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參數(shù)資料
| 型號： | PCD5095H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | DECT baseband controller |
| 中文描述： | TELECOM, CORDLESS, BASEBAND CIRCUIT, PQFP100 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 83K |
| 代理商： | PCD5095H |
1997 Nov 19
9
Philips Semiconductors
Objective specification
DECT baseband controller
PCD5095
6
FUNCTIONAL DESCRIPTION
The PCD509x is a family of single-chip controllers,
designed for use in Digital Enhanced Cordless
Telecommunications systems (DECT). The family is
designed for minimum component-count and minimum
power consumption. All controllers include an embedded
80C51 microcontroller with on-chip memory and I
2
C-bus
interface. The Philips DECT RF interface is implemented.
The Burst Mode Logic (BML) performs the time-critical
MAC layer functions for applications in DECT handsets
and base stations. The ADPCM transcoding is in
compliance with the CCITT recommendation G.721 and
includes receive and transmit filters.
The PCD5095 is designed for business systems, PABX
and WLL. Two modes can be selected: bidirectional
conversion of three ADPCM channels based on linear
PCM format, the second mode copies four ADPCM
samples, without data processing, into two IOM
-2 data
buffers and vice versa. In both modes the DSP controls
the bidirectional data flow from the radio interface and the
IOM
-2 interface. The 80C51 controls the DECT protocol
and the IOM
-2 interface.
The data flow between radio, DSP and IOM
-2 is
described in the “PCD5095 DSP user manual” Basically
the System Data RAM (SDR), the shared memory with
inbound and outbound speech buffers, is the interface to
the DSP and to the radio. Depending on the selected
mode the DSP processes the data stored in the SDR. The
speech buffers are 40 bytes long and each buffer can
hold 80 ADPCM-coded speech samples.
Fig.3 PCD5095 for PABX.
handbook, full pagewidth
HANDSET
(PCD5091)
RF
PCD5095
DECT CORDLESS PABX
IOM-2
INTERFACE
RF
PABX
MGL189
HANDSET
(PCD5091)
RF
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| PCD5114P | 制造商:NXP Semiconductors 功能描述: |
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| PCD-5-SD | 制造商:COOPER BUSSMANN 功能描述:Fuse Subminiature 5A 125V Fast 2-Pin Radial Through Hole |
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