CS3810 Amphion Semiconductor Ltd., CS3810 Datasheet - Page 6

• Manufacturer Part Number: CS3810
• Description: 32 Qam Demodulator
• Manufacturer: Amphion Semiconductor Ltd.

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