SAB82538 Datasheet, PDF (199/253 Pages) Infineon Technologies AG – ICs for Communications

SAB 82538
SAF 82538
RFDF…
BISYNC Mode
RFIFO Data Format
0… only data bytes (character plus optional parity up to 8 bit) are stored.
1… additionally to every data byte, an attached status byte is stored.
RFDF = 0
– character 5 – 8 bit
or
– character 5 – 7(8)* bit
+ parity
* : parity bit is lost
RFDF = 1
– character 5 – 8 bit
+ status
or
– character 5 – 7(8)* bit
+ parity
+ status
* : parity bit is in status byte
7
Data Byte
4
(P)
0
Char
7
Data Byte
4
0
(P)
Char
7
0
Status Byte PE
P
PE : parity error P : parity bit
(P): can be disabled via bit DPS
RFTH1, RFTH0… RFIFO Threshold Level
These bits define the level up to which RFIFO is filled with valid data:
RFTH1, 0
Threshold Level (bytes)
RFDF = 0
RFDF = 1
00
1 ( 1d)
2 ( 1d + 1s)
01
4 ( 4d)
4 ( 2d + 2s)
10
16 (16d)
16 ( 8d + 8s)
11
32 (32d)
32 (16d + 16s)
d: data byte
s: status byte
If the threshold level is reached, the RPF interrupt is generated if enabled.
After RPF is generated, the contents of RFIFO (RFTH bytes) can be read
Semiconductor Group
199