tdat04622 ETC-unknow, tdat04622 Datasheet - Page 274

• 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 148. Registers 0x1400—0x1403: SDL State Registers (RO)
Reset default of registers = 0x0000.
246
1400, 1401,
1402, 1403
Address
(Hex)
15—4
Bit #
3—2
1—0
(continued)
—
SDL_ST[0—3]
(continued)
Name
—
—
—
SDL State Channel [0—3]. These registers
describe the SDL framer and scrambler states.
Reserved. These bits must be written to their
reset default value (0x000).
SDL Frame State. Indicates the frame state of
each channel.
SDL_ST[0—3][3:2] = 00. Out-of-Frame. The
SDL framer is in search of a successful SDL
framing.
SDL_ST[0—3][3:2] = 01. Presync. The SDL
framer has transitioned from the out of frame to
the presync state. The SDL framer has
successfully framed one SDL header.
SDL_ST[0—3][3:2] = 10. Sync. The SDL
framer has transitioned from the presync to the
sync state. The framer has successfully
detected the second consecutive SDL packet.
The SDL framer is correctly framed on the SDL
signal. The SDL framer remains in the sync
state until a bad packet frame is detected.
Detection of a bad packet frame places the SDL
framer in the out-of-frame state.
SDL_ST[0—3][3:2] = 11. Undefined.
SDL Scram State. Indicates the X48 sync state
of each channel.
SDL_ST[0—3][1:0] = 00. Hunt. The SDL
scrambler has yet to detect a valid scrambler
state.
SDL_ST[0—3][1:0] = 01. Sync. The SDL
scrambler is in sync.
SDL_ST[0—3][1:0] = 10. Postsync. The SDL
scrambler was in sync, but detected an SDL
state that did not match the expected state. If
two consecutive nonmatching states are
detected, then (1) the SDL framer is reset with
the scrambler state received in the bit stream,
and (2) a sync slip interrupt is generated.
SDL_ST[0—3][1:0] = 11. Undefined.
Function
Agere Systems Inc.
Data Sheet
May 2001
Default
0x0000
Reset
0x000
00
00