PEB2075 INFINEON [Infineon Technologies AG], PEB2075 Datasheet - Page 171

• Manufacturer Part Number: PEB2075
• Description: ICs for Communications Extended PCM Interface Controller
• Manufacturer: INFINEON [Infineon Technologies AG]

Data Upstream
– At the CFI interface the incoming data (data upstream) is written to the RAM starting
Note: n is an integer number; the time slot number can’t exceed the max. number of TS.
The point of time to write the data to the RAM is RCL period 1 and 3 for the CFI interface
– At the PCM interface the data, that is to be transmitted on
is read out of the RAM as soon as time slot:
Note: n is an integer number; the time slot number can’t exceed the max. number of TS.
The point of time to read the data from the RAM, is RCL period 0, 4, 7 for the PCM
interface
Due to internal delays, the RCL period at the beginning of time slot 2
4 n + 2 (for PCM mode1), 8 n + 4 for PCM mode 2) is no valid write cycle.
The data is read out of the RAM in two steps:
Semiconductor Group
with DU0 at the beginning of:
time slot: 2
time slot: 2
time slot: 2
TS 2 n + 4 ... TS 2
TS 4 n + 8 ... TS 4
TS 8 n + 16 ... TS 8 n + 23 (for PCM mode 2)
2 n
4 n + 1 (for PCM mode 1)
8 n + 3 (for PCM mode 2) is transmitted
PCM mode 0: in a block of 2 TS for TXD0 … 1 then for TXD2 … 3
PCM mode 1: in a block of 4 TS for TXD0 then for TXD2
PCM mode 2: in halfs of a 8 TS blocks for TXD0 (first half) then for TXD0
(for PCM mode 0)
n for CFI mode 0
n for CFI mode 1
n for CFI mode 2
(second half)
n + 5 (for PCM mode 0)
n + 11 (for PCM mode 1)
171
Application Hints
n + 1 (for PCM 0),
PEB 2055
PEF 2055