BT8222EPFF CONEXANT [Conexant Systems, Inc], BT8222EPFF Datasheet - Page 120
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BT8222EPFF
Manufacturer Part Number
BT8222EPFF
Description
ATM Transmitter/Receiver with UTOPIA Interface
Manufacturer
CONEXANT [Conexant Systems, Inc]
Datasheet
1.BT8222EPFF.pdf
(161 pages)
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3.0 Registers
3.7 Status Register Overview
Table 3-16
Table 3-16. External Framer, 57-Octet Mode, LINE_STATUS Bit Definitions
3-34
NOTE(S):
4–1
Bit
15
14
13
12
11
10
9
8
7
6
5
0
One Second Count
Invalid FEBE
FEBE All-1s
PLCP FEBE Error
PLCP BIP Error
PLCP Frame Error
PLCP Yellow
PLCP LOF 2–3
PLCP LOF
PLCP OOF
LOS (Input)
“x” = Bit position is undefined and should be ignored.
lists definitions for External Framer, 57-Octet Mode, LINE_STATUS bits.
Ext. Framer
(57 octet)
0
x
Not used
Set if the one-second timer input is detected.
Set if an invalid FEBE is detected (9–F).
Set if an invalid FEBE = F is detected.
Set if any valid non-0 FEBE value (values 0x1–0x8) is detected in the G1 octet in 57-octet PLCP
formats
Set if there is an error in the BIP-8 code (B1 octet) checking in 57-octet PLCP formats.
Set if there is an error in either the A1 or A2 octets of the PLCP frame pattern for 57-octet PLCP
formats.
PLCP yellow indicates that the yellow alarm bit in the G1 octet (57-octet modes) has been active
for 10 consecutive PLCP frames.
Set if PLCP LOF is high for three consecutive one-second latching signals (rising edge on
ONESECI).
Set when PLCP OOF is active for eight consecutive PLCP frames.
Set if the PLCP OOF state has been entered for 57-octet PLCP formats.
Not used
Set if there is a LOS detected by the internal B3ZS/HDB3 decoder or if the RXLOS~ input pin is
active low. Internal LOS detection is the occurrence of 175
decoding. The RXLOS~ input pin should be tied high unless an external line interface unit
provides an active low LOS indication.
Conexant
ATM Transmitter/Receiver with UTOPIA Interface
Description
±
75 zeros prior to B3ZS/HDB3
CN8223
100046C
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