SA9101 datasheet(14/40 Pages) SAMES

14 / 40 page

SA9101

sames

14/40

Transparent

Framing

Mode

(incl. CRC)

A Bit

n bits

i bits

Double frame

CRC

Non-Transparent

Internally

CR4B5

CR4B0..41

CR4B7 & CR5B2 CR5B0 & CR5B12

generated

CR5B5

via DXI

CR5B4

Internally

CR4B5

via DXI

generated

CX1B6

Internally

CR4B5

via DXI

CR4B7 & CR5B2 CR5B0 & CR5B12

generated

Notes: 1) The S

n bit stack may be used optionally

2) Automatic transmission of submultiframe error indication is selectable

General signalling

-S

n (Y) bits.

-S

i bits.

Signalling

CCS: For Common Channel Signalling the use of timeslot 16 is recommended. The

use of CCS is allowed with both the doubleframe and the CRC-Multiframe format.

CAS-CC: For Channel Associated Signalling the use of timeslot 16 is recommended.

The autonomous CAS multiframe structure is not related to a doubleframe or a CRC-

Multiframe structure (refer to CCITT G704 paragraph 3.3.3). Note: CAS multiframe

synchronization and syntheses are not performed by the SA9101.

Doubleframe format

The framing structure is defined by the contents of timeslot 0 (refer to table 1).

Bit Number

Frame containing the frame

alignment signal

Note 1

Frame alignment signal

Frame not containing the

frame alignment signal

Note 1 Note 2 Note 3

Note 4

Table 1: Allocation of bits 1 to 8 of Timeslot 0

Alternate Frames

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