CX28398 Conexant Systems, CX28398 Datasheet - Page 118
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CX28398
Manufacturer Part Number
CX28398
Description
(CX28394 - CX28398) Quad/x16/Octal?T1/E1/J1 Framers
Manufacturer
Conexant Systems
Datasheet
1.CX28398.pdf
(305 pages)
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2.0 Circuit Description
2.6 Loopbacks
2.6.4 Local Framer Loopback
2.6.5 Local Per-Channel Loopback
2-60
The local framer loopback loops the transmit line encoder outputs to the receive
line decoder inputs. Transmitter output is not affected by the activation of this
loopback. The local framer loopback is activated by setting the Local Framer
Loopback (FLOOP) bit in the Loopback Configuration register [LOOP;
addr 014]. It is possible to operate the local framer loopback simultaneously with
the remote line loopback.
The local per-channel loopback loops the TSB PCM and signaling inputs to the
RSB PCM and signaling outputs on a per-channel basis. The local per-channel
PCM loopback is activated by setting RLOOP in the System Bus Per-Channel
Control registers [SBC0 to SBC31; addr 0E0 to 0FF]. The local per-channel
signaling loopback is activated by setting SIG_LP in System Bus Per-Channel
Control registers.
Conexant
Quad/x16/Octal—T1/E1/J1 Framers
CX28394/28395/28398
100054E
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