參數(shù)資料
型號(hào)： IC_SS
文件頁(yè)數(shù)： 2/36頁(yè)
文件大小： 480K
代理商： IC_SS
Modem Operation
A block diagram of the modem is shown on page 1. It in-
cludes four major elements:
1. Coupling network to the power line.
2. Analog filter, gain control, and A/D.
3. Digital filter and control logic.
4. System controller.
Each of these is described in more detail below.
COUPLING NETWORK
The coupling network provides protection against the AC
power line 60 Hz/50 Hz energy, and initial filtering of power
line noise. It provides a match of impedances to the power
line, and also contains a power amplification stage for the
transmitter. A variety of coupling networks are available
from Cyplex, suitable for:
220 VAC ungrounded operation (meters and 220 VAC
load control).
110 VAC/neutral operation (110 VAC load control).
Three-terminal operation (intended for gateways and
master units which must communicate with both of the
above).
The coupling networks require
g
5V power, ground, and in-
terface to the analog section of the system.
ICSS1001DController
The controller provides the adaptive frequency hopping, the
user interface, and link layer protocol.
ICSS1002DDigital Chip
The digital section of the system provides additional receive
filtering and received signal detection functions. It generates
the necessary internal clocks and interface signals to the
microcontroller.
ICSS1003DAnalog Chip
The analog section of the system provides receive signal
filtering, and also generates the transmit carrier based on
control and clock signals from the digital section.
Connection Diagrams
TL/DD/11727–2
Wide Molded Small Outline Package (WM)
Order Number ICSS1001WM
NS Package Number M28B
TL/DD/11727–4
Plastic Leaded Chip Carrier (PLCC)
Order Number ICSS1003V
NS Package Number V44A
TL/DD/11727–28
Plastic Quad Flatpak (PQFP)
Order Number ICSS1003VGZ
NS Package Number VGZ44A
2
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IC41C16100A-50T 1M x 16 (16-MBIT) DYNAMIC RAM WITH EDO PAGE MODE
IC41C16100A-60K 1M x 16 (16-MBIT) DYNAMIC RAM WITH EDO PAGE MODE
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