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參數(shù)資料
| 型號： | MSM7502 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 元件分類： | Codec |
| 英文描述： | Multi-Function PCM CODEC |
| 中文描述： | 多功能的PCM編解碼器 |
| 文件頁數(shù)： | 1/35頁 |
| 文件大小： | 196K |
| 代理商： | MSM7502 |
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Semiconductor
MSM7502
1/35
Multi-Function PCM CODEC
GENERAL DESCRIPTION
The MSM7502, developed especially for low-power and multi-function applications in touch-
tone telephone sets and digital telephone terminals of digital PBXs, is a single +5 V power supply
CODEC device. The device consists of the analog speech paths directly connectable to a handset,
the calling circuit directly connectable to a piezosounder, the push-button key scanning interface
between push buttons and control processors, the dial tone generator, the
m
-law/A-law CODEC,
and the processor interface. The functions can be controlled via 8-bit data bus.
For the CODEC of the MSM7502, an MSM7543 is used as a core CODEC, so the MSM7502
provides the available bit clock range wider than the family product MSM6895.
In addition, the MSM7502 performs the greater key interface function and offers the upgraded
side-tone level, receive level, and speaker pre-amplifier output level.
FEATURES
Single +5 V Power Supply
Low Power Dissipation
Power ON Mode
Power Saving Mode
In compliance with ITU-T’s companding law
Transmission clocks
: 30 mW Typ. 53 mW Max.
: 2 mW Typ. 5 mW Max.
: 64, 128, 256, 512, 1024, 2048 kHz
96, 192, 384, 768, 1536, 1544 kHz
Built-in PLL
Built-in Reference Voltage Supply
Calling Tone Interval
Calling Tone Combination
Calling Tone Volume
Ringing Tone Interval
Ringing Tone Frequency
Ringing Tone Level
Built-in PB Tone Generator
Built-in Speech path Control Switches
General Latch Output for External Control
Watch-dog Timer
Key Scanning I/O
Output
Input
Direct Connection to Handset
Built-in Pre-amplifier for Loud-speaker
Hand-free Interface
m
-law/A-law Switchable CODEC
LCD Deflection Angle Voltage
Package :
80-pin plastic QFP (QFP80-P-1420-0.80-BK)
: Controlled by processor
: Controlled by processor, 6 modes
: Controlled by processor, 4 modes
: Controlled by processor
: Controlled by processor, 6 modes
: Controlled by processor, 4 levels
: 2 bits
: 500 ms
: 8 bits
: 8 bits
: 1.2 k
W
driving available
: Controlled by processor, 8 levels
(Product name : MSM7502GS-BK)
E2U0023-28-81
This version: Aug. 1998
Previous version: Nov. 1996
相關(guān)PDF資料 |
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| MSM7508 | Single Rail CODEC |
| MSM7508B | Single Rail CODEC |
| MSM7509B | Single Rail CODEC |
| MSM7510 | Power Outlet Strip; Supply Voltage:127VAC; No. of Outlets:24; Cable Length:12ft; Electrical Outlet Style:NEMA 5-20R ; Approval Bodies:UL RoHS Compliant: No |
| MSM7512 | 1200 bps Half Duplex FSK Modem - ITU-T V.23 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MSM7503 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Multi-Function PCM CODEC |
| MSM7503GS-BK | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Multi-Function PCM CODEC |
| MSM7507-01 | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Rail CODEC |
| MSM7507-01GS-K | 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:Single Rail CODEC |
| MSM7507-01MS-K | 制造商:ROHM Semiconductor 功能描述: |
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