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| 型號(hào)： | MC68177 |
| 廠商： | MOTOROLA INC |
| 元件分類： | 尋呼電路 |
| 英文描述： | FLEXchip Decoder(FLEXchip譯碼器) |
| 中文描述： | TELECOM, PAGING DECODER, PQFP32 |
| 封裝： | TQFP-32 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大小： | 180K |
| 代理商： | MC68177 |
PRELIMINARY
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
MC68177
MOTOROLA, INC. 1998
Advance Information
FLEXa DECODER IC
This document contains information on a new product. Specifications and information herein are subject to change without notice.
The MC68177 FLEX a IC simpliTes implementation of a FLEX paging device by interfacing
with any of several off-the-shelf paging receivers and any of several off-the-shelf host
microcontroller/microprocessors. Its primary function is to process information received and
demodulated from a FLEX radio paging channel, select messages addressed to the paging device,
and communicate the message information to the host. The MC68177 also operates the paging
receiver in an efTcient power consumption mode and enables the host to operate in a low-power
mode when monitoring a single channel for message information.
The block diagram shown below illustrates the major components and functions of the MC68177
IC.
S1-S7
7
S1-S7
Figure 1
Block Diagram
EXTS0
EXTS1
SYMCLK
XTAL
EXTAL
CLKOUT
VDD
VSS
TEST3
RESET
LOBAT
READY
SPI
4
OSCPD
2
2
TEST2
S0/IFIN
Receiver Control
Demodulator &
Data Slicer
Symbol Sync
Sync
Correlator
76.8 kHz
or 160 kHz
Oscillator
Clock
Generator
De-interleaver
Error Corrector
Local Message
Filter
SPI Buffer
SPI
Control/Status
Registers
Address
Comparator/
Correlator
External
Control
Unit
Noise Detector
Internal
Control
Unit
S0
IFIN
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