975VCW Datasheet(HTML) 228 Page - Advanced Micro Devices |
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228 / 304 page  228 Am79C973/Am79C975 P R E L I M INARY SWITCHING CHARACTERISTICS: BUS INTERFACE (CONCLUDED) Notes: 1. Not tested; parameter guaranteed by design characterization. 2. Parameter value is given for automatic EEPROM read operation. When EEPROM port (BCR19) is used to access the EE- PROM, software is responsible for meeting EEPROM timing requirements. Analog I/O - PECL Mode Notes: 1. Applies to RX+, RX-, SDI+, SDI- inputs only. Any voltage applied to these pins must not be below VI min or above VI max. 2. Tested for DVDD = Minimum, shown limits are specified over entire DVDD operating range. 3. Applies to TX+,TX- outputs only. Measured with the load of 82 W to DVDD and 150 W to DVSS on each SDI+ and SDI-. Parameter Symbol Parameter Name Test Condition Min Max Unit EEPROM Timing fEESK EESK Frequency (Note 2) 650 kHz tHIGH (EESK) EESK High Time 780 ns tLOW (EESK) EESK Low Time 780 ns tVAL (EEDI) EEDI Valid Output Delay from EESK (Note 2) -15 15 ns tVAL (EECS) EECS Valid Output Delay from EESK (Note 2) -15 15 ns tLOW (EECS) EECS Low Time 1550 ns tSU (EEDO) EEDO Setup Time to EESK (Note 2) 50 ns tH (EEDO) EEDO Hold Time from EESK (Note 2) 0 ns JTAG (IEEE 1149.1) Test Signal Timing tJ1 TCK Frequency 10 MHz tJ2 TCK Period 100 ns tJ3 TCK High Time @ 2.0 V 45 ns tJ4 TCK Low Time @ 0.8 V 45 ns tJ5 TCK Rise Time 4 ns tJ6 TCK Fall Time 4 ns tJ7 TDI, TMS Setup Time 8 ns tJ8 TDI, TMS Hold Time 10 ns tJ9 TDO Valid Delay 3 30 ns tJ10 TDO Float Delay 50 ns tJ11 All Outputs (Non-Test) Valid Delay 3 25 ns tJ12 All Outputs (Non-Test) Float Delay 36 ns tJ13 All Inputs (Non-Test)) Setup Time 8 ns tJ14 All Inputs (Non-Test) Hold Time 7 ns Symbol Parameter Description Test Conditions Minimum Maximum Unit VI Input Voltage Range (Note 1) 2.0 V DVDD-0.30 V VOH Output High Voltage PECL Load (Notes 2, 3) DVDD-0.45 DVDD-0.30 V VOL Output Low Voltage PECL Load (Notes 2, 3) DVDD-1.4 DVDD-1.15 V VDIFF Input Differential Voltage (Note 1) DVDD=Maximum 0.40 1.1 V |
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