Document
Technical Data Sheet Features
SSC P485 PL Transceiver IC
4MHZ
1 2 3 4 5 6 7 8 9 10
20 19 18 17
VSSD TP0 VDDA SI C1 C2 SO VSSA RST* TS*
• • • • • •
Enables low-cost networking products Spread Spectrum Carrier™ communication technology 9600 baud data rate Simple interface Single +5 Volt power supply requirement 20 pin SOIC package
NC VSSD XIN XOUT VDDD ILD DI RO WL
SSC P485
16 15 14 13 12 11
Introduction
The Intellon SSC P485 PL Transceiver IC is a highly integrated spread spectrum communication transceiver for implementing low-cost networking products. The SSC P485 contains a Spread Spectrum Carrier™ (SSC) transceiver, signal conditioning circuitry, and a simple host interface. A minimum of external circuitry is required to connect the SSC P485 to the DC power line, twisted pair cable, or other communication medium. The inherent reliability of SSC signaling technology provides substantial improvement in network and communication performance over other low-cost communication methods. The SSC P485 is the ideal basic communications element for a wide variety of low-cost networking applications.
SSC P485 Block Diagram
RST* ILD RO
RX Interface Logic Data Decode Logic Tracking & Data Extraction Logic
WL
Summation Encoder Binary Shift Register
C2 C1
Comp Amp
SI SO
DI
TX Interface Logic
Waveform Generator
DAC
Buf
4 MHz XIN XOUT
Clock Circuit TS Control
TS*
July 1998
Revision 5 24000828
ADVANCE INFORMATION
SSC P485 PL Transceiver IC
Absolute Maximum Ratings (1)
Symbol
VDDMAX VIN TSTG TL
Parameter
DC Supply Voltage Input Voltage at any Pin Storage Temperature Lead Temperature (Soldering, 10 seconds)
Value
-0.3 to 7.0 VSS-0.3 to VDD+0.3 -65 to +150 300
Unit
V V °C °C
Notes: 1. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur.
Recommended Operating Conditions
Symbol
VDD FOSC TA
Parameter
DC Supply Voltage Oscillator Frequency Operating Temperature Humidity (non-condensing)
Min
4.5 -40
Typical
5.0 12 ± 0.05% +25
Max
5.5 +85 95
Unit
V MHz °C %
Electrical Characteristics
Conditions: VDD = 4.5 to 5.5 V T= -40 to +85°C Symbol
VOH VOL VIH VIL IIL vSO IDD
Parameter
Minimum High-level Output Voltage Maximum Low-level Output Voltage (1) Minimum High-level Input Voltage Maximum Low-level Input Voltage Maximum Input Leakage Current SSC Signal Output Voltage (2) Total Power Supply Current
Min
2.4 2.0
Typical
Max
0.4 0.8 ±10
Units
V V V V µA VP-P mA
4 15
Notes: 1. TS* pin IOL = 4 mA, all other outputs IOL = 2 mA 2. ZL = 2K Ω || 10 pF
July 1998
2
Revision 5 24000828
ADVANCE INFORMATION
SSC P485 PL Transceiver IC
SSC P485 Pin Assignments
Pin 1 2 3 4 5 6 7 Mnemonic 4MHZ NC VSSD XIN XOUT VDDD ILD Name 4 MHz Clock Out No Connect Digital Ground Crystal Input Crystal Output Digital Supply Idle Line Detect Description 4 MHz clock output available for host microcontroller. Digital ground reference. Connected to external crystal to excite the IC’s internal oscillator and digital clock. Connected t.