
XRT86SH328
PRELIMINARY
136
28-CHANNEL DS1/E1 FRAMER/LIU WITH DS3 MUX & VT-MAPPER - SONET APPLICATIONS
REV. P1.0.6
BIT 1 - K1K2 Byte Insert Method
This READ/WRITE bit-field is used to specify the source of the contents of the K1 and K2 bytes, within the transmit
output STS-1 or STS-3 data stream.
0 - K1 and K2 Bytes are obtained from TxTOH Serial Input Port.
1 - K1 and K2 Bytes are obtained from the contents within the Transmit Transport - K1K2 Byte Value register - Byte 1
(Address Location= 0x072E) and the Transmit Transport - K1K2 Byte Value register - Byte 2 (Address Location=
0x072F). This selection provides the user with software control over the value of the outbound K1 and K2 bytes.
BIT 0 - M0M1 Insert Method
This READ/WRITE bit-field, along with M0M1 Insert Method[0] (located in the Transmit Transport - SONET Control
Register - Byte 0) are used to specify the source of the contents of the M0/M1 byte, within the transmit output STS-1 or
STS-3 data stream. The relationship between these two bit-fields and the corresponding source of the M0/M1 byte is
presented below.
BIT 7 - M0M1 Insert Method
This READ/WRITE bit-field, along with M0M1 Byte Insert Method[1] (located in the Transmit STS-1/STS-3 Transport -
SONET Control Register - Byte 1) are used to specify the source of the contents of the M0/M1 byte, within the transmit
output STS-1 or STS-3 data stream. The relationship between these two bit-fields and the corresponding source of the
M0/M1 byte is presented below.
Source of M)/M1 Byte
M0M1 I
NSERT
M
ETHOD
[1:0]
S
OURCE
OF
M0/M1 B
YTE
0
0
From the Receive STS-1/STS-3 TOH Processor block (B2 byte (or BIP-24) Error Count)
0
1
Obtained from the contents of the Transmit STS-1/STS-3 Transport - M0/M1 Byte Value
register (Address Location= 0x0737).
1
0
M0/M1 byte is obtained from the TxTOH Serial Input Port.
1
1
From the Receiver STS-1/STS-3 TOH Processor block (B2 byte (or BIP-24) Error Count).
T
ABLE
174: T
RANSMIT
STS-1/STS-3 T
RANSPORT
- T
RANSMIT
C
ONTROL
R
EGISTER
- B
YTE
0 (A
DDRESS
L
OCATION
=
0
X
0703)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
M0M1 Insert
Method[0]
Unused
RDI-L Force
AIS-L Force
LOSForce
Scramble
Enable
B2 Error
Insert
A1A2 Error
Insert
R/W
R/O
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
Source of M0/M1 Byte
M0M1 B
YTE
I
NSERT
M
ETHOD
[1:0]
S
OURCE
OF
M0/M1 B
YTE
0
0
From the Receive STS-1/STS-3 TOH Processor block (B2 Byte Error Count)
0
1
Obtained from the contents of the Transmit STS-1/STS-3 Transport - M0/M1 Byte Value reg-
ister (Address Location= 0x0737).
1
0
M0/M1 byte is obtained from the TxTOH Serial Input Port.
1
1
From the Receive STS-1/STS-3 TOH Processor block (B2 Byte Error Count).