
XRT86SH221
PRELIMINARY
189
SDH-TO-PDH FRAMER/MAPPER WITH INTEGRATED 21-CHANNEL E1 SH LIU
REV. P1.0.5
BIT 7 - Reserved
BIT 6 - STM-N Overhead Insert
This READ/WRITE bit-field permits the user to configure the TxSOH input port to insert the SOH for the outbound STM-
0 or STM-1 signal.
0 - Disabled
1 - Enabled
BIT 5 - E2 Byte Insert Method
This READ/WRITE bit-field is used to specify the source of the contents of the E2 byte, within the transmit output STM-
0 or STM-1 data stream.
0 - E2 Byte is obtained from TxSOH Serial Input Port.
1 - E2 Byte is obtained from the contents within the Transmit Section - E2 Byte Value register (Address Location =
0x0747). This selection provides the user with software control over the value of the outbound E2 byte.
BIT 4 - E1 Byte Insert Method
This READ/WRITE bit-field is used to specify the source of the contents of the E1 byte, within the transmit output STM-
0 or STM-1 data stream.
0 - E1 Byte is obtained from TxSOH Serial Input Port.
1 - E1 Byte is obtained from the contents within the Transmit Section - E1 Byte Value register (Address Location=
0x0743). This selection provides the user with software control over the value of the outbound E1 byte.
BIT 3 - F1 Byte Insert Method
This READ/WRITE bit-field is used to specify the source of the contents of the F1 byte, within the transmit output STM-
0 data stream.
0 - F1 Byte is obtained from TxSOH Serial Input Port.
1 - F1 Byte is obtained from the contents within the Transmit Section - F1 Byte Value register (Address Location=
0x073F). This selection provides the user with software control over the value of the outbound F1 byte.
BIT 2 - S1 Byte Insert Method
This READ/WRITE bit-field is used to specify the source of the contents of the S1 byte, within the transmit output STM-
0 data stream.
0 - S1 Byte is obtained from TxSOH Serial Input Port.
1 - S1 Byte is obtained from the contents within the Transmit Section - S1 Byte Value register (Address Location=
0x073B). This selection provides the user with software control over the value of the outbound S1 byte.
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 STM-0 data stream.
0 - K1 and K2 Bytes are obtained from TxSOH Serial Input Port.
1 - K1 and K2 Bytes are obtained from the contents within the Transmit Section - K2 Byte Value register - Byte 1
(Address Location= 0x072E) and the Transmit Section - K1 Byte Value register - Byte 0 (Address Location= 0x072F).
This selection provides the user with software control over the value of the outbound K1 and K2 bytes.
T
ABLE
149: T
RANSMIT
STM-0 S
ECTION
C
ONTROL
R
EGISTER
1 (TSCR1 0
X
0702
H
)
BIT7
BIT6
BIT5
BIT4
BIT3
BIT2
BIT1
BIT0
Reserved
STM-N
Overhead
Insert
E2 Insert
Method
E1 Insert
Method
F1 Insert
Method
S1 Insert
Method
K1K2 Insert
Method
M0M1 Insert
Method [1]
RO
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0