DS3112+W Maxim Integrated Products, DS3112+W Datasheet - Page 59

• Manufacturer Part Number: DS3112+W
• Description: IC MUX T3/E3 3.3V 256-PBGA
• Manufacturer: Maxim Integrated Products

Specifications of DS3112+W

• Controller Type: Framer, Multiplexer
• Interface: Parallel/Serial
• Voltage - Supply: 3.135 V ~ 3.465 V
• Current - Supply: 150mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 256-PBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

5.6 T3/E3 Performance Error Counters
There are six error counters in the DS3112. All of the errors counters are 16 bits in length. The host has
three options as to how these errors counters are updated. The device can be configured to automatically
update the counters once a second or manually via either an internal software bit (MECU) or an external
signal (FRMECU). See Section
rollover.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit #
Name
Default
Note: Bits that are underlined are read-only; all other bits are read-write.
Bits 0 to 15: 16-Bit BiPolar Violation Counter (BPV0 to BPV15). These bits report the number of BiPolar
Violations (BPV). In the E3 Mode, this counter can also be configured via the E3CVE bit in the T3E3 Control
Register (Section 5.2) to count Code Violations (CV). A BPV is defined as consecutive pulses (or marks) of the
same polarity that are not part of a B3ZS/HDB3 codeword. A CV is defined in ITU O.161 as consecutive BPVs of
the same polarity.
Register Name:
Register Description:
Register Address:
Bit #
Name
Default
Bit #
Name
Default
Note: Bits that are underlined are read-only; all other bits are read-write.
Bits 0 to 15: 16-Bit EXcessive Zero Counter (EXZ0 to EXZ15). These bits report the number of EXcessive Zero
occurrences (EXZ). An EXZ occurrence is defined as three or more consecutive zeros in the T3 mode and four or
more consecutive zeros in the E3 mode. As an example, a string of eight consecutive zeros would only increment
this counter once.
BPV15
EXZ15
BPV7
EXZ7
—
15
—
—
15
—
7
7
BPV14
EXZ14
BPV6
EXZ6
—
14
—
—
14
—
6
6
BPVCR
BiPolar Violation Count Register
20h
EXZCR
EXcessive Zero Count Register
22h
4.2
BPV13
EXZ13
BPV5
EXZ5
for details. All the error counters saturate when full and will not
—
13
—
—
13
—
5
5
BPV12
EXZ12
59 of 133
BPV4
EXZ4
—
12
—
—
12
—
4
4
BPV11
EXZ11
BPV3
EXZ3
—
11
—
—
11
—
3
3
BPV10
EXZ10
BPV2
EXZ2
—
10
—
—
10
—
2
2
BPV1
BPV9
EXZ1
EXZ9
—
—
—
—
1
9
1
9
BPV0
BPV8
EXZ0
EXZ8
—
—
—
—
DS3112
0
8
0
8