RFX144V24-S23 and RFX96V24-S23 Modem Designer’s Guide
1070
4-3
Table 4-1. Modem DSP RAM Access Codes
No.
1
Function
SBRAMx
BRx
CRx
IOx
AREXx
ADDx
Read
Reg. No.4
1a
Received Signal Sample (Pre-AGC)
0
0
1
0
0
55
2,3
1b
Received Signal Sample (Post-AGC)
0
0
0
0
0
15
2,3
2
Received Signal Sample - 8-bit Audio Mode
(Post-AGC)
0
0
0
0
0
A0
0
3
Average Energy
0
0
0
0
0
14
2,3
4
AGC Gain Word
0
0
1
0
0
15
2,3
5
AGC Slew Rate Word
0
0
0
0
0
95
0,1
6
IIA Tone 1 Frequency
0
0
1
0
0
21
2,3
XIA Tone 1 Frequency
0
0
1
0
0
1A
2,3
7
IIA Tone 1 Transmit Output Level
0
0
0
0
0
22
2,3
XIA Tone 1 Transmit Output Level
0
0
0
0
0
1B
2,3
8
IIA Tone 2 Frequency
0
0
1
0
0
22
2,3
XIA Tone 2 Frequency
0
0
1
0
0
1B
2,3
9
IIA Tone 2 Transmit Output Level
0
0
0
0
0
23
2,3
XIA Tone 2 Transmit Output Level
0
0
0
0
0
1C
2,3
10
Transmit Output Level/Scaling
0
0
0
0
0
21
2,3
11
Equalizer Tap Coefficients
0
1
1
0
1
50 - 7F
0,1,2,3
12
Rotated Equalizer Output, Eye Pattern
0
1
1
0
0
17
0,1,2,3
13
Decision Points, Ideal
0
1
0
0
0
17
0,1,2,3
14
Error Vector
0
1
1
0
0
1D
0,1,2,3
15
Rotation Angle
0
1
1
0
0
8C
0,1
16
Frequency Correction
0
1
1
0
0
18
2,3
17
Eye Quality Monitor (EQM), Hard Decision
0
1
1
0
0
0D
2,3
18
Eye Quality Monitor (EQM), TCM Min. Metric
3
0
1
1
0
0
B8
0,1
19
RLSD Turn-on Threshold
0
0
1
0
0
37
2,3
20
RLSD Turn-off Threshold
0
0
1
0
0
B7
0,1
21
Receiver Sensitivity, MAXG
0
0
1
0
0
24
2,3
29
Minimum On Time (DTMF)
0
0
1
0
0
1F
2,3
30
Minimum Off Time (DTMF)
0
0
0
0
0
1F
2,3
31
Minimum Cycle Time (DTMF)
0
0
0
0
0
9F
0,1
32
Maximum Dropout Time (DTMF)
0
0
1
0
0
9F
0,1
33
Maximum Speech Energy (DTMF)
0
0
1
0
0
1E
2,3
34
Frequency Deviation, Low Group (DTMF)
0
0
0
0
0
1D
2,3
35
Frequency Deviation, High Group (DTMF)
0
0
1
0
0
1D
2,3
36
Negative Twist Control (DTMF)
0
0
0
0
0
1E
2,3
37
Positive Twist Control (DTMF)
0
0
0
0
0
9E
0,1
38
Maximum Energy Hit Time (DTMF)
0
0
1
0
0
A3
0,1
39
Number of Additional Flags, NFLAG (HDLC)
0
0
1
0
0
85
0,1
40
Transmitter Rate Sequence Pattern
3
0
0
0
0
0
6B
2,3
41
Receiver Rate Sequence Pattern
3
0
0
1
0
0
9A
0,1
42
FR1 Tone Detector Coefficients
0
0
1
0
0
25-2A
2,3
FR1 Tone Detector Coefficients
0
0
1
0
0
A5-AA
0,1
43
FR2 Tone Detector Coefficients
0
0
1
0
0
2B-30
2,3
FR2 Tone Detector Coefficients
0
0
1
0
0
AB-B0
0,1
44
FR3 Tone Detector Coefficients
0
0
1
0
0
31-36
2,3
FR3 Tone Detector Coefficients
0
0
1
0
0
B1-B6
0,1
47
Tone Detector Threshold
0
0
0
0
0
9D
0,1
48
Maximum Samples per Ring Frequency Period
0
0
0
0
0
53
2,3
49
Minimum Samples per Ring Frequency Period
0
0
0
0
0
52
2,3
50
Sleep Mode Enable
0
0
0
1
0
3E
0,1
51
V.23 Receive Compromise Equalizer Taps
0
0
1
0
1
18-4F
2,3
52
V.23 RTS to CTS Turn Off Transition Time
0
0
1
0
1
DD
0,1
53
V.23 RTS to CTS Turn On Transition Time
0
0
1
0
1
DE
0,1
54
V.23 Number of Bits (Caller ID only)
0
0
1
0
1
EB
0,1
Summary of Contents for RFX144V24-S23
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