L64767 LSI Logic Corporation, L64767 Datasheet - Page 2

• Manufacturer Part Number: L64767
• Description: Smatv Qam Encoder
• Manufacturer: LSI Logic Corporation

Figure 2. L64767 Functional Blocks
Data In
2
I
8
CLK
Input
Sync
8
Circular
Buffer
FIFO
The L64767 integrates CoreWare
the specifications described in the document DTVB1190/DTVC37,
Revision 3 .
The CoreWare processing elements of the L64767 comprise the data
processing chain of the device and include:
L64767 SMATV QAM Encoder
8
Input synchronizer
Circular FIFO buffer
Sync/error flag inserter and scrambler
Reed-Solomon encoder
Convolutional interleaver
Bytes to m-tuple converter
Differential encoder and QAM mapper
Nyquist filter
Sync/Error
Scrambler
Inserter
Flag
and
PLL
Figure 2
8
Global Control and Synchronization - Start/Stop Signals Generation
Solomon
Encoder
Reed-
DATA[7:0] DTACK_N
shows the L64767’s major functional blocks.
8
Convolutional
Microprocessor Interface
Interleaver
®
READ
processing elements that conform to
8
m-tuple
CS_N
Bytes
to
m
AS_N
Encoder
Mapper
QAM
Diff.
and
4
4
Test Scan Chain
Nyquist
Filter
OCLK
10-bit
10-bit
Q
MD97.3
I