RF31 Hope Microelectronics co., Ltd, RF31 Datasheet - Page 31

• Manufacturer Part Number: RF31
• Description: Rf31 Ism Receiver
• Manufacturer: Hope Microelectronics co., Ltd

6. Data Handling and Packet Handler
6.1. RX FIFO
A 64 byte FIFO is integrated into the chip for RX, as shown in Figure 11. "Register 7Fh. FIFO Access" is used to
access the FIFO. A burst read, as described in "3.1. Serial Peripheral Interface (SPI)", from address 7Fh will read
data from the RX FIFO.
The RX FIFO has one programmable threshold called the FIFO Almost Full Threshold, rxafthr[5:0]. When the incoming RX
data reaches the Almost Full Threshold an interrupt will be generated to the microcontroller via the nIRQ pin. The
microcontroller will then need to read the data from the RX FIFO.
The RX FIFO may be cleared or reset with the ffclrrx bit in ―Register 08h. Operating Mode and Function Control
interrupts may be enabled by setting the Interrupt Enabled bits in "Register 05h. Interrupt Enable 1" and ―Register 06h.
Interrupt Enable
will still be read correctly in the Interrupt Status registers.
Add
Add
7E
08
R/W
R/W
R/W
R/W
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Function/D
escription
Function/Descri
2,‖.
Operating &Function
RX FIFO
Control
If the interrupts are not enabled the function will not generate an interrupt on the nIRQ pin but the bits
Control 2
ption
Reserved
D7
Fax: [phone]
antdi
v[2]
D7
Reserved
Figure 11. FIFO Threshold
antdiv[1]
D6
D6
rxafthr[5]
antdiv[0]
D5
D5
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rxafthr[4]
rxmpk
D4
D4
Reserve
d
rxafthr
D3
D3
[3]
enldm
rxafthr
D2
D2
[2]
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ffclrrx
rxafthr
D1
D1
R F 3 1
[1]
Reserved
rxafthr
D0
D0
[0]
2,‖.
POR
Def.
POR
37h
Def.
All
00h
31