pt7a4409 Pericom Technology Inc, pt7a4409 Datasheet - Page 13

• Manufacturer Part Number: pt7a4409
• Description: T1/e1/oc3 System Synchronizer
• Manufacturer: Pericom Technology Inc

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PT0103(12/05)
Table 7. Automatic Operation Mode (MS1 MS2=11, RSEL=0)
Figure 8. Diagram of State Change in Automatic Mode
L
L
L
L
L
R
e
e
e
e
e
f e
L
L
L
L
L
e g
e g
e g
e g
e g
O
O
O
O
O
r e
X
X
0
0
1
1
d n
d n
d n
d n
d n
2 S
2 S
2 S
2 S
2 S
o t
:
i f
(X0X)
: -
: /
I T
Notes:
(xxx): (LOS2 LOS1 GTi)
IR: Invalid Reference Signal
u g
N
N
: E
e r
: Phase re-alignment
: Phase continuity maintained without TIE Corrector
: Phase continuity maintained with TIE Corrector
t o
o
L
L
L
L
L
S
(X01)
I
I
I
I
I
O
O
O
h c
O
O
7
a v
a t
p n
p n
p n
p n
p n
0
0
1
1
1
1
1 S
1 S
1 S
1 S
1 S
o f
Reset
n a
e t
d i l
Primary
Normal
t u
t u
t u
t u
t u
s r
e g
h c
S1
C
C
C
C
C
a t
n a
n o
n o
n o
n o
n o
e t
e g
r t
r t
r t
r t
r t
c
G i T
G i T
G i T
G i T
G
(X00)
a h
X
X
c o
l o
l o
l o
0
0
l o
l o
1
1
i T
g n
u c
s e
(010 or 11X)
s r
(X0X)
(11X) RST=1
IR
(X0X)
(010 or 11X)
w
o t
h t i
a
0
R T
R T
R T
R T
R
d n
o t
S
S
S
S
S
T
1
1
1
1
1
Auto-Holdover
T
(X0X)
E I
f
1
o r
Primary
Holdover
C
m
Primary
S1A
r o
S1H
A
e r
u
(010 or 11X)
r F
r F
r F
r F
r F
t c
o t
e e
e e
e e
e e
e e
r o
H -
0 S
1 S
1 S
2 S
2 S
R -
R -
R -
-
-
(X0X)
R -
R -
r i c
l o
n u
n u
n u
n u
n u
o d
u c
e v
Free-Run
. t i
s r
(X0X)
13
(11X)
S0
(011)
a t
. e t
N
N
N
N
N
2 S
P (
r o
r o
r o
r o
r o
1 S
1 S
* Movement to Normal State from any state requires a
1 S
0 S
R
-
-
(011)
T
m
m
m
m
m
valid input signal.
H
H
) I
E I
Auto-Holdover
l a
l a
l a
l a
l a
Secondary
Secondary
T1/E1/OC3 System Synchronizer
Holdover
S2A
S2H
(11X)
N
N
N
N
N
(011)
1 S
1 S
S (
S
S
S
S
S
r o
r o
r o
r o
r o
2 S
a t
a t
a t
a t
a t
2 S
0 S
E
-
-
T
T
m
m
m
m
m
H
e t
e t
e t
e t
e t
) C
(01X)
E I
E I
l a
l a
l a
l a
l a
(11X)
IR
(01X)
(11X)
H
H
H
H
H
PT7A4409/4409L
1 S
2 S
Secondary
o
o
o
o
o
P (
1 S
Normal
d l
d l
d l
d l
d l
0 S
1 S
R
-
-
T
T
v o
v o
v o
v o
v o
H
S2
) I
E I
E I
r e
r e
r e
r e
r e
Data Sheet
(01X)
(01X)
H
H
H
H
H
1 S
1 S
2 S
2 S
S (
o
o
o
o
o
2 S
d l
d l
d l
d l
d l
0 S
E
-
T
T
T
T
v o
v o
v o
v o
v o
H
) C
E I
E I
E I
E I
r e
r e
r e
r e
r e
Ver:2