Vrf; Ic201 - Panasonic KX-TG2220BXB Service Manual

(1)
(2)
(3)
(8)
RA201
100K
8 7
6 5
4 3
2 1
(9)
(10)
(13)
81 NC
KEYIN_5
82 KEYIN_5
KEYIN_4
83 KEYIN_4
KEYIN_3
84 KEYIN_3
KEYIN_2
85 KEYIN_2
KEYIN_1
86 KEYIN_1
87 NC
(14)
88 EEP_CS
100-13/AGPIO_0-AGPIO_13
89 NC
16-27/EGPIO_4-EGPIO_15
90 NC
56/BGPIO_0/CE0
91 NC
59-61/BGPIO_3-BGPIO_5
92 KEY_BACKLIGHT
67-70/BGOIO_11-BGPIO_14
(15)
93 LCD_BACKLIGHT
74/CGPIO_0, 79/CGPIO_10
94 LCD_POWER_SW
98-99/CGPIO_12-CGPIO_13
95 EEP_WP
80-95/DGPIO15-DGPIO_0
96 GND
97 VCC
R273 98 NC
99 EEP_CLK
(22)
100 NC
NC
BT
(23)
RX
R212 100
TX
R213 100
(24)
(28)
(29)
(41)

VRF

3.0V
(42)
KX-TG2220BXB / KX-TG2220BXF / KX-TG2220BXS / KX-TGA226BXB / KX-TGA226BXF / KX-TGA226BXS
R278
100K
Q204
C236 C4P
X201
8.192M
C237 C4P
C303
10
C214 0.1
VCCPLL 50
GNDPLL 49
RSSI 48
MIP 47
MIN 46

IC201

VREF 45
HSMIP 44
GNDA 43
DC/DC_MONITOR 42
VCCA 41
NC 40
NC 39
NC 38
NC 37
LIN0 36
BATTLOW
DCIN0 35
LOUT0 34
HSSPOUT 33
VCCPA 32
SPOUTN 31
GNDPA
3.0V
IC203
1 2
OUT IN
GND 3.0V
3
R226
NC
VCC
R247
1.8K
C257
R223
6.3V22
1K
L204
R231 C232
NC
1K K0.033
C217
R229 C230
1.0
1K K0.033
Q206
R224
10K
R222
100
POWERDOWN
R233
R236
Q205
0 NC
3.6V
VBAT
D217 L210
22uH
D
G
Q212
S
VSS
KX-TGA226BXB/F/S: SCHEMATIC DIAGRAM (HANDSET)
79
MICP
L211
NC
MIC
+
L212
NC
MICM
R253
2.2K
SP1
5
L205
SP2
4
L206
MIC2
3
MIC1
2
L208
1 GND
CN203
HEADSET-DET
SPM
R302
47
SPP
HANDSET SP
TPM
R242
+
R243
SP-phone
TPP
Q207
R248
39K
2.6V
IC205
C234
OUT IN
1 2
NC
4 3
CHARGE2
CHG2
D208 D207
D205 D206
CHG1
CHARGE1
HEADSET-JACK
-
+