XRT74L73 Datasheet, PDF (467/488 Pages) Exar Corporation – 3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER

PRELIMINARY
XRT74L73
3 CHANNEL, ATM UNI/PPP DS3/E3 FRAMING CONTROLLER
REV. P1.0.1
TABLE 106: THE RELATIONSHIP BETWEEN THE NUMBER OF RXOHENABLE OUTPUT PULSES (SINCE RXOHFRAME
WAS LAST SAMPLED "HIGH") TO THE E3 OVERHEAD BIT, THAT IS BEING OUTPUT VIA THE RXOH OUTPUT PIN
NUMBER OF RXOHENABLE OUTPUT PULSES
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
THE OVERHEAD BIT BEING OUTPUT BY THE
XRT74L73
NR Byte - Bit 6
NR Byte - Bit 5
NR Byte - Bit 4
NR Byte - Bit 3
NR Byte - Bit 2
NR Byte - Bit 1
NR Byte - Bit 0
GC Byte - Bit 7
GC Byte - Bit 6
GC Byte - Bit 5
GC Byte - Bit 4
GC Byte - Bit 3
GC Byte - Bit 2
GC Byte - Bit 1
GC Byte - Bit 0
Figure 214 presents the typical behavior of the Re-
ceive Overhead Data Output Interface block, when
Method 2 is being used to sample the incoming E3
overhead bits.
468