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CS61581-IL Datasheet(PDF) 9 Page - Cirrus Logic

Part No. CS61581-IL
Description  T1/E1 Universal Line Interface
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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CS61581
DS211PP8
9
SWITCHING CHARACTERISTICS (TA = -40° to 85°C; TV+, RV+ = 5V ±5%;
Inputs: Logic 0 = 0 V, Logic 1 = RV+)
Notes: 24. Output load capacitance = 50 pF
Parameter
Symbol
Min
Typ
Max
Units
SDI to SCLK Setup Time
tdc
50
-
-
ns
SCLK to SDI Hold Time
tcdh
50
-
-
ns
SCLK Low Time
tcl
240
-
-
ns
SCLK High Time
tch
240
-
-
ns
SCLK Rise and Fall Time
tr, tf
-
-
50
ns
CS to SCLK Setup Time
tcc
50
-
-
ns
SCLK to CS Hold Time
tcch
50
-
-
ns
CS Inactive Time
tcwh
250
-
-
ns
SCLK to SDO Valid
(Note 24)
tcdv
--
200
ns
CS to SDO High Z
tcdz
-100
-
ns
t dc
t cc
LSB
LSB
MSB
CONTROL
BYTE
DATA
BYTE
CS
SCLK
SDI
t ch
t cwh
t cch
t cdh
t cl
t cdh
Figure 4. Serial Port Write Timing Diagram
HIGH Z
CS
SCLK
SDO
CLKE = 1
SDI
cdv
t
cdv
t
cdz
t
SDO
CLKE = 0
LAST ADDR BIT
D0
D1
D6
D7
D0
D1
D6
D7
Figure 5. Serial Port Read Timing Diagram
CS61581
DS211F1
9




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