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STA400A Datasheet(PDF) 28 Page - STMicroelectronics

Part # STA400A
Description  XMRADIO SDARS CHANNEL DECODER
PDF  117 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA400A Datasheet(HTML) 28 Page - STMicroelectronics

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2.1 REGISTER MAP OVERVIEW
Table 3. QPSK Demodulator #1 (S1-Early)
Base Address: 00 - Address Range: 59 - 77
Relative
Address
(Hex)
Register
Name
WL
Type
Reset
Value
(Hex)
Comment
59
QPSK_DEMOD_EN
1
wr
01
QPSK Dem Enable Register
5A
QPSK_CTRL
8
wr
47
QPSK Dem Control Register
5B
PFDTHR
6
wr
14
Phase/Freq. Detector Threshold
5C
SYMFREQ0
8
wr
8B
Symbol Frequency (LSB)
5D
SYMFREQ1
8
wr
1A
5E
SYMFREQ2
8
wr
23
5F
SYMFREQ3
1
wr
00
Symbol Frequency (MSB)
60
IFFREQ0
8
wr
EC
Intermediate Frequency (LSB)
61
IFFREQ1
8
wr
C4
62
IFFREQ2
8
wr
4E
63
IFFREQ3
4
wr
FB
Intermediate Frequency (MSB)
64
ALFACAR
8
wr
17
Carrier Loop Filter Alpha Param.
65
BETACAR
8
wr
15
Carrier Loop Filter Beta Param.
66
ALFATIM
8
wr
07
Timing Loop Filter Alpha Param.
67
BETATIM
8
wr
0E
Timing Loop Filter Beta Param.
68
RAMPCTRL
7
wr
20
Ramp Control Register
69
AGC2BETA
3
wr
03
AGC2 Gain
6A
AGC2REF
8
wr
5A
AGC2 Reference
6B
AGC2INTG
8
wr
00
8MSB of AGC2 Loop Integrator
6C
TIMINTG
8
wr
00
8MSB of Timing Loop Integrator
6D
CARINTG
8
wr
00
8MSB of Carrier Loop Integrator
6E
CARFREQ0
8
r
--
Locked Carrier Frequency (LSB)
6F
CARFREQ1
8
r
--
70
CARFREQ2
8
r
--
71
CARFREQ3
4
r
--
Locked Carrier Frequency (MSB)
72
CN
8
r
--
C/N Esteem
73
FLAG
4
r
--
Demodulator Status
74
NULOFS_WIN
4
wr
07
Null Carrier Offset Window
75
NULOFS_DELTAF
8
wr
2B
Null Carrier Offset Delta Frequency
76
TIMLPF_CTRL
8
wr
90
Timing Loop Low Pass Filter Control
77
LOCKTHR
2
wr
02
Lock Detector Threshold



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