參數(shù)資料
型號: XRT79L74
廠商: Exar Corporation
英文描述: 4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
中文描述: 4 -通道DS3/E3自動柜員機(jī)用戶到網(wǎng)絡(luò)接口/ Combo IC對購買力平價
文件頁數(shù): 50/70頁
文件大?。?/td> 547K
代理商: XRT79L74
XRT79L74
REV. P1.0.0
PRELIMINARY
4 - CHANNEL DS3/E3 ATM UNI/PPP COMBO IC
48
MICROPROCESSOR INTERFACE TIMING - POWER PC 403 SYNCHRONOUS MODE
N
OTE
:
The value for "t0" through "t12" can be found in Table 4.
T
ABLE
3: T
IMING
I
NFORMATION
FOR
THE
M
ICROPROCESSOR
I
NTERFACE
WHEN
CONFIGURED
TO
OPERATE
IN
THE
M
OTOROLA
(68K) A
SYNCHRONOUS
M
ODE
Test Conditions: TA = 25°C, VCC = 3.3V±5% and 2.5V±5%, unless otherwise specified.
T
IMING
D
ESCRIPTION
M
IN
.
T
YP
.
M
AX
t0
Address setup time to pALE low
6
-
-
t1
Address hold time to pALE high
6
-
-
t2
Data setup time to pDS_L low
0
-
-
t3
Data hold time to pDS_L low
160
-
-
t4
pDS_L high to pRDY_L high (Write Cycle)
-
-
16
t5
pRDY_L low to Data valid
-
-
15
t6
pDS_L high to pRDY_L high (Read Cycle)
-
-
16
t7
pRDY_L high to Data invalid
3
-
-
F
IGURE
6. S
YNCHRONOUS
M
ODE
3 - IBM P
OWER
PC 403 I
NTERFACE
TIMING
(W
RITE
C
YCLE
)
pCLK
pCS_L
pA[14:0
]
pD[7:0]
pRdy
pRW_L
pOE_L
t0
t1
t2
t3
t4
Data
t5
t6
t7
Address
pWE_L
t8
t9
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