参数资料
型号: SCD223110QCD
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: 2 CHANNEL(S), 256K bps, SERIAL COMM CONTROLLER, PQFP100
封装: METRIC, QFP-100
文件页数: 65/178页
文件大小: 2247K
代理商: SCD223110QCD
Intelligent Two-Channel LAN and WAN Communications Controller — CD2231
Datasheet
157
9.3
AC Electrical Characteristics
Symbol
Parameter
MIN
MAX
(Sheet 1 of 2)
tPERIOD
Period of CLK input (35 MHz maximum)
28.57
t1
CLK high to BUSCLK high
20
t
2
CLK high to BUSCLK low
20
Bus Arbitration
t11
CLK high to BGACK* tristate
25
t12
BGIN* low to address valid1
40
t13
Address hold after CLK high
0
t14
CLK high to address tristate
25
t15
CLK high to ADLD* low
25
t16
CLK high to ADLD* high
20
t17
Address setup to ADLD* high
15
t18
CLK high to AEN*/DATEN*/DATDIR* high
25
t19
CLK high to AEN*/DATEN*/DATDIR* tristate
25
t20
CLK high to AEN*/DATEN*/DATDIR* low
25
DMA Read
t
21
Data setup to CLK high
10
t
22
Data hold after CLK high
15
t
23
CLK high to address valid
30
t
24
CLK low to AS* low
25
t
25
CLK high to AS* high
20
t
26
CLK low to DS* low
25
t
27
CLK high to DS* high
20
t
28
DTACK* low setup to CLK high
10
t
29
DTACK* high setup to CLK high (to avoid false termination)
50
DMA Write
t
31
CLK high to data valid
40
t
32
Data hold after CLK high
0
t
33
CLK low to DS* low
25
t
34
CLK high to DS* high
20
t
35
DTACK* low setup to CLK high
10
t
36
DTACK* high setup to CLK high (to avoid false termination)
50
Host Read/Write
t
41
DS* and CS* low setup to CLK high
7
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