CS61310(2003) Просмотр технического описания (PDF) - Cirrus Logic

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CS61310
(Rev.:2003)

T1 Line Interface Unit

Cirrus Logic 

CS61310

SERIAL PORT SWITCHING CHARACTERISTICS

(TA = -40° to 85°C; TV+, RV+ = 5V ±5%; Inputs: Logic 0 = 0 V, Logic 1 = RV+)

Parameter

Symbol Min

Typ

Max

SDI to SCLK Setup Time

SCLK to SDI Hold Time

SCLK Low Time

SCLK High Time

SCLK Rise and Fall Time

CS to SCLK Setup Time

SCLK to CS Hold Time

CS Inactive Time

SCLK to SDO Valid

CS to SDO High Z

tdc

50

-

-

tcdh

50

-

-

tcl

240

-

-

tch

240

-

-

tr, tf

-

-

50

tcc

50

-

-

tcch

50

-

-

tcwh

250

-

-

(Note 22) tcdv

-

-

200

tcdz

-

100

-

Notes: 22. Output load capacitance = 50 pF

t cwh

CS

t cc t ch

t cl

t cch

SCLK

SDI

000000000000000000000000000000

t dc

LSB

t cdh

0000000000000000000000000

000000000000000000000000000000 LS B

CONTROL BYTE

0000000000000000000000000

DATA

t cdh

000000000000000000000000000000 M S B

BYTE

0000000000000000000000000000000000000000000000000000000000000000000000

Figure 4. Serial Port Write Timing Diagram

Units

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

CS

SCLK

SDI

LAS T A DD R BIT

tcdv

SDO

CLKE = 0

D0

D1

D6

tcdv

SDO

CLKE = 1

D0

D1

D6

D7

D7

Figure 5. Serial Port Read Timing Diagram

tcdz

HIGH Z

8

DS440F1 FEB ‘03

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