L64704 LSI Logic Corporation, L64704 Datasheet - Page 84

• Manufacturer Part Number: L64704
• Description: Satellite Decoder Technical Manual 5/97
• Manufacturer: LSI Logic Corporation

3-52
DEMOD_RST QPSK Demodulator Software Reset
FEC_RST
L64704 Registers
The L64704 resets the internal datapath and control
modules for the QPSK Demodulator portion of the device
when you set the DEMOD_RST bit to 1. The FEC
decoder module is not affected. You do not need to set
the bit back to 0 to complete the reset. The L64704
issues a single reset pulse each time the microcontroller
writes a one to this bit. When the DEMOD_RST bit is set,
the L64704 resets the demodulator processing unit and
state machines to their initial states.
FEC Decoder Software Reset
The L64704 resets the internal datapath and control
modules for the FEC portion of the device when you set
the FEC_RST bit to 1. The demodulator module is not
affected. You do not need to set the bit back to 0 to
complete the reset. The L64704 issues a single reset
pulse each time the microcontroller writes a one to this
bit. When the FEC_RST bit is set, the L64704 resets the
FEC processing unit and state machines to their initial
states.
XCTR
0
1
Demod_Reset
0
1
FEC_Reset
0
1
Definition
Corresponding Output Pin = VSS
Corresponding Output Pin = VDD
Definition
No Reset
L64704 Issues a Demodulator Reset
Definition
No Reset
L64704 Issues an FEC Reset
1
0