tdat04622 ETC-unknow, tdat04622 Datasheet - Page 258

• Manufacturer Part Number: tdat04622
• Description: Tdat Sonet/sdh 155/622/2488 Mbits/s Data Interfaces
• Manufacturer: ETC-unknow

TDAT042G5 SONET/SDH
155/622/2488 Mbits/s Data Interface
Register Descriptions
DE Registers
Table 127. Register 0x10A5: ATM X31 Frame Control (R/W)
Reset default of register = 0x01C8.
Table 128. Register 0x10A6: ATM X31 V/W Values (R/W)
Reset default of register = 0x0210.
230
Address
Address
(Hex)
(Hex)
10A5
10A6
15—12
15—12
11—6
11—6
Bit #
Bit #
(continued)
5—0
5—0
—
—
ATM_X31VW[11:0]
ATM_X31[11:0]
(continued)
Name
Name
—
—
—
—
—
—
ATM X31 Framer Control.
Reserved. These bits must be written to their
reset default value (0x0).
X31-Alpha. This register will define the alpha
value for the X31 alpha-delta framer which is
the number of consecutive incorrect ATM cells
that must be received in order to transition from
the sync state to the hunt state.
X31-Delta. This register will define the delta
value for the X31 alpha-delta framer which is
the number of consecutive correct ATM cells
that must be received in order to transition from
the presync state to the sync state.
X31 V and W Values.
Reserved. These bits must be written to their
reset default value (0x0).
X31 V Value. This register specifies the value
the confidence counter in the X
synchronization process must drop below in
order to transition to the acquisition state from
the verification state. The confidence counter is
incremented every time the local scrambler
samples match the received samples, and
decremented when they do not (see standard
I.432).
X31 W Value. This register specifies the value
the confidence counter in the X
synchronization process must drop below in
order to declare loss of synchronization and
transition to the acquisition state. The
confidence counter is incremented every time
the local scrambler samples match the received
samples, and decremented when they do not
(see standard I.432).
Function
Function
31
31
scrambler
scrambler
Agere Systems Inc.
Data Sheet
May 2001
Default
0x01C8
Default
000111
001000
0x0210
001000
010000
Reset
Reset
0x0
0x0