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CS61535A Datasheet(PDF) 8 Page - Cirrus Logic

Part No. CS61535A
Description  T1/E1 Line Interface
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Maker  CIRRUS [Cirrus Logic]
Homepage  http://www.cirrus.com
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SWITCHING CHARACTERISTICS (TA = -40° to 85°C; TV+, RV+ = ±5%;
Inputs: Logic 0 = 0V, Logic 1 = RV+)
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
(Note 38)
tcch
50
-
-
ns
CS Inactive Time
tcwh
250
-
-
ns
SCLK to SDO Valid
(Note 39)
tcdv
-
-
200
ns
CS to SDO High Z
tcdz
-
100
-
ns
Input Valid To PCS Falling Setup Time
tsu4
50
-
-
ns
PCS Rising to Input Invalid Hold Time
th4
50
-
-
ns
PCS Active Low Time
tpcsl
250
-
-
ns
Notes: 38. For CLKE = 0, CS must remain low at least 50 ns after the 16
th falling edge of SCLK.
39. Output load capacitance = 50pF.
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
CS61535A
8
DS40F3
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