MSM6927 Ver la hoja de datos (PDF) - Oki Electric Industry

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MSM6927

1200 bps Single Chip FSK MODEM

Oki Electric Industry 

¡ Semiconductor

MSM6927/6947

Demodulated Bit Characteristics

Parameter

Peak Intersymbol Distortion

Bit Error Rate

(VA = 12 V ±10%, VD = 5 V ±5%, Ta = 0 to 70°C)

Symbol

Condition

Min. Typ. Max. Unit

Back-to-back over input

ID signal range –6 to –40 dBm. —

9

511-bit test pattern.

—

%

Back-to-backwith

0.3 to 3.4 kHz

8 dB —

10–3

—

flat noise.

BER Receive signal S/N

level –25 dBm.

11 dB —

10–5

—

511-bit test pattern

Timing Characteristics

1. MSM6927

Parameter

RS/CS Delay Time

CD/ON Delay Time

Symbol Condition

TRC ON

RS1 = "0"

Æ CS = "0"

TRC OFF

RS1 = "1"

Æ CS = "1"

TCD ON

—

CD/OFF Delay Time

TCD OF

—

Soft Turn-OFF Time

TST

Receive Data Squelch Delay Time TSQ

—

SQ = "0"

RS1 = "1"

Æ RD = "1"

Hold

Refer to Fig. 7

Notes: *: Irrespective of I/O condition

(VA = 12 V ±10%, VD = 5 V ±5%, Ta = 0 to 70°C)

TS2 TS1 Min. Typ. Max. Unit

0 0 195

200

205

0 1 25

30

35

1 0 65

70

75

11

External delay timer

**

0

—

0.5

0 0 10

—

25

0 1 10

—

25

1 0 10

—

25

11

External delay timer

ms

00

5

—

15

01

5

—

15

10

5

—

15

11

External delay timer

** —

10

—

0 0 145

150

155

0 1 145

150

155

1 0 35

40

45

11

External delay timer

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