16
Loops
The V.35 interface has pins two pins, one to request an LAL and the
other to request and RDL. If DTE loops are enabled, then when these
pins are asserted, the 3088/C will start a local loopback or a remote
loopback. If DTE loops are disabled, these requests will be ignored.
S2-5 – S2-4: Clock Mode
The 3088 has three clock modes: internal, external, and receive-recover.
OFF
ON
ON
ON
OFF
ON
ON
4352
OFF
ON
ON
ON
OFF
ON
OFF
4416
OFF
ON
ON
ON
OFF
OFF
ON
4480
OFF
ON
ON
ON
OFF
OFF
OFF
4544
OFF
ON
ON
OFF
ON
ON
ON
4608
S2-6
Setting
ON
Enabled
OFF
Disabled
S2-5
S2-4
Clock Mode
Description
ON
ON
Internal
3088 provides both the serial
and the DSL clock
ON
OFF
External
3088 uses the TX clock from
the serial interface for the DSL
clock.
OFF
OFF
Receive-
Recover
3088 uses the RX clock from
the DSL interface for the
serial clock.
OFF
OFF
Reserved
S1-7
S1-6
S1-5
S1-4
S1-3
S1-2
S1-1
Data Rate
(kbps)
