Receiver Description
STEL-2176
22
User Manual
Bank 0 - QAM Demodulator Registers Universal
Registers (Group 2)
The QAM Demodulator Registers Universal Registers
are divided into 6 sub-groups of registers. Each sub-
group has two sets of registers: a Read/Write set which
is used for control purposes, and a Read-only set for
monitoring purposes. The sub-groups are:
Sub-Group
Name
Read/Write
Register Addresses
Read-only
Register Addresses
A
Control, address range
00
H
to 0E
H
40
H
to 45
H
B
DDC, Nyquist, AGC, and AFC address range
0F
H
to 1B
H
46
H
to 52
H
C
Timing, address range
1C
H
to 20
H
53
H
to 5B
H
D
FFE, address range
21
H
to 24
H
5C
H
to 5F
H
and 6B
H
to 9A
H
E
FBE, address range
25
H
to 26
H
9B
H
to B2
H
F
PLL, address range
27
H
to 3F
H
60
H
to 6A
H
Bank 0, Group 2, Sub-Group 'A' - Control Address Range Registers
Table 8. Group 2, Sub-Group 'A' Read/Write Registers
Address
7
6
5
4
3
2
1
0
00
H
QAM_Enable QAM_SoftR
esetEnable
Pwrlvl_corre
ctEn
Decimate_Gai
nSel
Factory Defined Value - A
H
01
H
Factory Defined Value - 19
H
02
H
Factory Defined Value - 44
H
03
H
Factory Defined Value - 19
H
04
H
CMA1_Ksym
05
H
AFC1_Ksym
06
H
CMA2_Ksym
07
H
AFC2_Ksym
08
H
Factory Defined Value - 64
H
09
H
Factory Defined Value - 00
H
0A
H
Factory Defined Value - 00
H
0B
H
Factory Defined Value - 64
H
0C
H
Factory Defined Value - 40
H
= 16 QAM, 53
H
= 64 QAM, or 87
H
= 256 QAM
0D
H
Factory Defined Value - 33
H
= 16 QAM, 37
H
= 64 QAM, or 54
H
= 256 QAM
0E
H
Factory Defined Value - 5F
H
= 16 QAM, 76
H
= 64 QAM, or A4
H
= 256 QAM
Table 9. Sub-Group 'A' Read-Only Registers
Address
7
6
5
4
3
2
1
0
40
H
SymbolCnt[1:0]
AcquisitionLock
AcquisitionFail
State
41
H
SymbolCnt[9:2]
42
H
SymbolKCnt
43
H
AcquireCnt
44
H
ErrPwr
45
H
JitPwr
