MT90401 Просмотр технического описания (PDF) - Zarlink Semiconductor Inc
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MT90401 Datasheet PDF : 38 Pages
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MT90401
Data Sheet
The MT90401 can operate in free-run, locked or holdover mode. The loop filter corner frequency can be selected to
suit SONET applications or to suit SDH applications. The MT90401 uses an external 20 MHz oscillator as its
master clock and it does not require external loop filter components.
In Hardware Mode, the MT90401 can be controlled and monitored via external pins. In Microport Mode, a
microprocessor can be used for more comprehensive control and monitoring.
SECOOR
OE
CS
RST
HW
D0
D1
D2
D3
VSS8
IC
IC
VDD5
D4
D5
D6
D7
R/W
A0
IC
60 58 56 54 52 50 48 46 44 42 40
62
38
64
36
66
34
68
32
70
MT90401AB
30
72
28
74
26
76
24
78
22
80 2 4 6 8 10 12 14 16 18 20
FS1
FS2
Tdi
Trst
Tclk
Tms
Tdo
VREF
VSS4
C155P
C155N
VDD
VDD2
VSS3
IC
VSS2
PRI
SEC
E3/DS3
E3DS3/OC3
Figure 2 - Pin Connections 80 Pin LQFP for MT90401
2
Zarlink Semiconductor Inc.
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