mt9072av2 Zarlink Semiconductor, mt9072av2 Datasheet - Page 174

• Manufacturer Part Number: mt9072av2
• Description: Octal T1/e1/j1 Framer
• Manufacturer: Zarlink Semiconductor

Bit
15
14
13 RHDB3
Bit
8
7
6
5
4
3
2
1
0
Name
COD1
COD0
(1 0)
(0)
CRCE
PERR
Name
NFSE
LOSE
PLBK
FASE
BVE
(0)
E1
(0)
E2
(0)
(0)
(0)
(0)
(0)
(0)
(0)
Table 143 - Test, Error and Loopback Control Register (R/W Address Y01) (E1)
Line Coding. These two coding select bits determine the transmit and receive coding options as
follows. See Figures 64 to 67.
COD1 COD0 Function
0
0
1
1
RHDB3 (High Density Bipolar 3) encoding. If zero, HDB3 decoding is enabled in the receive
direction. If one, AMI (Alternate Mark Inversion) signal without HDB3 decoding is enabled in the
transmit direction.
Table 144 - Interrupts and I/O Control Register (R/W Address Y02) (E1)
0
1
0
1
Payload Loopback. If one, all timeslots received on RPOS/RNEG are connected to
TPOS/TNEG on the ST-BUS side(DSTo to DSTi) of the selected framer (Y) (this excludes
time-slot 0). Hence the data passes through the receiver and output to DSTo. This DSTo data
is looped back to DSTi which is transmitted to TPOS/TNEG by the transmitter.
If zero, this feature is disabled. See Loopbacks section.
E1 Error Insertion. A zero-to-one transition of this bit inserts a single E1 error into the
transmit PCM30 data (bit position 1 of frame 13 of the CRC-4 Multiframe). A one, zero or
one-to-zero transition has no function.
E2 Error Insertion. A zero-to-one transition of this bit inserts a single E2 error into the
transmit PCM30 data (bit position 1 of frame 15 of the CRC-4 Multiframe). A one, zero or
one-to-zero transition has no function.
Bipolar Violation Error Insertion. A zero-to-one transition of this bit inserts a single bipolar
violation error into the transmit PCM30 data. A one, zero or one-to-zero transition has no
function.
CRC-4 Error Insertion. A zero-to-one transition of this bit inserts a single CRC-4 error into
the transmit PCM30 data. A one, zero or one-to-zero transition has no function.
Frame Alignment Signal Error Insertion. A zero-to-one transition of this bit inserts a single
error into the timeslot zero frame alignment signal of the transmit PCM30 data. A one, zero or
one-to-zero transition has no function.
Non-frame Alignment Signal Error Insertion. A zero-to-one transition of this bit inserts a
single error into bit two of the timeslot zero non-frame alignment signal of the transmit PCM30
data. A one, zero or one-to-zero transition has no function.
Loss of Signal Error Insertion. If one, the selected framer (Y) transmits an all zeros signal
(no pulses) in every PCM30 timeslot, and, the HDB3 control bit (reg address Y02) has no
effect. If zero, data is transmitted normally.
Payload Error Insertion. A zero-to-one transition of this bit inserts a single error in the
transmit payload. A one, zero or one-to-zero transition has no function.
RZ (Return to Zero, Dual Rail)
NRZ (Non-return to Zero, Single Rail)
NRZB (Non-return to Zero, Dual Rail)
No function
Zarlink Semiconductor Inc.
MT9072
Functional Description
Functional Description
174
Data Sheet