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Preliminary Information
MT9075A
4-173
Table 40 - Jitter Attenuator Status Word
(Page 03H, Address 17H)
Bit
Name
Functional Description
7 - 0 RxEBC7 -0
Receive Eighth Bit Count.
The 8
least significant bit of a counter
that indicates the number of one
eighth bit times there are between
the ST-BUS frame pulse and
receive frame pulse (RxFP).The
accuracy of the this measurement
is approximately
sixteenth) of a bit.
+ 1/16 (one
Table 39 - Least Significant Phase Status Word
(Page 03H, Address 16H)
Bit
Name
Functional Description
7
JACS
Jitter Attenuated Clock Slow.
If
one it indicates that the dejittered
clock period is increased by 1/16 UI.
If zero the clock is at normal speed.
6
JACF
Jitter Attenuated Clock Fast.
If
one it indicates that the dejittered
clock period is decreased by 1/16
UI. If zero the clock is at normal
speed.
5
JAE
Jitter Attenuator FIFO Empty.
If
one it indicates that the JA FIFO is
empty.
4
JAF4
Jitter Attenuator FIFO with 4 Full
Locations.
If one it indicates that
the JA FIFO has at least 4 full
locations.
3
JAFC
Jitter Attenuator Center Full.
If
one it indicates that the JA FIFO is
at least half full.
2
JAE4
Jitter Attenuator FIFO with 4
Empty
Locations.
indicates that the JA FIFO has at
most 4 empty locations.
If
one
it
1
JAF
Jitter Attenuator FIFO Full.
If one
it indicates that the JA FIFO is full.
0
---
Unused
Bit
Name
Functional Description
7
LL
Long Loop.
This bit is one when
the line signal has an amplitude so
attenuated as to require substantial
equalization for data recovery.
6
ML
Medium Loop.
This bit is one when
the line signal has an amplitude so
attenuated as to require some
equalization for data recovery.
5
SL
Short Loop.
This bit is one when
the line signal has an amplitude with
minimal attenuation.
4
LLOS
LIU Loss of Signal Indication.
This bit will be one when the
received signal amplitude is more
than 20 dB below the nominal value
for a period of at least 1 msec. This
bit will be zero for normal operation.
3-0
---
Unused
Table 41 - Receive Signal Status Word
(Page 03H, Address 18H)