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参数资料
| 型号： | PCD50922H |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 无绳电话/电话 |
| 英文描述： | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:TVS06; No. of Contacts:42; Connector Shell Size:25; Connecting Termination:Crimp; Circular Shell Style:Straight Plug; Body Style:Straight |
| 中文描述： | TELECOM, CORDLESS, BASEBAND CIRCUIT, PQFP80 |
| 封装： | 12 X 12 MM, 1.40 MM HEIGHT, PLASTIC, SOT-315-1, LQFP-80 |
| 文件页数： | 10/16页 |
| 文件大小： | 91K |
| 代理商： | PCD50922H |
1998 Apr 27
10
Philips Semiconductors
Objective specification
Low cost; low power DECT baseband
controllers (ABC-PRO)
PCD509x2/zuu/v family
6
FUNCTIONAL DESCRIPTION
6.1
DECT baseband controller system
The PCD509x2 is a family of baseband controllers,
designed for use in Digital Enhanced Cordless
Telecommunications systems (DECT). The family is
designed for minimal component-count and minimal power
consumption for very long standby times. All baseband
controllers include an embedded 80C51 microcontroller
with on-chip memory, including an IrDA (Infrared Data
Association) compatible UART and I
2
C-bus. The Burst
Mode Logic performs the time-critical MAC layer functions
for applications in DECT handsets and base stations.
The implemented RF Interface is compatible with the
Philips Burst Mode Controller PCD504x. The ADPCM
transcoding is in compliance with the CCITT
Recommendation G.726. Also included is an on-chip
codec with receive and transmit filters, complying with
CCITT Recommendation G.712. Power-on-reset logic and
power management functions further reduce power
consumption and external components.
The chip is intended to support stand-alone systems only
(see Fig.3). There are no provisions to build clusters of
base stations. There are no provisions for external
controllers to exert control over the embedded 80C51.
There are no provisions for external controllers to have
direct access to the on-chip data memories. There are no
provisions to allow handsets to receive from two
unsynchronised base stations simultaneously, but a
handset can operate in a multi base station environment
as long as they are synchronous base stations.
Refer to the block diagram in Fig.1. The DECT Controller
consists of a number of functional blocks that operate
more or less autonomously and communicate with each
other via the System Data RAM (SDR). Blocks have
access to SDR via the Internal System Bus (ISB). The ISB
consists of an 8-bit data bus, a 10-bit address bus and a
number of bus-request/bus-grant signals. Access to the
ISB is controlled by ISB Bus Controller (IBC). The IBC
acknowledges bus requests on the basis of a priority
scheme. The embedded 80C51 controller is to be
programmed by the user. It must contain DECT software
from Man-Machine Interface (MMI) to the DECT protocols
TBC, CBC and DBC (refer to “Figures 10 to 13, in
Section 6 of prETS 300 175-3: June1996”). Software is
available from Philips Semiconductors.
Hardware state machines in the Burst Mode Logic (BML)
and the Speech Interface (SPI) execute the lower blocks in
the TBC, CBC and DBC. The 80C51 has control over the
BML and the SPI via tables in SDR. The BML saves serial
data, received via R_DATAP/M, in buffer areas in SDR.
The position of the buffers in SDR is fixed by the 80C51
software by means of the tables previously mentioned.
A-fields and B-fields are stored in separate buffers. In this
way, two traffic bearers, each with their private A-fields,
can share the same B-field buffer as is required in case of
bearer hand-over or local call. The DSP and Codec
support speech processing functions like analog-to-digital
and digital-to-analog conversion, filtering, ADPCM
encoding and decoding, 8-bit
μ
-law PCM to 14-bit linear
PCM conversion and its reverse, echo cancelling, tone
generation etc.
Fig.3 Block diagram examples of DECT systems with PCD509xy.
handbook, full pagewidth
MGM859
PCD50922
LINE
INTERFACE
(e.g. PCA1070)
a/b line
RADIO
CIRCUITS
handbook, full pagewidth
MGM860
PCD50912
MICROPHONE
EARPIECE
RADIO
CIRCUITS
a. Handset.
b. Base station.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PCD5092H | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DECT baseband controller |
| PCD5093 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DECT baseband controller |
| PCD5093H | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DECT baseband controller |
| PCD5094 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DECT baseband controller |
| PCD5094H | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:DECT baseband controller |
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