XRT7250 Datasheet, PDF (440/463 Pages) Exar Corporation – DS3/E3 FRAMER IC

áç
XRT7250
DS3/E3 FRAMER IC
REV. 1.1.1
TABLE 90: 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
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
THE OVERHEAD BIT BEING OUTPUT BY THE
XRT7250
TR Byte - Bit 1
TR Byte - Bit 0
MA Byte - Bit 7
MA Byte - Bit 6
MA Byte - Bit 5
MA Byte - Bit 4
MA Byte - Bit 3
MA Byte - Bit 2
MA Byte - Bit 1
MA Byte - Bit 0
NR Byte - Bit 7
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 207 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.
421