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MT9079
4-238
Bit
Name
Functional Description
7 - 0
CMP7
-
CMP0
(00H)
Bit Error Rate Compare Word 7 to 0.
CMP7 is the most significant bit and
CMP0 is the least significant bit of a bit
pattern that is compared with the data of
the selected receive circular buffer one.
When individual bit mismatches are
detected the Bit Error Rate Counter
(BERC) is incremented.
Table 41 - Bit Error Rate Compare Word
(Page 2, Address 11H)
Bit
Name
Functional Description
7
START0
(0)
Start Receive Circular Buffer Zero. If
one, circular buffer zero will start to
accumulate data when a mismatch is
made between the selected received
data and the data of the code detect
word. If zero, this feature is disabled.
6
START0
(0)
Start Receive Circular Buffer Zero. If
one, circular buffer zero will start to
accumulate data when a positive
match is made between the selected
received data and the data of the
code detect word. If zero, this feature
is disabled.
5
START1
(0)
Start Receive Circular Buffer One. If
one, circular buffer one will start to
accumulate data when a mismatch is
made between the selected received
data and the data of the code detect
word. If zero, this feature is disabled.
4
START1
(0)
Start Receive Circular Buffer One. If
one, circular buffer one will start to
accumulate data when a positive
match is made between the selected
received data and the data of the
code detect word. If zero, this feature
is disabled.
3
STOP0
(0)
Stop Receive Circular Buffer Zero. If
one, circular buffer zero will stop
accumulating data when a mismatch
is made between the selected
received data and the data of the
code detect word. If zero, this feature
is disabled.
2
STOP0
(0)
Stop Receive Circular Buffer Zero. If
one, circular buffer zero will stop
accumulating data when a positive
match is made between the selected
received data and the data of the
code detect word. If zero, this feature
is disabled.
Table 42 - Circular Buffer Accumulate Control
Word (Page 2, Address 12H)
1
STOP1
(0)
Stop Receive Circular Buffer One. If
one, circular buffer one will stop
accumulating data when a mismatch
is made between the selected
received data and the data of the
code detect word. If zero, this feature
is disabled.
0
STOP1
(0)
Stop Receive Circular Buffer One. If
one, circular buffer one will stop
accumulating data when a positive
match is made between the selected
received data and the data of the
code detect word. If zero, this feature
is disabled.
Bit
Name
Functional Description
7 - 6
---
Unused.
5
LDCRC
(0)
CRC-4 Error Load Word. Data is
loaded into the CRC-4 Error counter
when this bit is changed from low to
high.
4
LDEC
(0)
E-bit Error Load Word. Data is
loaded into the E-bit Error counter
when this bit is changed from low to
high.
3
LDBPV
(0)
Bipolar Violation Load Word. Data is
loaded into the Bipolar Violation
counter when this bit is changed from
low to high.
2
LDEF
(0)
Errored
Word. Data is loaded into the Errored
Frame Alignment counter when this
bit is changed from low to high.
Frame
Alignment
Load
1
LDRC
(0)
RAI and Continuous CRC Error Load
Word. Data is loaded into the RAI
and Continuous CRC Error counter
when this bit is changed from low to
high.
0
LDBER
(0)
Bit Error Rate Load Word. Data is
loaded into the eight bit BER counter
when this bit is changed from low to
high.
Table 43 - Counter Load Control Word
(Page 2, Address 15H)
(Valid in ST-BUS mode only)
Bit
Name
Functional Description
Table 42 - Circular Buffer Accumulate Control
Word (Page 2, Address 12H)