cx28250 Mindspeed Technologies, cx28250 Datasheet - Page 63

• Manufacturer Part Number: cx28250
• Description: Cx28250 Atm Physical Interface Phy Devices
• Manufacturer: Mindspeed Technologies

CX28250
ATM Physical Interface (PHY) Devices
Table 2-12. ERDI Interrupt (CX28250-26 only)
28250-DSH-002-C
2.3.4.5 InsPthAIS Input
2.3.4.6 PFOut Output
Pin (Insert Path AIS)
000
001
010
011
100
101
110
111
Pin (Path Fail)
000
yes
yes
yes
yes
yes
no
no
no
enhanced as follows in the -26 version of the device:
GR-253 requirements outlined.
When asserted high, this input forces the CX28250 to generate an AIS-P, which
has the same effect as setting the InsPthAIS, bit 4 of the TXPTH register.
This output is controlled by the EnPFOut register, 0x6F. If any of the status bits
shown in
enabled status bits are low.
Path RDI (RDI-P) interrupt generation and RXG1 byte monitoring has been
1.
2.
3.
4.
5.
Table 2-12
001
yes
yes
yes
yes
yes
no
no
no
A received RDI-P signal is considered valid when the same value in Bit 5,
6, 7 of the G1 byte is received in 10 consecutive frames
The following RDI-P signals are considered “non defect-indicating”: 000,
011 (non-enhanced), and 001 (enhanced)
The following RDI-P signals are considered “defect-indicating”: 100, 111
(non-enhanced), and 010, 101, 110 (enhanced)
The status bit (in RXPTH) now reflects the state of the last valid RDI-P
signal received (i.e. defect, or no defect)
Interrupts are generated only when a newly received RDI-P signal satisfies
one of the following, as compared to the previous RDI-P signal:
a.
b.
Mindspeed Technologies
Figure 2-14
If the newly received RDI-P signal represents a transition of
“defect-indicating” state (i.e., from “non defect-indicating” to
“defect-indicating”, or vis-a-vis)
A new (different) defect-indicating signal has been received as
compared to the previous defect-indicating signal.
summarizes RDI-P signal transitions in accordance with the
010
yes
yes
yes
yes
yes
yes
yes
no
are asserted, the PFOut pin goes high and stays high until all
011
yes
yes
yes
yes
yes
no
no
no
From G1[5:7]
2.3 SONET/SDH Framer and Overhead Processor
100
yes
yes
yes
yes
yes
yes
no
no
™
101
yes
yes
yes
yes
yes
yes
yes
no
2.0 Functional Description
110
yes
yes
yes
yes
yes
yes
yes
no
111
yes
yes
yes
yes
yes
yes
no
no
2-27