MT9125AE 데이터 시트보기 (PDF) - Zarlink Semiconductor Inc

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MT9125AE

Dual ADPCM Transcoder

Zarlink Semiconductor Inc 

Preliminary Information

MT9125

AC Electrical Characteristics† - ST-BUS Conversion (see Figure 14)

Voltages are with respect to ground (VSS) unless otherwise stated.

Characteristics

Sym Min Typ† Max Units

Test Conditions

1 Delay MCLK falling to C2o rising tD1

100

ns 150pF Load

2 Delay MCLK falling to Enable

tD2

100

ns 150pF Load

† Timing is over recommended temperature & power supply voltages.

‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.

F0i

MCLK

(C4i)

tD1

C2o

EN1

EN2

tD2

VIH

VIL

VIL

VIL

VOH

VOL

VOH

VOL

tD2

Figure 14 - ST-BUS Timing for External Signal Generation

AC Electrical Characteristics† - Mode Select Timing (see Figure 15)

Voltages are with respect to ground (VSS) unless otherwise stated.

Characteristics

Sym Min Typ† Max Units

Test Conditions

1

Mode Select Setup

tSU

500

ns

2

Mode Select Hold

tHOLD

500 ns

† Timing is over recommended temperature & power supply voltages.

‡ Typical figures are at 25°C and are for design aid only: not guaranteed and not subject to production testing.

MS1-MS4

ENB1 (SSI Mode)

EN1 (ST-BUS Mode)

tSU

tHOLD

Figure 15 - Mode Select Set-up and Hold Timing for Dynamic Operation

8-87

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