PEF2054 SIEMENS [Siemens Semiconductor Group], PEF2054 Datasheet - Page 96

• Manufacturer Part Number: PEF2054
• Description: ICs for Communications
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Table 12
PCM Mode
0
1
2
Examples
1) In PCM mode 0, with a frame consisting of 32 time slots, the following timing
Figure 26
Timing PCM Frame Offset for Example 1
Semiconductor Group
relationship between the framing signal and the data signals is required:
PFS
PDC
TxD#
RxD#
Required
Time-Slot
and Bit
Offset
Offset Upstream, POFU, PCSR
OFU9 … 2 = (BNU + 23)
OFU9 … 1 = (BNU + 47)
OFU9 … 0 = (BNU + 95)
256
0
Bit 7
1
1
Start of Internal Frame
BNU
BND
Bit 6
2
Bit 5
3
Bit 4
Time-Slot 0
4
mod BPF
mod BPF
mod BPF
Bit 3
5
96
Bit 2
6
Bit 1
7
Bit 0
8
Remarks
PCSR:OFU1 … 0 = 0
PCSR:OFU0 = 0
–
9
10
Application Hints
PCSR
PCSR
PMOD PSM = 0
PEB 2055
PEF 2055
:
:
:
URE
DRE = 0
ITT08041
=
1