參數(shù)資料
型號: MT90220
廠商: Mitel Networks Corporation
英文描述: Octal IMA/UNI PHY Device(八端口 IMA/UNI 物理層設(shè)備(八端口ATM IMA和UNI處理器))
中文描述: 八路IMA的/單向物理層設(shè)備(八端口IMA的/單向物理層設(shè)備(八端口自動(dòng)柜員機(jī)IMA的和單向處理器))
文件頁數(shù): 105/118頁
文件大小: 310K
代理商: MT90220
MT90220
97
Note 1 - For internal synchronization purposes, 2 system clock cycles are required between a write access and the next valid access.
Figure 34 - CPU Interface Intel Timing - Write Access
AC Electrical Characteristics - CPU Interface Intel Timing - Write Cycle
Characteristics
Sym
Min
Typ
Max
Units
Test Conditions
1
UP_CS* set-up time to UP_R/W*
falling edge
t
WS
1
ns
2
Address and Data set up before
rising edge of UP_R/W
t
SU
4
ns
3
UP_AD, UP_CS and Data hold time
after UP_R/W* rising edge
t
ADH
0
ns
4
UP_R/W low after rising edge or
UP_CS
t
CSH
1
ns
5
UP_CS* high before next UP_CS
low
t
WH
2
(see Note 1)
cycle
system
clock
UP_CS
ADDRESS VALID
UP_A[9:0]
UP_R/W
(WRITE)
DATA VALID
UP_D[7:0]
t
su
t
ws
UP_OE
(READ)
t
adh
t
wh
t
csh
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