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| 型號(hào)： | MC68175 |
| 廠商： | Motorola, Inc. |
| 英文描述： | FLEXchip Decoder(FLEXchip譯碼器) |
| 中文描述： | FLEXchip解碼器（FLEXchip譯碼器） |
| 文件頁(yè)數(shù)： | 1/4頁(yè) |
| 文件大?。?/td> | 113K |
| 代理商： | MC68175 |
MOTOROLA
SEMICONDUCTOR PRODUCT INFORMATION
MC68175
Order this document by:
MC68175P/D, Rev. 1
1996 MOTOROLA, INC.
Product Preview
MC68175 FLEXchip IC
This document contains information on a product under development. Motorola reserves the right to change or discontinue this product without
notice.
FLEX protocol is a multi-speed, high-performance protocol adopted by leading service
providers worldwide as a de facto paging standard. FLEX protocol gives service providers
the increased capacity, added reliability, and enhanced pager battery performance they need
today. It also provides an upward migration path to the service provider that is completely
transparent to the end user.
The MC68175 FLEXchip IC is part of a total solution available from Motorola for providing
FLEX capabilities in a low-power, low-cost system. The FLEXchip simplifies implementation
of a FLEX paging device by interfacing with any of several off-the-shelf paging receivers,
such as the MC13150 or MC3374, and any of several off-the-shelf host microcontroller/
microprocessors. The primary function of the FLEXchip is to process information received
and demodulated from a radio paging channel, select messages addressed to the paging
device, and communicate the message information to the host. The host interprets the
message information in an appropriate manner (numeric, alphanumeric, binary, etc.) and
handles all the I/O activity. The FLEXchip IC also operates the paging receiver in an efficient
power consumption mode and enables the host to operate in a low power mode when
message information for the paging device is not being received.
Figure 1
FLEXchip IC Functional Block Diagram
76.8 kHz
Osc
Clock
Symbol Sync
Sync Correlator
De-Interleaver
Address
Comparator
Receiver
Control
Noise Detector
Internal Control
Unit
Error
Corrector
Local Msg Filter
SPI Buffer
SPI
Control/Status
Registers
External
Control
Unit
EXTS0
EXTS1
SYMCLK
XTAL
EXTAL
CLKOUT
S0–S7
V
dd
V
ss
TEST
RESET
LOBAT
READY
SPI
8
4
AA0813
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