TDA5240 Datasheet, PDF (110/284 Pages) Infineon Technologies AG – Enhanced Sensitivity Multi-Channel Quad-Configuration Receiver

TDA5240
Functional Description
WU IRQ
TSI IRQ
Wait for Wake-up interrupt
WU IRQ
Wait for TSI interrupt
TSI IRQ
Wait for EOM interrupt
TIMEOUT -> SLEEP -> SPM
or (dependent on application )
EXT_ TOTI M:
* Select external processing (for ext. TOTIM)
(Write x_CHCFG.EXTROC = 0x2)
* Generate external TOTIM
(Write EXTPCMD 0x02)
* Disable external processing
(Write x_CHCFG.EXTROC = 0x0)
EOM IRQ
Only necessary if other PPx signals needed during self -polling
otherwise configure PPx once at the beginning
Activate Symbol Sync on PPx
(example for PP 0;
for other PPx see notes below )
Write 0xF4 0x07
Deactivate Symbol Sync on PPx
(example for PP 0 = RX_RUN)
Write PPCFG0.PP0CFG = 0x1
Write PPCFG0.PP0CFG = 0xE
Wait for Symbol Sync
(on PPx)
(if no ISR impl.)
Symbol Sync = 1
Interrupt
Wait for interrupt
Wait for SW Timeout
Figure 78
SW Timeout
Parallel Wake-up Search
1. Force Symbol Sync for MCU to 0
Write 0xED 0x40
2. Select external processing (for ext. EOM)
Write x_CHCFG.EXTPROC = 0x2
3. Generate external EOM
Write EXTPCMD 0x01
4. Disable external processing
Write x_CHCFG.EXTPROC = 0x0
5. Unforce Symbol Sync
Write 0xED 0x00
Symbol Sync = 0
EOM generation
- must be faster than
RUNIN duration
Notes:
- Symbol Sync can be activated on any PPx port
PP0: Write 0xF4 0x07 & Write PPCFG0 0x0E
PP1: Write 0xF4 0x70 & Write PPCFG0 0xE0
PP2: Write 0xF5 0x01 & Write PPCFG1 0x0E
PP3: Write 0xF5 0x10 & Write PPCFG1 0xE0
- Symbol Sync monitoring necessary only in run mode between frames and WU pattern
or till software timeout generated
Data Sheet
110
V4.0, 2010-02-19