HDSL Framer/Mapper for 1168 kbps Applications
—
LXP710
Datasheet
39
Note:
INT6MS interrupt pin corresponds to the interrupt of Mux and Demux 6MS status bits in the
6MSINTSTAT register and triple-echo EOC status bits in IND_3EOCSTAT register.
Indicator and Triple Echo EOC Interrupt Enable Register
Address: 1F
Abbreviation: IND_3EOCINTEN
Read/Write
Indicator and Triple Echo EOC Interrupt Status Register
When a logic
‘
1
’
is written to these registers, these status bits are cleared unless the associated
overhead bit is still active.
Address: 20
Abbreviation: IND_3EOCINTSTAT
Read/Write
2
L3DX6MS
0
Loop 3 demux 6ms interrupt.
1
L2DX6MS
0
Loop 2 demux 6ms interrupt.
0
L1DX6MS
0
Loop 1 demux 6ms interrupt.
Table 32. 6ms Interrupt Status Register (Continued)
Bit
Name
Default
Description
Table 33. Indicator Bits & Triple Echo EOC Enable Register
Bit
Name
Default
Description
<7:6>
n/a
0
Not used; Always read zero.
<5:3>
EIL<3:1>INDCR
0
Enable interrupt on loop <3:1> ready to receive indicator bit.
<2:0>
EIL<3:1>CMP
0
Enable Interrupt on Loop <3:1> EOC Triple-Echo Message Compare. When
High, in addition to enabling the Triple-Echo Message interrupt, the integrated
EOC message (which is updated only when a Triple_Echo message is valid) is
output. When Low, the non-integrated EOC message (updated every 6 ms) is
sent to the receive EOC message register on each loop.
Table 34. Indicator Bits & Triple EOC Status Register
Bit
Name
Default
Description
<7:6>
n/a
0
Not used; Always read zero.
<5:3>
L<3:1>INDCR
0
Loop <3:1> Ready to Receive Indicator. This status bit is active to indicate to
the distant HDSL transceiver that it is ready to receive data.
<2:0>
L<3:1>EOCCMP
0
Loop <3:1> EOC Triple-Echo Message Compare Detected. This status bit is
active only when a new message has been received three consecutive
times.