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KX-TCA256X
4 Technical Descriptions
4.1.
Block Diagram (Handset)
AMPLIFIER
SPEAKER
RECEIVER
MIC
Headset
Q101,Q102,Q103
JACK
R7,R101,R103,R117
+
CHARGE
CHARGE
CHARGE
CIRCUIT
CONTACTS
CHARGE
D102
BATTERY +
BATTERY
TERMINAL
BATTERY -
3.6V
LCD
96X64
dot
LCD-BACK LIGHT
(Blue)
KEY-BACK LIGHT
(Green)
33,34,37
SP-PHONE LED
(Red)
CHARGE LED
(Red and Green)
VIB
IC401
SP_AMP Control
CHARGE
CHARGE DETECT
VBAT2
2.75V
2.7V
1.85V
Q105
Q104
CS 2
RESET
AO
SI
SCL
AOUT
31
23 SCLK
MIDI
39
21 SRQ
IC301
41
20 ERQ
30 CLK
LOGIC IC
IC303
BATT
6.00MHz
X101
70
Speech
69
Decoding
D/A
68
Speech
Encoding
76
A/D
ADPCM
Codec
Analog
Filter
Front
End
DSP
3
55
54
64
CPU
62
63
46
47
1
50
49
49 24
4
KX-TCA256X BLOCK DIAGRAM (HANDSET)
6
Burst
17
RXDA
Decoding
TXDA
19
Burst
Encoding
16
RSSI
9
SYRI
RF
Interface
20
SYEN
21 SYDA
22 SYCL
BMC
12
XTAL
11
ON SWITCH
53
35, 36, 37, 38
ROWS
28~32, 40
COLUMNS
BBIC
IC201
To RF
Block
X100
10.368
MHz
BATTERY
KEYPAD
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