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MSM7590L-01

Multi-Function ADPCM CODEC

Oki Electric Industry 

¡ Semiconductor

MSM7590L-01

AC Characteristics (Continued)

Condition

(VDD = 2.7 V to 3.6 V, Ta = –25°C to +70°C)

Parameter

Idle Channel Noise

Absolute Signal

Amplitude

Power Supply Noise

Rejection Ratio

Digital Output

Delay Time

PCM and ADPCM

Interface

Serial Port Digital

Input/Output Setting

Time

Shift Clock Frequency

Symbol Freq.

(Hz)

Level

(dBm0)

Min.

Others

NIDLT

—

NIDLR

—

AIN = SG

(*1)

—

(*1)

—

—

(*2)

AVT

1020

AVR

GSX2 0.285

0

VFRO 0.285

PSRRT Noise Freq. Noise Level

—

30

PSRRR : 0 to 50 kHz : 50 mVPP

30

tSDX

0

tSDR

0

tXD1

0

tRD1

1 LSTTL + 100 pF, See

—

tXD2

pull-up: 500 W Fig.4

0

tRD2

tXD3

0

tRD3

tM1

50

tM2

50

tM3

50

tM4

50

tM5

CL = 100 pF

100

tM6

—

See 50

tM7

Fig.5 50

tM8

0

tM9

50

tM10

50

tM11

0

fEXCK

—

—

EXCK —

Typ. Max. Unit

—

—

0.320

(*3)

0.320

(*3)

—

—

—

—

–68

(–75.7)

–72

(–79.7)

dBm0p

(dBmp)

0.359 Vrms

0.359 Vrms

—

dB

—

dB

200 ns

200 ns

—

200 ns

—

200 ns

—

200 ns

—

—

ns

—

—

ns

—

—

ns

—

—

ns

—

—

ns

—

—

ns

—

—

ns

—

50

ns

—

—

ns

—

—

ns

—

50

ns

—

10 MHz

*1 Use the P-message weighted filter

*2 PCMRI input code "11010101"(A-law)

"11111111"(m-law)

*3 0.320 Vrms = 0 dBm0 = –7.7 dBm

Note: All ADPCM coder and decoder characteristics comply with ITU-T Recommendation

G.726.

14/26

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