CS61584A-IQ3Z datasheet(10/54 Pages) CIRRUS

No de pièce	CS61584A-IQ3Z

Description	DUAL T1/E1 LINE INTERFACE

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Fabricant	CIRRUS [Cirrus Logic]

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CS61584A

10

DS261PP5

SWITCHING CHARACTERISTICS - SERIAL PORT (T

A = -40 to 85 °C; DV+, TV+, RV+ =

nominal ± 0.3 V; Inputs: Logic 0 = 0 V, Logic 1 = RV+)

Notes: 28. If SPOL = 0, then CS should return high no sooner than 20 ns after the 16th rising edge of SCLK during

a serial port read.

29. Output load capacitance = 50 pF.

Parameter

Symbol

Min

Typ

Max

Unit

SDI to SCLK Setup Time

tdc

25

-

ns

SCLK to SDI Hold Time

tcdh

25

-

ns

SCLK Low Time

tcl

50

-

ns

SCLK High Time

tch

50

-

ns

SCLK Rise and Fall Time

tr, tf

-

15

ns

CS to SCLK Setup Time

tcc

20

-

ns

SCLK to CS Hold Time

(Note 28)

tcch

20

-

ns

CS Inactive Time

tcwh

100

-

ns

SDO Valid to SCLK

(Note 29)

tcdv

-

50

ns

CS to SDO High Z

tcdz

-50

-

ns

t dc

t cc

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

CS

SCLK

SDO

SPOL = 0

t cdz

cdv

t

Figure 5. Serial Port Read Timing Diagram

CS61584A

10

DS261F1

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