Datasheet

DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
32 of 101
Register Name:
GMC
Register Description:
G.772 Monitoring Control Register
Register Address:
0Bh
Bit # 7 6 5 4 3 2 1 0
Name BERTDIR BMCKS BTCKS — GMC3 GMC2 GMC1 GMC0
Default 0 0 0 0 0 0 0 0
Bit 7: BERT Direction Select (BERTDIR). When set, the internal BERT will output its data on RPOS/RNEG rather
than TTIP/TRING. The BERT will use the recovered clock unless BMCKS or BTCKS is set.
Bit 6: BERT MCLK Select (BMCKS). When set, while BERTDIR is set and BTCKS is not set, the internal BERT
will use MCLK rather than the recovered clock.
Bit 5: BERT Direction Select (BTCKS). When set, while BERTDIR is set, the internal BERT will use TCLK rather
than the recovered clock or MCLK.
Bits 3 to 0: G.772 Monitoring Control (GMC). These bits are used to select a transmit line (TTIPn/TRINGn) or
receive line (RTIPn/RRINGn) for nonintrusive monitoring. Receiver 1 is used to monitor channels 2 to 8. See
Table
5-9
.
Table 5-9. G.772 Monitoring Control
GMC3 GMC2 GMC1 GMC0 SELECTION
0 0 0 0 No Monitoring
0 0 0 1 Receive Line 2
0 0 1 0 Receive Line 3
0 0 1 1 Receive Line 4
0 1 0 0 Receive Line 5
0 1 0 1 Receive Line 6
0 1 1 0 Receive Line 7
0 1 1 1 Receive Line 8
1 0 0 0 No Monitoring
1 0 0 1 Transmit Line 2
1 0 1 0 Transmit Line 3
1 0 1 1 Transmit Line 4
1 1 0 0 Transmit Line 5
1 1 0 1 Transmit Line 6
1 1 1 0 Transmit Line 7
1 1 1 1 Transmit Line 8