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3.3 SCC Data Encoding Methods
The SCC provides four different data encoding methods, selected by bits D6 and
D5 in WR10. These four include NRZ, NRZI, FM1 and FM0. The SCC also
features a digital phase-locked loop (DPLL) that can be programmed to operate in
NRZI or FM mode. Also, the SCC contains two features for diagnostic purposes,
controlled by bits in WR14. They are local loopback and auto echo.
For further information on these subjects or any others involving the SCC, contact
the manufacturer of the SCC being used for a complete technical manual.
Quatech Inc., MPA-200/300 Manual 10