tfra08c13 ETC-unknow, tfra08c13 Datasheet - Page 47

• Manufacturer Part Number: tfra08c13
• Description: Tfra08c13 Octal T1/e1 Framer
• Manufacturer: ETC-unknow

Preliminary Data Sheet
October 2000
Lucent Technologies Inc.
Lucent Technologies Inc.
Frame Formats
Transparent Framing Format
The transmit framer can be programmed to transparently transmit 256 bits of system data to the line. The transmit
framer must be programmed to either transparent framing mode 1 or transparent framing mode 2 (see Table 136.
Framer Reset and Transparent Mode Control Register (FRM_PR26) (Y7A)).
In transparent mode 1 or mode 2, the transmit framer transmits all 256 bits of the RCHI payload unmodified to the
line. Time slot 1 of the RCHI, determined by the CHIFS signal, is inserted into the FAS/NOT FAS time slot of the
transmit line interface.
Frame integrity is maintained in both the transmit and receive framer sections.
In transparent framing mode 1, the receive framer is forced not to reframe on the receive line data. Other than
bipolar violations and unframed AIS monitoring, there is no processing of the receive line data. The entire receive
line payload is transmitted unmodified to the CHI.
In transparent framing mode 2, the receive framer functions normally on the receive line data. All normal monitoring
of receive line data is performed and data is transmitted to the CHI as programmed.
TIME SLOT 1
TIME SLOT 1
TIME SLOT 2 TIME SLOT 3
TIME SLOT 2 TIME SLOT 3
(continued)
Figure 12. CEPT Transparent Frame Structure
TIME SLOT 31 TIME SLOT 32
TIME SLOT 31 TIME SLOT 32
TFRA08C13 OCTAL T1/E1 Framer
32 TIME-SLOT CHI FRAME
32 TIME-SLOT LINE FRAME
5-5988(F)
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