DS3163 Maxim Integrated Products, DS3163 Datasheet - Page 167

• Manufacturer Part Number: DS3163
• Description: IC TRPL ATM/PACKET PHY 400-PBGA
• Manufacturer: Maxim Integrated Products

Specifications of DS3163

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 400-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10.10.5.5 Transmit C-bit DS3 AIS/Idle Generation
C-bit DS3 AIS/Idle generation overwrites the data stream with AIS or an Idle signal. If transmit Idle is enabled, the
data stream payload is forced to a 1100 pattern with two ones immediately following each DS3 overhead bit. M
M
overwritten with the values one, zero, zero, and one (1001) respectively. X
P
If transmit AIS is enabled, the data stream payload is forced to a 1010 pattern with a one immediately following
each DS3 overhead bit. M
F
are overwritten with 11. P
output DS3 frame. And, C
10.10.5.5.1 Receive C-bit DS3 Frame Format
The DS3 frame format is shown in
referred to as the far-end SEF/AIS bits). P
are the multiframe alignment bits that define the multiframe boundary. F
define the subframe boundary. Note: Both the M-bits and F-bits define the DS3 frame boundary. C
Application Identification Channel (AIC). C
Far-End Alarm and Control (FEAC) signal. C
are the C-bit parity bits used for path error monitoring. C
used for remote path error monitoring. C
C
10.10.5.5.2 Receive C-bit DS3 Overhead Extraction
Overhead extraction extracts all of the DS3 overhead bits from the C-bit DS3 frame. All the DS3 overhead bits X
X
P
addition, the Application Identification Channel (AIC), which is stored in a register bit, is determined from the C
The AIC is set to one (C-bit format) if the C
to zero (M23 format) if the C
stored AIC bit must not change when an LOS, OOF, or AIS condition is present. The C
receive FEAC controller. The C
10.10.6 M23 DS3 Framer/Formatter
10.10.6.1 Transmit M23 DS3 Frame Processor
The M23 DS3 frame format is shown in
are the Remote Defect Indication (RDI) bits (also referred to as the far-end SEF/AIS bits). P
bits used for line error monitoring. M
alignment bits. C
tributary #X. The X-bit, P-bit, M-bit, C-bit, and F-bit positions are overhead bits, and the other bit positions in the
DS3 frame are payload bits.
X1
1
2
2
62
2
, P
, P
, C
, and M
, F
, and C
2,
1
31
X2
, P
C
, C
, F
31
2
, M
32
, C
3
X3
63
, and C
bits are overwritten with the values zero, one, and zero (010) respectively. F
, and F
are unused, and have a value of one. C
X
32
, F
, and C
XY
11
, and C
33
X4
is the Application Identification Channel (AIC). C
bits are output as an error indication (modulo 2 addition of the calculated parity and the bit). In
33
bits are overwritten with the values one, zero, zero, and one (1001) respectively. X
are overwritten with the calculated payload parity from the previous output DS3 frame.
1
X1
XY
, P
1
, M
, C
are output on the receive overhead interface (ROH, ROHSOF, and ROHCLK). The P
2,
11
2
X2
C
, and M
51
31
, and C
bit is set to zero in four of the last thirty-one consecutive multiframes. Note: The
, C
, C
52
32
Figure
, and C
, and C
3
1
X3
Figure
, M
bits are overwritten with the values zero, one, and zero (010) respectively.
51
(X ≠ 3) are overwritten with 000. AIS will overwrite a transmit Idle signal.
1
12
, C
11
and P
2
21
53
10-38. X
, and M
is reserved for future network use, and has a value of one. C
33
bit is set to one in thirty-one consecutive multiframes. The AIC is set
, C
52
bits are sent to the receive HDLC overhead controller.
10-38.
are overwritten with the calculated payload parity from the previous
, and C
22
2
, and C
are the parity bits used for line error monitoring. M
71
3
1
, C
Table 10-33
are the multiframe alignment bits. F
and X
53
72
41
23
are the path maintenance data link (or HDLC) bits. C
, and C
, C
are unused, and have a value of one. C
2
42
are the Remote Defect Indication (RDI) bits (also
, and C
73
defines the framing bits for M23 DS3. X
are unused, and have a value of one.
X1
, C
43
are the Far-End Block Error (FEBE) bits
XY
X2
1
, and C
are the subframe alignment bits that
and X
2
X3
are overwritten with 11. And,
are the stuff control bits for
X1
, F
13
X2
1
bit is sent over to the
, F
XY
and P
X3
are the subframe
, and F
31
2
, C
are the parity
1
, M
32
X4
2
, and C
11
1
, and M
1
13
bits are
and X
and X
is the
is the
11
bit.
61
33
1
1
1
2
3
2
,
,
,
,