ACS8509 Semtech Corporation, ACS8509 Datasheet - Page 56
![no-image](/images/manufacturer_photos/0/5/596/semtech_corporation_sml.jpg)
ACS8509
Manufacturer Part Number
ACS8509
Description
Synchronous Equipment Timing Source for Sonet or SDH Network Elements
Manufacturer
Semtech Corporation
Datasheet
1.ACS8509.pdf
(68 pages)
- Current page: 56 of 68
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Figure 18 Write Access Timing in INTEL Mode
Table 35 Write Access Timing in INTEL Mode (for use with Figure 18)
Notes: (i) Timing with RDY. If RDY not used, t
Revision 2.00/January 2006 © Semtech Corp.
ADVANCED COMMUNICATIONS
Symbol
(ii) Timing if t
t
t
t
t
t
t
t
t
t
t
t
t
pw1
pw2
su1
su2
su3
t
d2
d3
d5
h1
h2
h3
h4
p
CSB
WRB
RDB
A
AD
RDY
Setup A valid to CSB
Setup CSB
Setup AD valid before WRB
Delay CSB
Delay WRB
Delay CSB
WRB Low time
RDY Low time
Hold A valid after WRB
Hold CSB Low after WRB
Hold WRB Low after RDY
Hold AD valid after WRB
Time between consecutive accesses (WRB
or WRB
h2
is greater than 170 ns, otherwise 5 ns after CSB rising edge.
rising edge
falling edge
rising edge
falling edge
Z
falling edge
t
su1
to RDB
to RDY high-Z
to RDY active
falling edge
to WRB
to RDY
address
t
d2
rising edge
t
falling edge)
su2
rising edge
rising edge
rising edge
pw1
rising edge
falling edge
falling edge
Parameter
becomes 180 ns.
t
d3
rising edge
t
t
pw2
pw1
FINAL
Page 56
t
data
su3
to WRB
t
h3
falling edge
t
h4
t
h1
t
h2
,
t
d5
170 ns
486 ns
310 ns
320 ns
0 ns
0 ns
3 ns
0 ns
0 ns
4 ns
MIN
-
-
-
(ii)
(i)
Z
ACS8509 SETS
F8110D_010WriteAccIntel_01
TYP
-
-
-
-
-
-
-
-
-
-
-
-
-
DATASHEET
www.semtech.com
472 ns
13 ns
14 ns
MAX
9 ns
-
-
-
-
-
-
-
-
-
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