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ST75C530 Datasheet(PDF) 39 Page - STMicroelectronics

Part # ST75C530
Description  SUPER INTEGRATED DEVICESWITH DSP, AFE & MEMORIES FORTELEPHONY,MODEM, FAXOVERINTERNET& POTSLINES
PDF  84 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST75C530 Datasheet(HTML) 39 Page - STMicroelectronics

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TDRC
Tone Detector Read Coefficient
TDRC
Opcode:
1A
000
11010
Synopsis
TDRC Read one Coefficient of the selected Tone Detector Cell.
Parameters
Field
Byte
Pos.
Value
Definition
TD_CELL
1
4..0
0..13
Tone detector cell number
TD_C_ADDR
2
7..0
0..B
10
20
30
(1)
40
(1)
Biquad coefficient
Energy coefficient
Static level
Energy coefficient for relative comparison
Gain for relative comparison
The command answer is : Low Byte of Coefficient followed by High Byte of Coefficient.
Note 1 :
Value 30 and 40 of byte 2 are available only for secondary tone detector.
TDRW
Tone Detector Read Wiring
TDRW
Opcode:
1B
000
11011
Synopsis
TDRW Read Wiring of the selected Tone Detector Cell.
Parameters
Field
Byte
Pos.
Value
Definition
TD_CELL
1
4..0
0..13
Tone detector cell number
For primary tone detector
TD_W_ADDR
2
0
0
1
Other
Biquad and energy input
Comparator inputs
Reserved
The command answer is :
a) If TD_W_ADDR = 0 :
- First Byte is the Node Number of the Signal connected to Biquadratic Filter input.
- Second Byte is the Node Number of the Signal connected to the Energy estimator input.
b) if TD_W_ADDR = 1 :
- First Byte is the Node Number of the Signal connected to Comparator Negative input.
- Second Byte is the Node Number of the Signal connectedto the Comparator Positive input.
For secondary tone detector TD_W_ADDR is not defined.
- First byte is 00 if relative comparison is not mandatory,
First byte is 01 if relative comparison is mandatory.
- Second byte is for the configuration of the secondary tone detector :
C0 configuration 1+1 of secondary tone detectors,
E0 configuration 1+1+2,
F0 configuration 1+1+1.
VII - COMMAND SET DESCRIPTION (continued)
ST75C530 - ST75C540
39/84



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