Figure 16. Synchronization of the Demodulator Output
TXClk
Clock bit-check
counter
Dem_out
Data_out (DATA)
tee
Figure 17. Debouncing of the Demodulator Output
Dem_out
Data_out (DATA)
tDATA_min
tDATA_min
tDATA_min
tee
tee
tee
Figure 18. Steady L State Limited DATA Output Pattern After Transmission
IC_ACTIVE
Bit check
Dem_out
Data_out (DATA)
tDATA_L_max
tDATA_min
Receiving mode
Start-up mode
Bit-check mode
After the end of a data transmission, the receiver remains active. Depending on the bit
Noise_Disable in the OPMODE register, the output signal at Pin DATA is high or ran-
dom noise pulses appear at Pin DATA (see section “Digital Noise Supression”). The
edge-to-edge time period tee of the majority of these noise pulses is equal or slightly
higher than TDATA_min
.
16
T5743
4569A–RKE–12/02
ATMEL [ ATMEL ]
