mt9079apr1 Zarlink Semiconductor, mt9079apr1 Datasheet - Page 36

• Manufacturer Part Number: mt9079apr1
• Description: Advanced Controller For E1
• Manufacturer: Zarlink Semiconductor

7 - 6
Bit
5
4
3
2
1
0
COD1-0
Name
HDB3
MFRF
DLBK
RLBK
SLBK
PLBK
(1 0)*
(0)*
(0)*
(0)
(0)
(0)
(0)
Table 30 - Coding and Loopback Control Word (Page 1, Address 15H)
These two coding select bits determine the transmit and receive coding options as follows:
Bits
00 RZ (Return to Zero)
01 NRZ (Non-return to Zero)
10 NRZB (Non-return to Zero Bipolar)
11
High Density Bipolar 3 Selection. If zero,
If one, AMI without
direction.
Multiframe Reframe. If set, for at least one frame, and then cleared the MT9079 will initiate a
search for a new signalling multiframe position. This function is activated on the one-to-zero
transition of the MFRF bit.
Digital Loopback. If one, then all time slots of DSTi are connected to DSTo on the PCM 30 side
of the MT9079. If zero, this feature is disabled. See Loopbacks section.
Remote Loopback. If one, then all time slots received on RxA/RxB are connected to TxA/TxB
on the PCM 30 side of the MT9079. If zero, then this feature is disabled. See Loopbacks sec-
tion.
ST-BUS Loopback. If one, then all time slots of DSTi are connected to DSTo on the ST-BUS
side of the MT9079. If zero, then this feature is disabled. See Loopbacks section.
Payload Loopback. If one, then all time slots received on RxA/RxB are connected to TxA/TxB
on the ST-BUS side of the MT9079 (this excludes time slot zero). If zero, then this feature is
disabled. See Loopbacks section.
no function
Function
HDB3
Zarlink Semiconductor Inc.
MT9079
encoding is transmitted.
36
Functional Description
HDB3
encoding is enabled in the transmit direction.
HDB3
is always decoded in the receive
Data Sheet