MSM7620 データシートの表示（PDF） - Oki Electric Industry

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MSM7620

Echo Canceler

Oki Electric Industry 

¡ Semiconductor

AC Characteristics

Parameter

Symbol

Clock Frequency

fC

Clock Cycle Time

tMCK

Clock Duty Ratio

tDMC

Clock "H" Level Pulse Width

tMCH

Clock "L" Level Pulse Width

tMCL

Clock Rise Time

tr

Clock Fall Time

tf

Sync Clock Output Time

tDCM

Internal Sync Clock Frequency

fCO

Internal Sync Clock Output Cycle Time tCO

Internal Sync Clock Duty Ratio

tDCO

Internal Sync Signal Output Delay Time tDCC

Internal Sync Signal Period

tCYO

Internal Sync Signal Output Width tWSO

Transmit/receive Operation Clock Frequency fSCK

Transmit/receive Sync Clock Cycle Time tSCK

Transmit/receive Sync Clock Duty Ratio tDSC

Transmit/receive Sync Signal Period tCYC

Sync Timing

tXS

tSX

Sync Signal Width

tWSY

Receive Signal Setup Time

tDS

Receive Data Hold Time

tDH

Receive Data Input Time

tID

IRLD Signal Output Delay Time

tDIC

IRLD Signal Output Width

tWIR

Serial Output Delay Time

tSD

tXD

Condition

—

—

—

—

—

—

—

—

fc = 18 MHz

fc = 18 MHz

fc = 18 MHz

fc = 18 MHz

fc = 18 MHz

fc = 18 MHz

—

—

—

—

—

—

—

—

—

—

—

—

—

—

MSM7620

Min.

17.5

54.1

40

23.5

23.5

—

—

—

—

—

—

—

—

—

64

0.488

40

123

45

45

tSCK

45

45

—

—

—

—

—

(Ta = –40°C to +85°C)

Typ. Max. Unit

18.0 18.5 MHz

55.56 57.1 ns

50

60

%

—

—

ns

—

—

ns

—

5

ns

—

5

ns

—

100 ns

200

— kHz

5

—

ms

50

—

%

—

5

ns

125

—

ms

tCO

—

ms

—

2048 kHz

—

15.6 ms

50

60

%

125

—

ms

—

—

ns

—

—

ns

— tCYC–tSCK ms

—

—

ns

—

—

ns

7tSCK

—

ms

—

138 ns

tSCK

—

ms

—

90

ns

—

90

12/28

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