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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)