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A[4]
10 DA0
A[5]
11 DA1
A[6]
12 DA2
A[7]
13 DA3
RBA[0]
16 DA4
RBA[1]
17 DA5
+5VD
RBA[2]
18 DA6
RBA[3]
19 DA7
RBA[4]
20 DA8
RBA[5]
9 DA9
6 NC
21 NC
7 WE
22 OE
8 RAS
23 CAS
(1)
R632
0
(2)
For EMC
(3)
DG
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
+5VD
R558
8.2
+5VD
L516
L515
10
C558
Z0.1u
(13)
(14)
L527
AG_M
(15)
(16)
(17)
+5VD
IC522
C631
8 VDD
1
( )
IN
(18)
ESD
7 ESD
2
PD
X504
ACK
(19)
6 ACK
3
OSC
SD
R624
(20)
5 SD
4
VSS
NC
NOT USED
(21)
R616
10k
IC503
2
D[0]
R618
D0
3
D[1]
( )
D1
4
D[2]
D2
5
D[3]
+5VD
D3
24
D[4]
D4
25
D[5]
D5
26
D[6]
D6
27
D[7]
D7
14
VDD
1
VDD
15
GND
28
D[0]
GND
D[1]
D[2]
D[3]
R631
R634
( )
0
R635
( )
DG
DG
IC513
C575
Z0.1u
1 CONT
5
VIN
MDM3_3V
2 GND
3 NOISE
4
VOUT
C560
C567
C580
K0.01u
Z0.1u
16V 10u
AG_M
+5VD
R562
4.7k
+5VD
103 RESERVED
104
GPO4
C562
GPO3
105
K4700p
106
DGND4
107
CTS#
108
IRQ1#
109
GPO2
GPO1
110
C563
111
GPO0
K4700p
112
VDD5
113
VGG
114
DGND5
115
RESET#
116
XTALI
X503
117
XTALO
R560 100
118
RESERVED
32.256MHz
119
XCLK
XCLK
120
GPI1
C559
C561
121
IRQ2#
J12p
J10p
122
SR3IN
123 RESERVED
124 RESERVED
L517
125
DGND6
126
DVAA
127
AGND5
128
C557
R559
K0.1u
10k
R605
C570
R563
R574
K0.1u
0
C566
Z0.1u
IC514
+5VD
C571
K680p
C572
K680p
C573
K680p
+5VD
C588
Z0.1u
IC512
1 VSS
44
VCC
2 CLE
43
CE
3 ALE
42
RE
4 WE
41
R/B
5 WP
40
GND
6 N.C.
39
N.C.
7 N.C.
38
N.C.
8 N.C.
37
N.C.
9 N.C.
36
N.C.
10 N.C.
35
N.C.
11
34
12
33
13 N.C.
32
N.C.
14 N.C.
31
N.C.
15 N.C.
30
N.C.
16 N.C.
29
N.C.
17 N.C.
28
N.C.
18 I/O0
27
D[7]
I/O7
D[6]
19 I/O1
26
I/O6
20 I/O2
25
D[5]
I/O5
21 I/O3
24
D[4]
I/O4
22 VSS
23
VCC
C589
Z0.1u
+5VD
L521
0
C583
Z0.1u
RA505
RA506
220
220
32.256MHz
IC505
C594
C595
+5VD
AG_M
C615
12k
K0.039u
18k C586
K0.1u
C592
( )
C630
R640
K0.082u
0
R581
5.6k
+5VA
R582
4.7
+5VD
C596
6.3V 220u
CISON
R589
4.7K
+5VA
C599
R571
C579
R586
Q509
Not Used
SI
FAX TX signal
FAX RX signal
+5VD
+5VD
R594
10k
Q511
R602
1
3
5.6k
PS501
2
4
C602
C606
+5VA
16V 10u
16V 10u
C604
C608
Z0.1u
Z0.1u
AG_M
AG_M
C611
K0.1u
NC
64
63
C617
R611
MICBIAS_P
MICM_P
62
K6800p
560
MICP_P
61
C616
LINEIN_P
60
R610
NC
59
K0.1u
10k
AGND3
58
IARESET_P#
57
FSYNC_P
56
SIN_P
55
SOUT_P
54
RESERVED
53
CTRLSIN_P
52
MCLK_P
51
ICLK_S/NC
50
RESERVED/NC
49
AVDD_S/NC
48
SPKRM_S/NC
47
SPKRP_S/NC
46
AGND2
45
NC
44
LINEOUT_S/NC
43
42
VAA_S/NC
VC_S/NC
41
VREF_S/NC
40
NC
39
AG_M
R604
2.7k
C607
C610
Z0.1u
Z0.1u
R628
C605
C609
10K
16V 10u
16V 10u
C628
R612
K0.0022
15K
AG_M
C633
K0.1u
VIDEO
FTG
+24VF
+5VD
+5VD
Q510
CN503
TO CIS
CLK
DIGITAL BOARD SCHEMATIC DIAGRAM
KX-FM90CE-W / KX-FM90HG-W
+5VD
R607
4.7k
R606
SW501
3
1
4
2
100
FILM/COVER SW
C621
Z0.1u
CN501
EXHOOK1
1 EXHOOK1
BELL
2 BELL
LINERLY
3 LINERLY
DCN
4 DCN
SPMUTE
5 SPMUTE
HOOK
6 HOOK
MPOS
7 MPOS
LINERX
8 LINERX
LINETX
9 LINETX
SPOUT
10 SPOUT
HSTX+
+24VF
+5VA
11 HSTX(+)
HSTX-
12 HSTX(-)
HSRX+
13 HSRX(+)
HSRX-
14 HSRX(-)
15 24V
16 5VA
R629
17 AG
( )
AG_M
+5VD
CN507
L526
1 5VD
0
2 DG
MONRX
3 MONRX
CSI
4 EXHOOK2/CSI(I)
CSO
5 BREAK/CSO(O)
CCLK
6 E-RECALL(O)/CCLK(I)
CBUSY1
7 HS-ALC/CBUSY1(I)
CBUSY2
8 P-SHORT/CBUSY2(O)
CRESET
9 DTMFINP/CRESET(O)
S_ENB
10SIDETONE/S-ENB(O)
Q512
PG
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