Panasonic KX-TDA6181X Service Manual ▷ View online
7.1.2. Time Slot Configuration
PCM data of an arbitrary stream, 0 - 15 (1 stream equals 128 time slots), on H.100 bus can be switched to an arbitrary local
highway (64 time slots) using a local TSW.
An example of time slot configuration of a local highway in ELCOT16 is shown below.
highway (64 time slots) using a local TSW.
An example of time slot configuration of a local highway in ELCOT16 is shown below.
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7.1.3. IC3 (ASIC)
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• EC bus interface
16bit/8MHz two-way address data multiplex self-bus.
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• CT bus interface
Supports eight 8.192MHz highways (128 time slots).
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• Local bus Interface
SH-1CPU by RENESAS Ltd. compatible bus with 8-bit data and 13bit address.
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• Local Highway Interface
Packs 2.048, 4.096, 8.192 MHz highway (Max.64 timeslot).
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• Local TSW
Timeslot switch between CT bus (1024ch) and local highway (64ch).
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• Local Gain Control
Gain control of the local highway up-down 64ch by 1dB/step randomly.
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• PT Interface
Selects the APT/DPT interface per port.
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• CODEC interface
A dedicated interface consisting of 4 Infineon PEB2466 chips for enabling the circuit controls.
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• GPIO Interface
A parallel interface that can be set in random interactively.
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• GPIO interface
Parallel interface that is arbitrarily programmable bidirectionally.
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7.2. DESCRIPTION OF FUNCTIONS AND CIRCUITS
7.2.1. Dial Pulse Signal Transmission
Transmits 10pps/20pps dial pulse by a open/close action between Tip and Ring with Photo MOS relay.
The make width, break width and inter digital width for 10pps/20pps can be set respectively.
When making, 37pin (DIAL [0]) of IC6 becomes Low level, and PL2 turns ON. When breaking, 37pin (DIAL [0]) of IC6 becomes
High level, and PL2 turns OFF.
It provides the SHUNT control function for the stabilization of line power depending on the destination. Turning ON PC5 when
transmitting pulse reduces the impedance at making, and stabilizes the line power.
The make width, break width and inter digital width for 10pps/20pps can be set respectively.
When making, 37pin (DIAL [0]) of IC6 becomes Low level, and PL2 turns ON. When breaking, 37pin (DIAL [0]) of IC6 becomes
High level, and PL2 turns OFF.
It provides the SHUNT control function for the stabilization of line power depending on the destination. Turning ON PC5 when
transmitting pulse reduces the impedance at making, and stabilizes the line power.
7.2.2. Circuit For Line Acquisition
Making 37pin (DIAL[0]) of IC6 Low level, the photo MOS relay (PL2) turns ON and the line is acquired.
It is used in common as Dial Pulse transmitting circuit.
DC Loop Path:
It is used in common as Dial Pulse transmitting circuit.
DC Loop Path:
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• Ring→L3→L2→RL1→J5→D2→PL2→Q6(C-E)→R5→R80→D2→RL1→J3→L1→L4→J7→Tip
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• Tip→J7→L4→L1→J3→RL1→D2→PL2→Q6(C-E)→R5→R80→D2→J5→RL1→L2→L3→Ring
7.2.3. DTMF Signal Transmission
This transmits the DTMF signal on the highway timeslot. The different DTMF signals can be transmitted to the optional ports at the
same time.
They are transmitted to the line through CODEC.
same time.
They are transmitted to the line through CODEC.
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KX-TDA6181X
7.2.4. Bell Signal Detection
During on-hook, transmitting the bell signal to the AC loop in the CR series circuits (C2 and R2) detects the current by Photo
Coupler (PC1,2), and it determines the presence of a bell signal. Software performs the operation for recognition and determination
of a pattern of bell signals.
Bell Loop Path:
Coupler (PC1,2), and it determines the presence of a bell signal. Software performs the operation for recognition and determination
of a pattern of bell signals.
Bell Loop Path:
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• Ring→L3→L2→RL1→R50→PC1(1-2)→C2→R2→J9→RL1→J3→L1→L4→J7→Tip
In this path, PC1 4-pin converts from High to Low, and a bell signal is detected.
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• Tip→J7→L4→L1→J3→RL1→J9→R2→C2→PC2(1-2)→R50→RL1→L2→L3→Ring
In this path, PC2 4-pin converts from High to Low, and a bell signal is detected.
7.2.5. DTMF Signal Detection
This is provided on the CALLER ID detection card (CID8) and CALLER ID/PAYTONE detection card (CID/PAY8) of the option
cards.
cards.
7.2.6. Polarity Reversal Detection
Configured by the photo couplers (PC1,PC2) which enables current detection in either the Tip
→ Ring or Ring → Tip directions.
(PC2 is used in common as the bell detection photo coupler). Using Software, it stores the current direction (the detected photo
coupler) of the connected trunk and adjusts the direction of the current flow detection. (the detected photo coupler changes).
When the current flows in the direction of Ring to Tip, PC1 4-pin is Low and PC2 4-pin is High.
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coupler) of the connected trunk and adjusts the direction of the current flow detection. (the detected photo coupler changes).
When the current flows in the direction of Ring to Tip, PC1 4-pin is Low and PC2 4-pin is High.
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• Ring→L3→L2→RL1→R50→PC1(1-2)→J5→D2→PL2→Q6(C-E)→R5→R80→D2→RL1→J3→L1→L4→J7→Tip
When the current direction (polarity) is reversed from Tip to Ring, PC1 4-pin turns to High and PC2 4-pin turns to Low. It recognizes
the action by changing of the current direction (the detected photo coupler changes).
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the action by changing of the current direction (the detected photo coupler changes).
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• Tip→J7→L4→L1→J3→RL1→D2→PL2→Q6(C-E)→R5→R80→D2→J5→PC2(1-2)→R50→RL1→L2→L3→Ring
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