參數(shù)資料
型號: AM79C974KCW
廠商: ADVANCED MICRO DEVICES INC
元件分類: 微控制器/微處理器
英文描述: PCnetTM-SCSI Combination Ethernet and SCSI Controller for PCI Systems
中文描述: 2 CHANNEL(S), 10M bps, LOCAL AREA NETWORK CONTROLLER, PQFP132
封裝: PLASTIC, QFP-132
文件頁數(shù): 95/153頁
文件大?。?/td> 838K
代理商: AM79C974KCW
P R E L I M I N A R Y
AMD
95
Am79C974
AC SWITCHING CHARACTERISTICS over operating range unless otherwise specified
PCI Bus Interface and Board 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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