Rainbow Electronics MAX1471 - Manual (Page 24)

MAX1471
315MHz/434MHz Low-Power, 3V/5V
ASK/FSK Superheterodyne Receiver
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Figure 12. DRX Mode Sequence of the MAX1471
ADATA OR
FDATA
tOFF tOFF
DIO
tCPU
tRF
CS
tCPU
tLOW
tRF
Table 12. RF Settle Timer (tRF)
Configuration
TIME BASE
(1 LSB)
MIN t RF
REG 0x7 = 0x00
REG 0x8 = 0x01
MAX t RF
REG 0x7 = 0xFF
REG 0x8 = 0xFF
120µs 120µs 7.86s
Table 10. Off-Timer (tOFF) Configuration
PRESCALE1 PRESCALE0
t OFF TIME BASE
(1 LSB)
MIN t OFF
REG 0x4 = 0x00
REG 0x5 = 0x01
MAX t OFF
REG 0x4 = 0xFF
REG 0x5 = 0xFF
0 0 120µs 120µs 7.86s
0 1 480µs 480µs 31.46s
1 0 1920µs 1.92ms 2 min 6s
1 1 7680µs 7.68ms 8 min 23s
Table 11. CPU Recovery Timer (tCPU)
Configuration
TIME BASE
(1 LSB)
MIN t CPU
REG 0x6 = 0x01
MAX t CPU
REG 0x6 = 0xFF
120µs 120µs 30.72ms
Chip Information
TRANSISTOR COUNT: 21,344
PROCESS: CMOS