cn8223 Mindspeed Technologies, cn8223 Datasheet - Page 118

• Manufacturer Part Number: cn8223
• Description: Atm Transmitter/receiver With Utopia Interface
• Manufacturer: Mindspeed Technologies

3.0 Registers
3.7 Status Register Overview
Table 3-14. E3 G.832, E4 G.832 LINE_STATUS Bit Definitions
3-32
NOTE(S):
4, 3
Bit
15
14
13
12
11
10
Table 3-14
9
8
7
6
5
2
1
0
One-Second Count
Payload Type
Mismatch
MA FERF
MA FEBE
EM BIP Error
LOC
E3/E4 LOF 2–3
E3/E4 LOF
E3/E4 OOF
E3/E4 AIS
LOS (Input)
“x” = Bit position is undefined and should be ignored.
lists definitions for E3 G.832 and E4 G.832 LINE_STATUS bits.
Name
0
x
x
x
Not used
Set if the one-second timer input is detected.
Set if the received value in the payload type bits of the MA octet do not equal 010 for seven
consecutive frames.
Set if the FERF bit in the MA octet is high in the G.832 E3/E4 frame format.
Set if the FEBE bit in the MA octet is high in the G.832 E3/E4 frame format.
Set if there is an error in the BIP-8 code (EM octet) checking.
Not used
Indicates that HEC cell delineation has been lost. Cell delineation is lost if seven consecutive
HEC errors occur at the current cell delineation position. This bit will also be active for 53-octet
formats using external framers or the parallel interface.
Set if E3/E4 LOF is high for three consecutive one-second latching signals (rising edge on
ONESECI).
Set when E3/E4 OOF is active for 24 consecutive frames.
Set if four consecutive errored A1/A2 framing patterns are observed in the G.832 E3/E4
format.
Not used
Set if an unframed all-1s pattern (less than 0.25% zero content) is detected in the G.832 E3/E4
format.
Not used
Set if a LOS is 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
100046D