參數(shù)資料
型號(hào): ZL50022QCC
廠商: ZARLINK SEMICONDUCTOR INC
元件分類(lèi): 路由/交換
英文描述: Enhanced 4 K Digital Switch with Stratum 4E DPLL
中文描述: TELECOM, DIGITAL TIME SWITCH, PQFP256
封裝: 28 X 28 MM, 1.40 MM HEIGHT, MS-026BJC, LQFP-256
文件頁(yè)數(shù): 95/121頁(yè)
文件大?。?/td> 939K
代理商: ZL50022QCC
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ZL50022
Data Sheet
95
Zarlink Semiconductor Inc.
Characteristics are over recommended operating conditions unless otherwise stated.
Figure 27 - Motorola Non-Multiplexed Bus Timing - Write Access
AC Electrical Characteristics
- Motorola Non-Multiplexed Bus Mode - Write Access
Characteristics
Sym.
Min.
Typ.
Max.
Units
Test Conditions
2
1
2
3
4
5
6
7
8
9
CS de-asserted time
DS de-asserted time
CS setup to DS falling
R/W setup to DS falling
Address setup to DS falling
Data setup to DS falling
CS hold after DS rising
R/W hold after DS rising
Address hold after DS rising
10 Data hold from DS rising
t
CSD
t
DSD
t
CSS
t
RWS
t
AS
t
DS
t
CSH
t
RWH
t
AH
t
DH
15
15
0
10
5
0
0
0
0
5
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
C
L
= 50 pF
C
L
= 50 pF, R
L
= 1 K
(Note 1)
11 Acknowledgement delay time.
From DS low to DTA low:
Registers
Memory
t
AKD
55
150
12
ns
ns
ns
C
L
= 50 pF
C
L
= 50 pF
C
L
= 50 pF, R
L
= 1 K
(Note 1)
12 Acknowledgement hold time.
From DS high to DTA high
13 DTA drive high to HiZ
t
AKH
4
t
AKZ
8
ns
Note 1:
High impedance is measured by pulling to the appropriate rail with R
L
, with timing corrected to cancel time taken to
discharge C
L
.
A delay of 500
μ
s to 2 ms (see Section 17.2 on page 47) must be applied before the first microprocessor access is
performed after the RESET pin is set high.
Note 2:
DS
A0-A13
t
CSH
t
AH
t
RWS
R/W
t
AS
t
RWH
t
AKD
t
AKH
DTA
V
CT
V
CT
V
CT
V
CT
V
CT
t
CSS
t
DSD
CS
t
AKZ
D0-D15
t
DH
t
DS
V
CT
VALID WRITE DATA
t
CSD
VALID ADDRESS
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