ACS8525 Semtech Corporation, ACS8525 Datasheet - Page 36

• Manufacturer Part Number: ACS8525
• Description: Line Card Protection Switch For Sonet/sdh Systems
• Manufacturer: Semtech Corporation

Figure 10 Read Access Timing for SERIAL Interface
Table 13 Read Access Timing for SERIAL Interface (For use with Figure 10)
Revision 3.00/October 2003 © Semtech Corp.
ADVANCED COMMUNICATIONS
Symbol
t
t
t
t
t
t
t
t
SU1
SU2
pw1
pw2
t
d1
d2
h1
h2
p
CSB
SCLK
SDI
SDO
CSB
SCLK
SDI
SDO
Setup SDI valid to SCLK
Setup CSB
Delay SCLK
Delay CSB
SCLK Low time
SCLK High time
Hold SDI valid after SCLK
Hold CSB Low after SCLK
Hold CSB Low after SCLK
Time between consecutive accesses (CSB
t
su1
CLKE = 0; SDO data is clocked out on the rising edge of SCLK
CLKE = 1; SDO data is clocked out on the falling edge of SCLK
rising edge
falling edge
rising edge
t
su2
Output not driven, pulled low by internal resistor
Output not driven, pulled low by internal resistor
R/W
R/W
_
_
to SDO high-Z
to SCLK
A0 A1 A2 A3 A4 A5 A6
A0 A1 A2 A3 A4 A5 A6
(SCLK
t
rising edge
h1
rising edge
rising edge
falling edge
falling edge
rising edge
Parameter
t
pw1
, for CLKE = 0
, for CLKE = 1
for CLKE = 1) to SDO valid
t
rising edge
pw2
FINAL
Page 36
to CSB
falling edge
D0 D1 D2 D3 D4 D5 D6 D7
t
d1
D0 D1 D2 D3 D4 D5 D6 D7
t
d1
)
14 ns
22 ns
22 ns
10 ns
4 ns
6 ns
5 ns
MIN
-
-
F8526D_013ReadAccSerial_01
ACS8525 LC/P
t
TYP
h2
-
-
-
-
-
-
-
-
-
t
h2
t
d2
t
d2
DATASHEET
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18 ns
16 ns
MAX
-
-
-
-
-
-
-