UPD9903 Datasheet, PDF (21/28 Pages) NEC – UPD9903 ANALOG SUBSCRIBER LINE LSI DIGITAL CODEC

T1
R
TS
RS
TEST0
T2
TEST1
TEST2
TEST3
VCC
(+5 V)
CVCC
1 µF ^{+ R}
(6 V) ^–
T1
T2
CCOM
0.1 µF
(5 V)
CVDD
–+
0.1 µF
(6 V)
RSUS RBSY
1 kΩ 1 kΩ
RFT
50 Ω
Z1^(0.5
%, 1
D2
W)
D1
Z2 ^{D3 D4}
RFR
50 Ω
(0.5 %, 1 W)
48 25
27
29
11
37
11 12 13 16 15
ACOM _CAC
38 ^ACOMIN
Q1
RTE
37 _TB
38 _TE
24 _TEF
3.6 kΩ (1 %, 1 W) 40 _TS
RRE
42 _RS
32 _REF
3.6 kΩ (1 %, 1 W) _{44 RE}
Q4
45 _RB
µPC7073
(BS-LSI)
TX
BIAS
RX
DCOUT3
DCOUT2
DCOUT1
DCIN1
DCIN2
BCUT
ALM
PD
RC1
RC2
RC3
BBOUT
ASCN
AGDT
35^{0.68µF (50 V)}40
9^–
10
39
1
48
2
47
3
46
4
45
5
44
19
30
18
31
17
32
20
29
21
28
22
27
6
43
7
42
8
41
ACOMOUT
AIN
AOUT
CDIN3
CDIN2
CDIN1
DCOUT1
DCOUT2
BCUT
ALM
PD
RC1
RC2
RC3
BBIN
ASCN
AGDT
HWX ²³
TYPE ²⁴
FS ²²
µ PC9903
(HCS-LSI)
DCLK ²¹
HWR ²⁰
EXD ¹⁹
EXS ¹⁸
RST ¹⁷
AUX/MODE ¹⁴
23 47 31 15 46 36 33 34
CGDT ⁺
– ^{0.68 µF}
36 35 34 33
26 25
(10 V)
CVBB _–
–+
CPSR _{+ –} CDC
0.1 µF ⁺
0.68 µF
0.68 µF
VBB (–48 V)
(100 V)
(50 V)
(10 V)
VDD
(+5 V)
2 kΩ
RPULL
HWX
TYPE
FS
DCLK
HWR
EXD
EXS
RST
AUX/MODE
G
Ring-Trip detector
CR