YTD428_07 YAMAHA [YAMAHA CORPORATION], YTD428_07 Datasheet - Page 25

• Manufacturer Part Number: YTD428_07
• Description: IDSU ISDN DSU for Terminal Equipment
• Manufacturer: YAMAHA [YAMAHA CORPORATION]

REFERENCE CIRCUIT
The reference circuit using YTD428 is shown as bellow.
RA
RB
TA
TB
FG
I.430 TTL Interface
YTD418 or YTD423
Varistor 6
100
100
Line activation
circuit
CLK1536
RESET
HRD
LRD
HTD
LTD
R(1%)
R(1%)
8.2k
8.2k
10k
10k
10k
10k
10k
10k
10k
10k
10k
0.1
33k
22
0.1
1M
10k
11
5
3
A2
1S953 12
A2
D
D
LO1
LO2
LI1
LI2
LICT
RX
CX1
CX2
NTSEL
HRD
LRD
HTD
LTD
CLK1536
RESET
REV
TDP
RDP
ODSEL
TSMPSEL
MULTI
EXID
CLKSEL
ATEO
TEST0,2-9,21,22
TEST1,16-19
TEST10,11,24
TEST28
POWMON
LOCAL
LPSEL
TSMPAUT
ATEI
TEST12 - 15
TEST23, 25-27
YTD428
CLK192K
CLK256K
LOOP2A
CLK200
CLK400
TEST20
CLK4K
UDM0
SGBP
LPSW
AV
AV
AV
AV
UDM1
UDP0
RXU2
RXU1
UDP1
DV
DV
SGA
SGB
SGR
RUC
VRB
RXS
VRT
SXA
DD
DD
SS
SS
DD
SS
2
1
2
1
A1
2SK2315
2SJ278
560(1%)
560(1%)
8(1%)
1
TDK
NL322522T-3R3J
A1
A1
A2
A1
D
0.0047 (10%)
0.0022 (10%)
0.015 (10%)
0.15 (10%)
0.33 (10%)
0.1
0.1
0.1
1u
1u
1u
1.8k(1%)
1.8k(1%)
0.01 (10%)
TDK
TRTEPC9.8-0319C
Line activation
circuit
6
5
8
7
8(1%)
A1
1
2SJ278
2SK2315
A1
1
2
3
4
VRYA15
Line activation
circuit
1 /160V
KP4N12
15(1W)
15(1W)
FG
FG
KP15N14
KP15N14
L2
L1