ATA8201 ATMEL Corporation, ATA8201 Datasheet - Page 26

• Manufacturer Part Number: ATA8201
• Manufacturer: ATMEL Corporation

7. ASK_NFSK
Figure 7-1.
26
ATA8201/ATA8202
ASK_NFSK
DATA_OUT
ENABLE
ASK Preamble 2.4 Kbits/s followed by FSK Data 9.6 Kbits/s
BR1
BR0
RX
The ASK_NFSK pin allows the microcontroller to rapidly switch the RF front end between
demodulation modes. A logic 1 on this pin selects ASK mode, and a logic 0 FSK mode. The time
to change modes (T
rate range) and is given in
that require an ASK preamble followed by FSK data (for typical TPM applications). During
T
Startup_Sig_Proc
Data valid BR0
, the level on pin DATA_OUT is low.
Startup_Sig_Proc
Table 5-4 on page
T
Startup_Sig_Proc
) depends on the bit rate range being selected (not current bit
23. This response time is specified for applications
Data valid BR3
4971B–INDCO–10/07