CN8330EPD CONEXANT [Conexant Systems, Inc], CN8330EPD Datasheet - Page 98
CN8330EPD
Manufacturer Part Number
CN8330EPD
Description
DS3/E3 Framer with 52 Mbps HDLC Controller
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.CN8330EPD.pdf
(101 pages)
- Current page: 98 of 101
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Appendix B
B.3 HDLC Formatter Mode Support While Configured for E3 Framing
B-2
B.3 HDLC Formatter Mode Support While
Configured for E3 Framing
This mode was previously selected by configuring the following bits: CR00.3=1
(E3Frm), CR04.3 (ParaEn) and CR05.1=0 (DisPPDL).If this mode is selected, the
zero insertion function of the HDLC formatter incorrectly inserts an extra zero
when the transmitted HDLC packet contains stuffed zeros that overlap the 16-bit
E3 overhead. This transmitter malfunction causes the HDLC receiver to interpret
the extra zero as data which results in an FCS errored packet. This problem
prevents any customer from developing an E3 framed HDLC mode application.
Notice that parallel data still functions properly in E3 mode if CR05.1=1
(DisPPDL).
formatter mode and another device exclusively in E3 mode same results can be
achieved.
Workaround: By using two CN8330 devices with one operating in HDLC
Conexant
DS3/E3 Framer with 52 Mbps HDLC Controller
CN8330
100441E
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