KX-TVM50BX, KX-TVM502X, KX-TVM524X, KX-TVM594X, KX-TVM296X - Panasonic PBX Service Manual (repair manual). Page 126

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Block Diagram No.2
McBSP1
McBSP0
Peripheral device control signal
IC153
DPT (ECO)
1/2
IC811
DSP
1/2
McBSP0
DPT Link signal
McBSP1
Selector
McBSP0
Call control signal
KX-TVM502 Block Diagram No.2
CN101
18.3.1. DSP (IC811)
The DSP has functions to compress and decompress voice data of voice mail units, generates and receives DTMF tones,
detects AGC, VOX and CPT, and controls the volume and playback speeds, etc. The number of installed channels is two per
DSP. Up to 3 DSPs (6 channels) at the maximum are controlled by the host CPU and iVDC (ASIC).
DSP Function
DSP
TI TMS320VC5409-80
Clock & MIPS
External Input 8.000MHz, Processing Speed: 80MIPS
Operating Voltage
I/O: 3.3V, DSP Core: 1.8V
Voice
Compression/Decompression
IMA-ADPCM 32kbps
AGC
Analog Type AGC, Variable Parameter
Echo Canceller
Tail Length 8ms, 16ms
VOX Detection
Adjustable Range of Sensitivity: -55dBm ~ -25dBm
Silence Detection
Adjustable Range of Sensitivity: -55dBm ~ -25dBm
TONE Detection
300Hz ~ 640Hz, 1000Hz ~ 1200Hz (for FAX CNG Tone)
[Call Progress Tone]
Busy Tone / Dial Tone / Ring Back Tone / Reorder Tone
Speech Endpoint Detection (Silence, Cyclic Tone, Continuance Tone)
[Voice Detection]
VOX or VAD
[FAX]
CNG Tone
DTMF Detection
0 - 9, *, #, A - D Detectable Range 40msec or more / Interdigit Pause 40msec
TONE Output
Including DTMF, Voluntary Frequency TONE Playback
VOLUME CONTROL
Recording Output Stage, Playback Output Stage for Gain Control with PBX.
+2dB ~ -8dB
Adjustable Playback Speed
Same Speed Rate ~ Double-Speed Rate
Number of Channels Installed 2ch/1chip
126
KX-TVM50BX
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