AM79C978 Advanced Micro Devices, AM79C978 Datasheet - Page 222

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

SWITCHING CHARACTERISTICS: BUS INTERFACE
222
Clock Timing
F
t
t
t
t
t
Output and Float Delay Timing
t
t
t
t
Setup and Hold Timing
t
t
t
t
CYC
HIGH
LOW
FALL
RISE
VAL
VAL
ON
OFF
SU
H
SU
H
CLK
Parameter
(GNT)
Symbol
(GNT)
(REQ)
CLK Frequency
CLK Period
CLK High Time
CLK Low Time
CLK Fall Time
CLK Rise Time
AD[31:00], C/BE[3:0], PAR, FRAME,
IRDY, TRDY, STOP, DEVSEL, PERR,
SERR
Valid Delay
REQ Valid Delay
AD[31:00], C/BE[3:0], PAR, FRAME,
IRDY, TRDY, STOP, DEVSEL Active
Delay
AD[31:00], C/BE[3:0], PAR, FRAME,
IRDY, TRDY, STOP, DEVSEL Float
Delay
AD[31:00], C/BE[3:0], PAR, FRAME,
IRDY, TRDY, STOP, DEVSEL, IDSEL
Setup Time
AD[31:00], C/BE[3:0], PAR, FRAME,
IRDY, TRDY, STOP, DEVSEL, IDSEL
Hold Time
GNT Setup Time
GNT Hold Time
Parameter Name
@ 1.5 V for 5 V signaling
@ 0.4 V
@ 2.0 V for 5 V signaling
@ 0.4 V
@ 0.8 V for 5 V signaling
@ 0.3 V
over 2 V p-p for 5 V signaling
over 0.4 V
(Note 1)
over 2 V p-p for 5 V signaling
over 0.4 V
(Note 1)
Am79C978
DD
DD
DD
DD
DD
Test Condition
for 3.3 V signaling
for 3.3 signaling
for 3.3 V signaling
for 3.3 V signaling
for 3.3 V signaling
0
30
12
12
1
1
2
2
2
7
0
10
0
Min
33
_
4
4
11
12
28
Max
MHz
ns
ns
ns
V/ns
V/ns
ns
ns
ns
ns
ns
ns
ns
ns
Unit