The software reset bit (bit 0) of register 0x00 is not functional.
RA-2. Transmit Path AIS Insert Bit
The TXPAISINS bit (bit 5) of register 0x01 produces both AIS-P and AIS-L.
RA-3. STS-1 Loss of Pointer Mask Bit
The STS1LOPMSK bit (bit 2) of register 0x04 masks both STS1LOP and STS1LOF.
RA-4. STS-1 Loss of Frame Mask Bit
The STS1LOFMSK bit (bit 1) of register 0x04 is not functional.
RA-5. VTLABCOM and VTRFIRDICOM Interrupt Bits
Occasionally, it might require multiple reads to clear the composite interrupt bits VTLABCOM (bit 2 of
register 0x05) and VTRFIRDICOM (bit 4 of register 0x05).
Error Insertion (EI)
EI-1. DS1/E1 Alarm Indication Signal
The device does not insert DS1/E1 AIS towards the STS-1 if there is an LOC condition in the incoming DS1/E1
signal.
EI-2. LOC Condition in E1 Loopback Mode
In the absence of an input clock, the device detects an LOC condition and generates TU-AIS upstream, even if the
loopback path is selected (the loopback signal is overwritten by TU-AIS).
TMPR28051 STS-1/AU-3 (STM-0) Mapper
Device Advisory for Version 5 of the Device
Advisory
August 5, 1999
Error Insertion (EI)
(continued)
EI-3. False S-BIP, L-BIP, and P-BIP Error Insertion
The device transmits S-BIP, L-BIP, and P-BIP errors when configured for automatic insertion of REI, and certain
STS-1 error conditions such as LOS, LOF, LOP-P, S-BIP, L-BIP, and P-BIP are inserted.
VT Alarms (VT)
VT-1. VT Path Payload Label Mismatch
The device reports PLM-V when it detects three consecutive consistent new values for the VT label. This is in com-
pliance with G.783 Section 2.2.2.7 and T1.231 Section 8.1.3.5.2.4.2 specifications, but is not compliant with
GR-253 Section 6.2.1.1.8.C.
VT-2. Failure in the Detection of VT Loss of Pointer Defects
The device also apparently fails to detect an LOP-V defect when it continuously receives a VT pointer word of
6C68 (i.e., a value indicating a VT1.5 with an offset of 104 bytes, versus a maximum valid offset of 103 bytes). In
this case, the device inserts the required DS1 AIS downstream, but does not subsequently declare an LOP-V fail-
ure (nonconformance to GR 253, R6-71).
VT-3. Inappropriate Termination of VT Loss of Pointer Defect Condition
After the device has detected an LOP-V defect, it inappropriately terminates that defect upon receiving two pointer
words containing the same value as the previous valid pointer. According to GR 253, an LOP-V defect must not be
terminated unless a valid pointer is received in three consecutive VT superframes (nonconformance to GR 253,
R6-75).
VT-4. Inappropriate Termination of VT Alarm Indication Signal Defect Condition
After the device has detected an AIS-V defect, it inappropriately terminates that defect upon receiving two pointer
words containing the same value as the previous valid pointer and without a set NDF (e.g., with the N bits set to
0110). According to GR 253, an AIS-V defect must not be terminated unless a normal valid pointer is received in
three consecutive VT superframes, or a valid pointer with a set NDF is received in one VT superframe (nonconfor-
mance to GR 253, R6-183).
For additional information, contact your Microelectronics Group Account Manager or the following:
http://www.lucent.com/micro
INTERNET:
docmaster@micro.lucent.com
E-MAIL:
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FAX 610-712-4106)
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Tel. (65) 778 8833,
FAX (65) 777 7495
CHINA:
Microelectronics Group, Lucent Technologies (China) Co., Ltd., A-F2, 23/F, Zao Fong Universe Building, 1800 Zhong Shan Xi Road, Shanghai
200233 P. R. China
Tel. (86) 21 6440 0468, ext. 316,
FAX (86) 21 6440 0652
JAPAN:
Microelectronics Group, Lucent Technologies Japan Ltd., 7-18, Higashi-Gotanda 2-chome, Shinagawa-ku, Tokyo 141, Japan
Tel. (81) 3 5421 1600,
FAX (81) 3 5421 1700
EUROPE:
Data Requests: MICROELECTRONICS GROUP DATALINE:
Tel. (44) 7000 582 368,
FAX (44) 1189 328 148
Technical Inquiries: GERMANY:
(49) 89 95086 0
(Munich), UNITED KINGDOM:
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(Madrid)
Lucent Technologies Inc. reserves the right to make changes to the product(s) or information contained herein without notice. No liability is assumed as a result of their use or application. No
rights under any patent accompany the sale of any such product(s) or information.
TMPR28051 STS-1/AU-3 (STM-0) Mapper Device Advisory for Version 5 of the Device
Paired Cable; Number of Conductors:12; Conductor Size AWG:24; No. Strands x Strand Size:7 x 32; Jacket Material:Polyolefin; Number of Pairs:6; Impedance:100ohm; Voltage Nom.:300V RoHS Compliant: Yes
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