Read Panasonic KX-TDA0490XJ / KX-TDA0490X Service Manual online
8.4. PBX INTERFACE BLOCK
Configuration :
DPRAM (IC300) etc.
Function :
DPRAM (IC300)
Be-directional memory for communication between CPU (SH4) and mainboard of PBX.
Be-directional memory for communication between CPU (SH4) and mainboard of PBX.
8.5. DSP BLOCK (SUB BOARD)
Configuration :
DSP (IC100), SDRAM (IC107), PHY (IC202), PLD (IC201), DSP system clock 10MHz (X201), Ethernet clock 50MHz (X200),
RJ45 integrated magnetics connector (CN201).
RJ45 integrated magnetics connector (CN201).
Function :
DSP (IC100)_sub board)
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• Power Supply : +1.2V and +3.3V.
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• Package : 484-ball PFBGA.
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• Operating Clock : 10MHz.
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• Supported Voice Codec Standards : G.711, G.729A, G.723.1.
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• Echo Cancellation.
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• RTP/RTCP.
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• Fax Tones Detection and Generation.
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• DTMF Detection and Generation.
SDRAM (IC107_sub board)
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• Execution Area of DSP Firmware.
PHY (IC202_sub board)
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• Power Supply : +2.5V or +3.3V.
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• Package : 64-pin TQFP.
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• 10BASE-T/100BASE-TX IEEE 802.3u fast Ethernet transceiver.
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• Mll and RMII configurable.
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• Controls the LED of LINK and DATA.
PLD (IC201)
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• Switching Control between 10BASE and 100BASE.
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KX-TDA0490XJ / KX-TDA0490X
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