28953-SWG-001-A Datasheet, PDF (65/183 Pages) M/A-COM Technology Solutions, Inc. – Application and Channel Unit Software

RS8953B
Application and Channel Unit Software Developer’s Guide
6.0 Channel Unit Code
6.1 Configurations
6.1.1 CU_2T1
The CU_2T1 compiler flag enables standard 2-loop T1 mapping at 784 kbps with each loop
carrying one-half of the payloads from T1. Each payload block contains 1 F-bit followed by 12
payload bytes (Figure 6-2). The relation between the payload bytes and PCM time slot is listed in
Table 6-2.
Figure 6-2. Payload Block Structure for 2T1 Application
CH1
F BYTE1
1 Bit 8 Bits
BYTE2 BYTE3
...
BYTE12
CH2
F BYTE13 BYTE14 BYTE15
...
BYTE24
Table 6-2. 2T1 Framing
Channel 1
Byte
1
2
3
4
5
6
7
8
9
10 11 12
Time slot
1
2
3
4
5
6
7
8
9
10
11
12
Channel 2
Byte
13
14
15
16
17
18
19
20
21
22
23
24
Time slot
13
14
15
16
17
18
19
20
21
22
23
24
100418C
Conexant
6-3