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Part Number: MSM7557
Description: The MSM7557 is a single chip MSK modem with base band voice processor for cordless telephone.The MSM7557 voice ...
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MSM7557
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DataSheet
General Description
MSM7557 General Description
The MSM7557 is a single chip MSK modem with base band voice processor for cordless telephone.
The MSM7557 voice transmit block consists of high pass filter, compressor, pre-emphasis, limiter and splatter filter.
Voice receive block consists of Band pass filter, De-emphasis and Expander.
MSM7557 Maximum Ratings
|
Symbol |
Parameter |
Conditions |
Limits |
Unit |
|
VDD |
Power Supply Voltage |
Ta = 25°C Refer to GND |
_0.3 to 7 |
V |
|
VIA |
Analog Input Voltage *1 |
0.3 to VDD + 0.3 |
V | |
|
VID |
Digital Input Voltage *2 |
0.3 to VDD + 0.3 |
V | |
|
TSTG |
Storage Temperature |
- |
55 to +150 |
°C |
*2 : SD, EMP, DYN, SEC, RCK1, RCK2, BYP, BR, FDE, BIT, FPS, RVE, PDN, X2, ME, TVE
MSM7557 Features
• Available to transmit modem signal and also transmit base band voice signal through wireless transmission path (0.3 kHz to 3.4 kHz)
• Built-in compandor circuit
• Upper limit of voice band (3306 Hz/3400 Hz/3500 Hz) is selectable
• Modem bit rate (2400/1200 bps) is selectable
• Transmit function and receive function operate separately
• Emphasis mode selectable
• Built-in bit synchronous detector and frame synchronous detector
• Built-in limiter level generator and external limit voltage input
• Dynamic range selectable
• Built-in crystal oscillator circuit
• Wide range power supply voltage (2.7V ~ 5.5V)
• Package :56-pin plastic QFP (QFP56-P-910-0.65-2K) (Product name : MSM7557GS-2K)
MSM7557 Connection Diagram
MSM7557
PDF/DataSheet Download
- Datasheet: MSM7557
- File Size: 148802 KB
- Manufacturer: OKI
- Click here to Download
- ·MSM10S0000
- OKI [OKI electronic componets]
- 0.8um CMOS
- 48604 KB
- ·MSM13Q
- OKI [OKI electronic componets]
- 0.35 レm Sea of Gates Arrays
- 232838 KB
- ·MSM14Q000
- OKI [OKI electronic componets]
- 0.35 レm Sea of Gates Arrays
- 232838 KB
- ·MSM27C1602CZ
- OKI [OKI electronic componets]
- 1,048,576-Word x 16-Bit or 2,097,152-Word x 8-Bit One Time PROM
- 111107 KB
- ·MSM27C1652CZ
- OKI [OKI electronic componets]
- 1,048,576-Word x 16-Bit or 2,097,152-Word x 8-Bit 8-Word x 16-Bit or 16-Word x 8-Bit Page Mode One Time PROM
- 93703 KB
- ·MSM27C1655CZ
- OKI [OKI electronic componets]
- 524,288-Double Word x 32-Bit or 1,048,576-Word x 16-Bit 4-Double Word x 32-Bit or 8-Word x 16-Bit Page Mode One Time PROM
- 93258 KB
- ·MSM27C3202CZ
- OKI [OKI electronic componets]
- 2,097,152-Word x 16-Bit or 4,194,304-Word x 8-Bit One Time PROM
- 89388 KB
- ·MSM27C3252CZ
- OKI [OKI electronic componets]
- 2,097,152-Word x 16-Bit or 4,194,304-Word x 8-Bit 8-Word x 16-Bit or 16-Word x 8-Bit Page Mode One Time PROM
- 92532 KB
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The MSM7543 and MSM7544 are single-channel CODEC CMOS ICs for voice signals ranging from 300 to 3400 Hz. These devices contain filters for A/D and D/A conversion.Designed especially for a single-power supply and low-power applications, these MSM7543 are opti...
MSM7542
The MSM7541 and MSM7542 are single-channel CODEC CMOS ICs for voice signals ranging from 300 to 3400 Hz. These devices contain filters for A/D and D/A conversion.Designed especially for a single-power supply and low-power applications, these MSM7542 are opti...
MSM7541
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