
PRELIMINARY
XRT86SH328
153
REV. P1.0.6
28-CHANNEL DS1/E1 FRAMER/LIU WITH DS3 MUX & VT-MAPPER - SONET APPLICATIONS
BIT [7:2] - Unused
BIT [1:0] - J1 Byte Insertion_Method[1:0]
These READ/WRITE bit-fields are used to specify the method that the user will use to insert the J1 byte into the
outbound STS-1/STS-3 SPE. The relationship between the contents of these bit-fields and the corresponding J1 Byte
Insertion Method is presented below.
BIT [7:4] - NDF (New Data Flag) Bits
These READ/WRITE bit-fields are used provide the value that will be loaded into the NDF bit-field (of the H1 byte),
whenever a 0 to 1 transition occurs in BIT 5 (Pointer Force) within the Transmit STS-1/STS-3 Path - Transmit Path
Control Register (Address Location= 0x07B7).
BIT [3:2] - SS Bits
These READ/WRITE bit-fields is used to provide the value that will be loaded into the SS bit-fields (of the H1 byte)
whenever a 0 to 1 transition occurs in BIT 5 (Pointer Force) within the Transmit STS-1/STS-3 Path - Transmit Path
Control Register (Address Location= 0x07B7).
The SS bits have no functional value, within the H1 byte.
BIT [1:0] - H1 Pointer Value[1:0]
These two READ/WRITE bit-fields, along with the constants of the Transmit STS-1/STS-3 Path - Transmit Arbitrary H2
Pointer Register (Address Location= 0x07C3) are used to provide the contents of the Pointer Word.
These two READ/WRITE bit-fields are used to define the value of the two most significant bits within the Pointer word.
Whenever a 0 to 1 transition occurs in BIT 5 (Pointer Force) within the Transmit STS-1/STS-3 Path - Transmit Path
Control Register (Address Location= 0x07B7), the values of these two bits will be loaded into the two most significant
T
ABLE
203: T
RANSMIT
STS-1/STS-3 P
ATH
- SONET P
ATH
J1 C
ONTROL
R
EGISTER
(A
DDRESS
L
OCATION
=
0
X
07BB)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
Unused
Insertion_Method[1:0]
R/O
R/O
R/O
R/O
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0
Insertion Method
J1 B
YTE
I
NSERTION
M
ETHOD
[1:0]
R
ESULTING
I
NSERTION
M
ETHOD
00
Insert the value 0x00
01
Not Valid
10
Insert from the Transmit SONET Path - Transmit J1 Byte Value Register (Address
Location= 0x0793)
11
Insert via the TxPOH_n input port
T
ABLE
204: T
RANSMIT
STS-1/STS-3 P
ATH
- T
RANSMIT
A
RBITRARY
H1 P
OINTER
R
EGISTER
(A
DDRESS
L
OCATION
=
0
X
07BF)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
NDF Bits
SS Bits
H1 Pointer Value
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
0
0
0
0
0
0
0
0