AM79C978 Advanced Micro Devices, AM79C978 Datasheet - Page 223

• Manufacturer Part Number: AM79C978
• Description: Single-Chip 1/10 Mbps PCI Home Networking Controller
• Manufacturer: Advanced Micro Devices

SWITCHING CHARACTERISTICS: BUS INTERFACE (CONTINUED)
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-
EEPROM Timing
f
t
t
t
t
t
t
t
JTAG (IEEE 1149.1) Test Signal Timing
t
t
t
t
t
t
t
t
t
t
t
t
t
t
EESK
HIGH
LOW
VAL
VAL
LOW
SU
H
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J12
J13
J14
Parameter
(EEDO)
PROM, software is responsible for meeting EEPROM timing requirements.
Symbol
(EEDO)
(EEDI)
(EECS)
(EECS)
(EESK)
(EESK)
EESK Frequency
EESK High Time
EESK Low Time
EEDI Valid Output Delay from EESK (Note 2)
EECS Valid Output Delay from EESK (Note 2)
EECS Low Time
EEDO Setup Time to EESK
EEDO Hold Time from EESK
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 Inputs (Non-Test)) Setup Time
All Inputs (Non-Test) Hold Time
Parameter Name
(Note 2)
(Note 2)
(Note 2)
@ 2.0 V
@ 0.8 V
Am79C978
Test Condition
780
780
-15
-15
1550
50
0
100
45
45
8
10
3
3
8
7
Min
650
15
15
10
4
4
30
50
25
36
Max
kHz
ns
ns
ns
ns
ns
ns
ns
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit
223