AM79C970A Advanced Micro Devices, AM79C970A Datasheet - Page 178

• Manufacturer Part Number: AM79C970A
• Description: PCnet-PCI II Single-Chip Full-Duplex Ethernet Controller for PCI Local Bus Product
• Manufacturer: Advanced Micro Devices

SWITCHING CHARACTERISTICS: Bus Interface (continued)
Note:
1. Not tested; parameter guaranteed by characterization.
2. Parameter value is given for automatic EEPROM read operation. When EEPROM port (BCR19) is used to access the
178
EEPROM Timing
fEESK (EESK) EESK Frequency
Expansion ROM Interface Timing
tVAL (EROE) EROE Valid Delay from CLK
JTAG (IEEE 1149.1) Test Signal Timing
tHIGH (EESK) EESK High Time
tVAL (EESK) EECS Valid Output Delay from EESK
tLOW (EECS) EECS Low Time
tSU (EEDO) EEDO Setup Time to EESK
tVAL (EEDI)
Parameter
tH (EEDO)
tVAL (ERA)
(ERACLK)
tSU (ERD)
tH (ERD)
Symbol
EEPROM, software is responsible for meeting EEPROM timing requirements.
tVAL
tLOW
AMD
tJ11
tJ12
tJ13
tJ1
tJ2
tJ3
tJ4
tJ5
tJ6
tJ7
tJ8
tJ9
tJ4
t9
Parameter Description
EESK Low Time
EEDI Valid Output Delay from EESK
EEDO Hold Time from EESK
ERA Valid Delay from CLK
ERACLK Valid Delay from CLK
ERD Setup Time to CLK
ERD Hold Time to CLK
TCK Frequency
TCK Period
TCK High Time
TCK Low Time
TCK Rise Time
TCK Fall Time
TDI, TMS Setup Time
TDI, TMS Hold Time
TDO Valid Delay
TDO Float Delay
All Outputs (Non-Test) Valid Delay
All Outputs (Non-Test) Float Delay
All Outputs (Non-Test) Setup Time
All Outputs (Non-Test) Hold Time
P R E L I M I N A R Y
Am79C970A
Test Conditions
@ 1.5 V for V (Note 2)
@ 0.2 V
@ 0.8 V
@ 1.5 V for V (Note 2)
@ 1.5 V for V (Note 2)
@ 1.5 V for V (Note 2)
@ 1.5 V for V (Note 2)
@ 1.5 V for V (Note 2)
@ 1.5 V
@ 1.5 V
@ 1.5 V
@ 1.5 V
@ 1.5 V
@ 2.0 V
@ 0.8 V
1550
Min
780
780
–15
100
–15
50
10
45
45
0
8
3
3
8
7
Max
650
–15
–15
10
30
50
25
36
4
4
MHz
Unit
KHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns