PSB2115HV1.2 Lantiq, PSB2115HV1.2 Datasheet - Page 97

• Manufacturer Part Number: PSB2115HV1.2
• Manufacturer: Lantiq

Specifications of PSB2115HV1.2

• Lead Free Status / Rohs Status: Supplier Unconfirmed

– loop at the analog end of the S interface;
– special loops are programmed via C2C1-0 and C1C1-0 bits (register SPCR)
– transmission of special test signals on the S/T interface according to the modified AMI
Semiconductor Group
code are initiated via a C/I command written in CIX0 register (cf. chapter 3.6).
TE / LT-T mode
Test loop 3 is activated with the C/I channel command Activate Request Loop
(ARL). An S interface is not required since INFO3 is looped back internally to the
receiver. When the receiver has synchronized itself to this signal, the message "Test
Indication" (or "Awake Test Indication") is delivered in the C/I channel. No signal is
transmitted over the S interface.
In the test loop mode the S interface awake detector is enabled, i.e. if a level is
detected (e.g. Info 2/Info 4) this will be reported by the Awake Test Indication (ATI).
The loop function is not effected by this condition and the internally generated 192-
kHz line clock does not depend on the signal received at the S interface.
LT-S mode
Test loop 2 is likewise activated over the IOM interface with Activate Request Loop
(ARL). No S line is required. INFO4 is looped back internally to the receiver and also
sent to the S interface. When the receiver is synchronized, the message "AIU" is
sent in the C/I channel. In the test loop mode the S interface awake detector is
disabled, and echo bits are set to logical "0".
Two kinds of test signals may be sent by the IPAC:
• single pulses and
• continuous pulses.
The single pulses are of alternating polarity, one S interface bit period wide, 0.25 ms
apart, with a repetition frequency of 2 kHz. Single pulses can be sent in all
applications. The corresponding C/I command in TE, LT-S and LT-T applications is
SSZ (Send single zeros).
Continuous pulses are likewise of alternating polarity, one S-interface bit period
wide, but they are sent continuously. The repetition frequency is 96 kHz. Continuous
pulses may be transmitted in all applications. This test mode is entered in LT-S,
LT-T and TE applications with the C/I command SCZ.
97
Functional Description
PSB 2115
PSF 2115
11.97