
MT9071
Preliminary Information
138
Bit
Name
Functional Description
15
14
13
12
11
10
9
8
PCC7
PCC6
PCC5
PCC4
PCC3
PCC2
PCC1
PCC0
(0000 0000)
CRC Counter for Pseudo Random Bit Sequence (PRBS).
These bits make up a counter
which is incremented for each received CRC multiframe. PCC0 is the least significant bit
(LSB). This counter is cleared with either:
a) An overflow
b) A hard reset (RESET pin)
c) A unique soft reset (RST bit detailed in Table 178 - T1 Interrupt and I/O Control - R/W
Address YF1)
d) A global soft reset (RSTC bit detailed in Table 70 - T1 & E1 Global Mode Control - R/W
Address 900)
e) A counter clear (CNCLR bit detailed in Table 178 - T1 Interrupt and I/O Control - R/W
Address YF1)
Or, this counter may be set by writing the desired value to it. The lower byte and upper byte
of this register cannot be written to independently.
Pseudo Random Bit Sequence (PRBS) Error Counter.
These bits make up a counter
which is incremented for each pseudo random bit sequence (PRBS) (2
15
-1) error detected
on any of the DSTo receive channels connected to the PRBS error detector. ADSEQ=0
detailed in Table 80 - T1 Line Coding Control - R/W Address Y01; and RRSTn=1 detailed
in Table 166 - T1 Per Channel 1 to 24 Control Registers - R/W Address Y90-YA7. PEC0 is
the least significant bit (LSB). This counter is cleared with either:
a) An overflow
b) A hard reset (RESET pin)
c) A unique soft reset (RST bit detailed in Table 178 - T1 Interrupt and I/O Control - R/W
Address YF1)
d) A global soft reset (RSTC bit detailed in Table 70 - T1 & E1 Global Mode Control - R/W
Address 900)
e) A counter clear (CNCLR bit detailed in Table 178 - T1 Interrupt and I/O Control - R/W
Address YF1)
Or, this counter may be set by writing the desired value to it. The lower byte and upper byte
of this register cannot be written to independently.
Table 114 - T1 PRBS CRC Multiframe and PRBS Error Counter - R/W Address Y15
7
6
5
4
3
2
1
0
PEC7
PEC6
PEC5
PEC4
PEC3
PEC2
PEC1
PEC0
(0000 0000)
Bit
Name
Functional Description
15
14
13
12
11
10
9
8
PEC7
PEC6
PEC5
PEC4
PEC3
PEC2
PEC1
PEC0
(0000
0000)
Pseudo Random Bit Sequence (PRBS) Error Counter.
These bits make up a counter which is
incremented for each pseudo random bit sequence (PRBS) (2
15
-1) error detected on any of the
DSTo receive channels connected to the PRBS error detector. ADSEQ=0 detailed in Table 81 -
E1 Test, Error and Loopback Control - R/W Address Y01; and RRSTn=1 detailed in Table 167 -
E1 Per Timeslot 0 to 31 Control Registers - R/W Address Y90-YAF. PEC0 is the least significant
bit (LSB). This counter is cleared with either:
a) An overflow
b) A hard reset (RESET pin)
c) A unique soft reset (RST bit detailed in Table 85 - E1 DL, CCS, CAS and Other Control - R/W
Address Y03)
d) A global soft reset (RSTC bit detailed in Table 70 - T1 & E1 Global Mode Control - R/W
Address 900)
e) A counter clear (CNCLR bit detailed in Table 85 - E1 DL, CCS, CAS and Other Control - R/W
Address Y03)
Or, this counter may be set by writing the desired value to it. The lower byte and upper byte of
this register cannot be written to independently.
Table 115 - E1 PRBS Error Counter & PRBS CRC Multiframe Counter - R/W Address Y15