參數(shù)資料
型號: AM79C970
廠商: Advanced Micro Devices, Inc.
英文描述: PCnetTM-PCI Single-Chip Ethernet Controller for PCI Local Bus
中文描述: PCnetTM - PCI單芯片以太網(wǎng)控制器的PCI總線
文件頁數(shù): 137/168頁
文件大?。?/td> 943K
代理商: AM79C970
AMD
P R E L I M I N A R Y
1-1004
Am79C970
SWITCHING CHARACTERISTICS: Bus Interface
Parameter
Symbol
Clock Timing
Parameter Description
Test Conditions
Min
Max
Unit
CLK Frequency
CLK Period
CLK High Time
CLK Low Time
CLK Fall Time
CLK Rise Time
0
33
MHz
ns
ns
ns
V/ns
V/ns
t
CYC
t
HIGH
t
LOW
t
FALL
t
RISE
@ 1.5 V
@ 2.0 V
@ 0.8 V
over 2 V p-p
over 2 V p-p
30
12
12
1
1
4
4
Output and Float Delay Timing
t
VAL
AD[31:00], C/
BE
[3:0], PAR,
FRAME
,
IRDY
,
TRDY
,
STOP
,
LOCK
,
DEVSEL
,
PERR
,
SERR
Valid Delay
t
VAL
(
REQ
)
REQ
Valid Delay
f
EESK
EESK Frequency
t
VAL
(EEDI)
EEDI Valid Output Delay from EESK
t
VAL
(EESK)
EECS Valid Output Delay from EESK
t
ON
AD[31:00], C/
BE
[3:0], PAR,
FRAME
,
IRDY
,
TRDY
,
STOP
,
LOCK
,
DEVSEL
Active Delay
t
OFF
AD[31:00], C/
BE
[3:0], PAR,
FRAME
,
IRDY
,
TRDY
,
STOP
,
LOCK
,
DEVSEL
Float Delay
Setup and Hold Timing
t
SU
AD[31:00], C/
BE
[3:0], PAR,
FRAME
,
IRDY
,
TRDY
,
STOP
,
LOCK
,
DEVSEL
,
IDSEL
Setup Time
t
H
AD[31:00], C/
BE
[3:0], PAR,
FRAME
,
IRDY
,
TRDY
,
STOP
,
LOCK
,
DEVSEL
,
IDSEL
Hold Time
t
SU
(
GNT
)
GNT
Setup Time
t
H
(
GNT
)
GNT
Hold Time
t
SU
(EEDO)
EEDO Setup Time to EESK
t
H
(EEDO)
EEDO Hold Time from EESK
2
11
ns
1
12
650
400
400
11
ns
KHz
ns
ns
ns
(See note below)
(See note below)
(See note below)
100
0
2
28
ns
7
ns
0
ns
10
0
50
0
ns
ns
ns
ns
(See note below)
(See note below)
Note:
Parameter value is given for automatic EEPROM read operation. When EEPROM port (BCR19) is used to access the EEPROM,
software is responsible for meeting EEPROM timing requirements.
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