RELEASED
PM73123 AAL1GATOR-8
DATASHEET
PMC-2000097
ISSUE 2
8 LINK CES/DBCES AAL1 SAR
Figure 56 SRTS Data
SYSCLK
CGC_DOUT(3:0)
CGC_LINE(4:0)
SRTS_STB
DATA
LINE
ADAP_STB
9.3.3.3 Channel Underrun Status Output
Figure 57 shows an example of the channel underrun status being reported on
the CGC Interface. In this example for a structured line, the line number is 19
(A1SP = 2, local line number = 3) the channel pair is 7 (channels 14 and 15), and
the high channel (channel 15) is in underrun while the low channel (channel 14)
is in normal mode. For an unstructured line, there is no per-channel status, only
per-line status; Channel(4:1) can be ignored, and both Underrun_h and
Underrun_l will have the same value – either can be used. These values are
encoded into the 4 data words following the format shown in Table 6.
Status is only reported when a channel enters or exits underrun.
Figure 57 Channel Status Functional Timing
SYSCLK
CGC_DOUT(3:0)
CGC_LINE(4:0)
SRTS_STB
3
F
7
8
2
E
D
C
ADAP_STB
PMC-SIERRA, INC. PROPRIETARY AND CONFIDENTIAL
141
PMC [ PMC-SIERRA, INC ]
