DJLXT380LE.B4 Cortina Systems Inc, DJLXT380LE.B4 Datasheet - Page 46

• Manufacturer Part Number: DJLXT380LE.B4
• Manufacturer: Cortina Systems Inc

Specifications of DJLXT380LE.B4

• Lead Free Status / RoHS Status: Not Compliant

LXT380 — Octal E1 G.703 Transceiver
4.4.5
46
Figure 16. Analog Test Port Application
The Analog Test Port can be used to verify continuity across the coupling transformer’s primary
winding. By applying a stimulus to the AT1 input, a known voltage will appear at AT2 for a given
load. This, in effect, tests the continuity of a receive or transmit interface. See
Instruction Register, IR
The IR is a 3 bit shift register that loads the instruction to be performed. The instructions are shifted
LSB first.
Table 25
1K
1K
RRING6
TRING6
shows the valid instruction codes and the corresponding instruction description.
AT2
AT1
RRING7
TRING7
RTIP6
TTIP6
RTIP7
RRING0
TTIP7
RTIP0
Transceiver 7
Transceiver 6
Transceiver 0
ASR Register
JTAG Port
Figure
16.
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