Panasonic KX-TCA364RU Service Manual ▷ View online
5
KX-TCA364RU
3 Specifications
Handset
Charger Unit
Standard:
DECT= (Digital Enhanced Cordless Telecommunications)
GAP= (Generic Access Profile)
GAP= (Generic Access Profile)
Power Source:
Rechargeable Ni-MH battery
AC Adaptor
Power Consumption
Standby: Approx. 1.5W
Maximum: Approx. 6W
Maximum: Approx. 6W
Number of Channels:
120 Duplex Channels
Frequency Range:
1.88GHz to 1.9GHz
Duplex Procedure:
TDMA (Time Division Multiple Access)
Battery Life, Handset (if batteries are fully charged):
Stand-by: Up to -270 hours (Ni-MH)
Talk: Up to 17 Hours (Ni-MH)
Talk: Up to 17 Hours (Ni-MH)
Channel Spacing:
1728kHz
Bit rate Spacing:
1152kbit/s
Operating Conditions:
5~40
°C, 20~80% relative air humidity (dry)
Modulation:
GFSK= (Gaussian Frequency Shift Keying)
RF Transmission Power:
approx. 250mW
Voice Coding:
ADPCM 32 kbit/s
Operation Range:
Up to 300 m outdoors, Up to 50 m indoors
Dimensions (H x W x D):
152 mm x 52 mm x 29 mm
61 mm x 85 mm x 84 mm
Weight: about
171g
about
95g
6
KX-TCA364RU
4 Technical Descriptions
4.1.
Block Diagram (Handset)
12
CPU
IC201
BBIC
A/D
D/A
Analog
Front
End
Front
End
Speech
Encoding
Encoding
Speech
Decoding
Decoding
DSP
ADPCM
Codec
Filter
Codec
Filter
BMC
RF
Interface
Interface
MIC
SYRI
RSSI
SYEN
RXDA
TXDA
19
17
16
9
20
To RF
Block
Block
BATTERY
TERMINAL
TERMINAL
BATTERY +
CHARGE
CIRCUIT
CIRCUIT
CHARGE
CHARGE DETECT
CHARGE
CONTACTS
CONTACTS
CHARGE
3.6V
VBAT2
11
XTAL
10.368
BATTERY
MHz
KEYPAD
COLUMNS
ROWS
LCD
96X64
dot
dot
ON SWITCH
55
54
53
64
KX-TCA364
RU BLOCK DIAGRAM (HANDSET)
47
46
63
62
49 24
23 SCLK
30 CLK
21 SRQ
20 ERQ
31
AOUT
39
4
1
50
RECEIVER
SPEAKER
69
70
68
76
28~32, 40
35, 36, 37, 38
Burst
Encoding
Encoding
Burst
Decoding
Decoding
+
CHARGE
D102
49
RESET
CS 2
AO
SI
SCL
AMPLIFIER
IC401
Headset
JACK
SP_AMP Control
3
MIDI
IC301
LOGIC IC
LCD-BACK LIGHT
(Blue)
(Blue)
KEY-BACK LIGHT
(Green)
(Green)
CHARGE LED
(Red and Green)
(Red and Green)
6.00MHz
IC303
Q101,Q102,Q103
R7,R101,R103,R117
R7,R101,R103,R117
Q104
Q105
X100
2.75V
2.7V
1.85V
21 SYDA
22 SYCL
22 SYCL
BATTERY -
X101
BATT
VIB
33, 34
37
7
KX-TCA364RU
4.2.
Circuit Operation (Handset)
4.2.1.
Outline
Handset consists of the following ICs as shown in Block Diagram (Handset) (P.6).
• DECT BBIC (Base Band IC): IC201
- All data signals (forming/analyzing ACK or CMD signal)
- All interfaces (ex: Key, Detector Circuit, Charge, DC/DC Converter, LCD)
- All interfaces (ex: Key, Detector Circuit, Charge, DC/DC Converter, LCD)
Include EEPROM and Flash memory
EEPROM stores the temporary operating parameters (for RF, etc.)
EEPROM stores the temporary operating parameters (for RF, etc.)
• AMP: IC401
- Single OP_AMP for SP
• MIDI: IC301
- 16-Tone 32-Poly PCM Sound Generator
- Port (LED direct driver with PWM)
- Port (LED direct driver with PWM)
• RF Block
- IC601
PLL Oscillator
Detector
Compress/Expander
Amplifier for reception
Detector
Compress/Expander
Amplifier for reception
- IC602
Amplifier for transmission
Power control
Power control
4.2.2.
Power Supply Circuit/Reset Circuit
Circuit Operation:
When power on the Handset, the voltage is as follows;
BATTERY(3.5V~4.2V: Battery+)
BATTERY(3.5V~4.2V: Battery+)
→ Q104 (1.8V)
BATTERY(3.5V~4.2V: Battery+)
→ Q105 (2.7V)
The Reset signal generates IC201 (78) and 1.8V.
4.2.3.
Charge Circuit
Circuit Operation:
When charging the handset on the charger, the charge current is as follows;
DC+(9V~10V)
DC+(9V~10V)
→ IC601(6) → IC601(2) → L601 → JT601(Charger) → JT101(Handset) → L101 → Q101→ D102 → BAT-
TERY+... Battery... BATTERY-
→ R115 → GND → L102→ JT102(Handset) → JT602(Charger) → R616, R617, R618, R619 →
GND
→ DC-(GND)
In this way, the BBIC on Handset detects the fact that the battery is charged.
The charge current is controlled by switching Q101 of Handset.
The charge current is controlled by switching Q101 of Handset.
4.2.4.
Battery Low/Power Down Detector
Circuit Operation:
"Battery Low" and "Power Down" are detected by BBIC which check the voltage from battery.
The detected voltage is as follows;
The detected voltage is as follows;
• Battery Low
Battery voltage: V(Batt) 3.5V ± 50mV
The BBIC detects this level and "
" starts flashing.
• Power Down
Battery voltage: V(Batt) 3.3V ± 50mV
The BBIC detects this level and power down.
The BBIC detects this level and power down.
4.2.5.
Speakerphone and Headset Jack
The hands-free loudspeaker at CN401(1) and CN401(2) is used to generate the ring alarm. IC401 is used to switch off the tele-
phone loudspeaker and is used to amplify the signal to drive the hands-free loudspeaker. They are selected using the SP_AMP
line from pin 70 of the BBIC. 2.5mm headset jack is also available.
phone loudspeaker and is used to amplify the signal to drive the hands-free loudspeaker. They are selected using the SP_AMP
line from pin 70 of the BBIC. 2.5mm headset jack is also available.
8
KX-TCA364RU
4.3.
Block Diagram (RF Unit)
2
:R
CHP
:N/A
PLL &
Control logic
VCO
PD
Low IF bandpass filter
LNA
Mixer
IC601
RSSI
KX-TCA364RU (RF UNIT)
RXDA
SYCL
SYDA
SYEN
FIL601
D601
RXDSG
Loop filter
TXDA
SYRI
PAON
RXON
PSEL
BATT
Voltage
regulator
Voltage
regulator
To CPU Block
To CPU Block
IC602
Antenna
S&H
Demodulator
:32/33
VCCS
VCC1
VCC
Voltage
regulator
IC603
VCC2
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