CS3810 Datasheet, PDF (6/12 Pages) List of Unclassifed Manufacturers – 32 QAM Demodulator

CS3810 32 QAM Demodulator
Table 1: CS3810 32 QAM Demodulator Interface Signal Descriptions
Name
I/O
Width
Description
TEST DATA
BLLSTRB
Output
BLLIQ
BLLQI
MAPI
MAPQ
MapStrb
MapTest
Output
Output
Input
Input
Input
Input
MICROPROCESSOR INTERFACE
DATA
Tri-state
ADDR
Input
ALE
Input
CSB
Input
WRB
Input
OEB
Input
1
BLL output sample strobe, one cycle pulse every two clock cycles, indi-
cating the peak or transition samples after BLL lock is achieved
1: peak sample
0: transition sample
11
BLL output sample I, two's complement format
11
BLL output sample Q, two's complement format
4
TCM decoder test input
4
TCM decoder test input
1
Active strobe signal used to sample MAPI and MAPQ
1
Static signal, when asserted MAPI and MAPQ are sampled otherwise
the demodulated data is decoded as normal
16
16-bit data bus
5
5-bit address bus
1
Address latch enable
1
Chip select, level sensitive and active LOW
1
Write/Read control signal
0: Write
1: Read
1
Output enable, level sensitive and active LOW.
The demodulator drives the data bus only when both CSB and OEB are
active
6