peb2035 ETC-unknow, peb2035 Datasheet - Page 33

• Manufacturer Part Number: peb2035
• Description: Communications Advanced Cmos Frame Aligner
• Manufacturer: ETC-unknow

General Signaling
Signaling
Note: CAS multiframe synchronization and synthesis is not performed by the ACFA.
Doubleframe Format
The framing structure is defined by the contents of time-slot 0 (refer to table 2).
Table 2
Allocation of Bits 1 to 8 of Time-Slot 0
Notes: 1. S
(*) Note: As a special extension for double frame format, the S
Semiconductor Group
Alternate
Frames
Frame Containing the
Frame Alignment Signal
Frame not Containing the
Frame Alignment Signal
S
E bits in accordance with CCITT Blue Book G.704.
CCS
For Common Channel Signaling the use of time-slot 16 is recommended. The use of CCS is
allowed with both the doubleframe and the CRC-multiframe format.
CAS-CC
For Channel Associated Signaling the use of time-slot 16 is recommended. The autonomous
CAS multiframe structure is not related to a doubleframe or a CRC-multiframe structure (refer to
CCITT G.704).
a
bits in accordance with CCITT Blue Book G.704.
to received information via bits RSW.RSIS and RSP.RSIF. Transmission is enabled via bits
XSW.XSIS and XSP.XSIF.
2. Fixed to ’1’. Used for synchronization.
3. Remote alarm indication: In undisturbed operation ’0’; in alarm condition ’1’.
4. S
received information via bits RSW.RY0 … RY4. Transmission is enabled via bits
XSW.XY0 … XY4. (*)
i
a
bits: reserved for international use. If not used, these bits should be fixed to ’1’. Access
bits: Reserved for national use. If not used, they should be fixed at ’1’. Access to
Bit
Number
1
S
Note 1
S
Note 1
i
i
2
0
1
Note 2
33
3
0
A
Note 3
4
1
S
a4
Frame Alignment Signal
n
-bit stack may be used optionally.
5
1
S
a5
6
0
S
Note 4
a6
7
1
S
a7
PEB 2035
8
1
S
a8