
Agere Systems Inc.
181
Data Sheet
May 2001
155/622/2488 Mbits/s Data Interface
TDAT042G5 SONET/SDH
Register Descriptions
(continued)
OHP Registers
(continued)
Table 82. Registers 0x0430, 0x0432,
0x0434: Transmit Control Port [B
—
D] (R/W)
Reset default of registers = 0x0003.
* TJ0INS = 1 always sets J0 to the TJ0DINS values regardless of the value of TTOAC_J0.
Address
(Hex)
0430, 0432,
0434
Bit #
Name
Function
Reset
Default
0
15
—
Reserved.
This bit must be written to its reset
default value (0).
Transmit J0 Insert Control Channel [B
—
D].
Control bit, when set to a logic 1, insert the
value in TJ0DINS[A
—
D][16:1][7:0] into the out-
going J0 bytes; otherwise, the insert value
depends on TTOAC_J0[A
—
D] registers.
TJ0INS[A] is valid in STS-48/STM-16 mode.*
Transmit TOAC J0 Byte Control Channel
[B
—
D].
Control bit, when set to logic 0, causes
the default value 00000000 for SONET or
11111111 for SDH to be inserted into the J0
byte in the transmit frame. Setting this bit to
logic 1 causes the TTOAC value to be inserted
into the J0 byte. TTOAC_J0[A] is valid for STS-
48/
STM-16 mode.*
Transmit TOAC Odd or Even Parity Monitor
Channel [B
—
D].
When set to 1, even parity is
checked for transmit TOAC channels; other-
wise, odd parity is checked.
Transmit TOAC Byte Control Channel
[B
—
D].
Control bit, when set to logic 0, causes
the default value 00000000 for SONET or
11111111 for SDH to be inserted into those
overhead bytes within the transmit frame that
do not have all specific insert control bits. Set-
ting this bit to logic 1 causes the TTOAC value
to be inserted into those overhead bytes not
having specific insert control bits.
TTOAC_INS[A] is valid for STS-48/STM-16
mode.
Transmit TOAC E2 Byte Control Channel
[B
—
D].
Control bit, when set to logic 0, causes
the default value to be inserted into the E2 byte
in the transmit frame. Setting this bit to logic 1
causes the TTOAC value to be inserted into the
E2 byte. TTOAC_E2[A] is valid for STS-48/
STM-16 mode.
14
TJ0INS[B
—
D]
0
13
TTOAC_J0[B
—
D]
0
12
TTOAC_OEPMON[B
—
D]
0
11
TTOAC_INS[B
—
D]
0
10
TTOAC_E2[B
—
D]
0