PEF22558EV11GXP Lantiq, PEF22558EV11GXP Datasheet - Page 57

• Manufacturer Part Number: PEF22558EV11GXP
• Manufacturer: Lantiq

Specifications of PEF22558EV11GXP

• Screening Level: Industrial
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Lead Free Status / RoHS Status: Compliant

Note:
1. For SF format the protocoll currently used by the carriers for network access to the
2. If In Band Signaling is enabled in transmit direction, all data bits of all 24 time slots of
3. If the signaling code is used for line loop back switching it is so called as” LLB code”
4. An In-Band loop pattern has a minimum length of about 51200 symbols (100 double
12.4
Note: For the ESF format activation and deactivation of loopbacks are performed by
The OctalFALC
codes (bit oriented messages, BOM) on all eight channels independent from each other:
•
•
•
Loop switching (“Out-band loop switching”) is possible by enabling of the BOM
receiver 1 signaling (MODE.BRAC = ´1´ and CCR1.EITS = ´1´) and detection of the
following Out-Band loop messages related to ANSI-T1.403, 1999, table4.
Delta Sheet
customer installation (CI) is an in-band control code. Note that E1/T1repeaters are in
general transparent, so they have not any influence on the in-band signaling.
a frame are overwritten by signaling information (code). In Band Signaling is an
unchannelized signaling method. If the 1. bit of a frame (frame bit) will be also
overwritten it is the so called “unframed” signaling, otherwise it is called “framed”
signaling. This configuration can be done by the register bit LCR1.FLLB.
(line loop back). Two kinds of codes exist: “LLB down code” for deactivation of the
loop and “LLB up code” for activation. The codes are defined in ANSI-T1.403, 1999
in chapter 9.4.1.1 and 9.4.1.2. respectively.
frames).
Detection of Out-band loop codes (BOM).
Generation of Out-band loop codes (BOM) by setting of the appropriate DL-bits by
the micro controller.
Automatic loop switching (activation and deactivation, for remote loop and payload
loop based on detected Out-band loop codes.
using Out-Band messages (BOM) described in ANSI-T1.403, 1999 in chapter
9.4.2.The BOM code has the following format: 11111111 0xxxxxxx0 were the first
bit of every byte is the MSB and the last is the LSB. (11111111 is the BOM flag.)
That´s another ordering as in the ANSI table!!. Sending is done as for HDLC: LSB
first, ´11111111´ first. That´s consistent to the note 1) in the ANSI: “rightmost bit
transmitted first”.
Out-Band Loop Switching (T1/J1 only)
TM
performes the following functionalities regarding the Out-band loop
57
Test and Maintenance
Rev. 2.0, 2005-05-03
OctalFALC
PEF 22558 E
TM