MT9042CPR1 Zarlink Semiconductor, Inc., MT9042CPR1 Datasheet - Page 17

• Manufacturer Part Number: MT9042CPR1
• Description: Dual Reference Frequency Selectable Digital PLL with Multiple Clock Outputs for T1/E1 (ITU-T G.812 type IV) and Stratum (3, 4, 4E) Applications
• Manufacturer: Zarlink Semiconductor, Inc.

Power Supply Decoupling
The MT9042C has two VDD (+5V) pins and two VSS
(GND) pins.
should be included as shown in Figure 17.
External Stimulus
RX Line
RX Line
To Line 1
TX Line
TX Line
To Line 2
XFMR
XFMR
XFMR
XFMR
To
To
To
To
Figure 16 - Dual E1 Reference Sources with MT9042C in 8kHz Manual Control
Power and decoupling capacitors
TTIP
TRING
RTIP
RRING
TTIP
TRING
RTIP
RRING
MT9075
MT9075
MT8985
RxFP
RxFP
DSTo
DSTo
DSTi
DSTi
STo0
STo1
LOS
LOS
STi0
STi1
C4i
C4i
C4i
F0i
F0i
F0i
CONTROLLER
Figure 17 - Power Supply Decoupling
0.1uF
C2
18
1
SEC
TRST
RST
PRI
LOS1
LOS2
MS1
MS2
RSEL
MT9042C
15
0.1uF
C1
C1.5o
OSCi
C4o
FS1
FS2
F0o
GTi
5
+ 5V
MT9042C
MT9042C
Out
20MHz
CLOCK
±
32ppm
17