L64704 LSI Logic Corporation, L64704 Datasheet - Page 165
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L64704
Manufacturer Part Number
L64704
Description
Satellite Decoder Technical Manual 5/97
Manufacturer
LSI Logic Corporation
Datasheet
1.L64704.pdf
(220 pages)
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Figure 7.20
Inverting Sync
Words in
Descrambler
7.5
FEC Module
Software Reset
Inverting
The L64704 resets the internal datapath and control modules for the
FEC portion of the device when you set the FEC_Reset bit (Group 4,
APR 36) 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_Reset bit is set, the L64704 resets the FEC processing unit and
state machines to their initial states. The following operations occur when
FEC_Reset is asserted:
FEC Module Software Reset
Sync
Byte
Internal datapath and control modules reset
Group 4 registers unaffected by RESET
Group 3 UEC and CEC counters reset
DVALIDOUT pin set LOW
FSTARTOUT pin set LOW
ERROROUT pin set HIGH
204 Bytes
8 * 204 Bytes
Sync
Byte
Inverting
Sync
Byte
7-21
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