RFM75C datasheet(17/28 Pages) HOPE

17 / 28 page

RFM75 V2.0

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Page 17 of 27

1: Register bank 1

RX_DR

R/W

Data Ready RX FIFO interrupt

Asserted when new data arrives RX FIFO

Write 1 to clear bit.

TX_DS

R/W

Data Sent TX FIFO interrupt

Asserted when packet transmitted on TX.

If AUTO_ACK is activated, this bit is set

high only when ACK is received.

Write 1 to clear bit.

MAX_RT

R/W

Maximum number of TX retransmits

interrupt

Write 1 to clear bit. If MAX_RT is

asserted it must be cleared to enable

further communication.

RX_P_NO

3:1

111

Data pipe number for the payload

available for reading from RX_FIFO

000-101: Data Pipe Number

110: Not used

111: RX FIFO Empty

TX_FULL

TX FIFO full flag.

1: TX FIFO full

0: Available locations in TX FIFO

OBSERVE_TX

Transmit observe register

PLOS_CNT

7:4

0000

Count lost packets. The counter is

overflow protected to 15, and discontinues

at max until reset. The counter is reset by

writing to RF_CH.

ARC_CNT

3:0

0000

Count retransmitted packets. The counter

is reset when transmission of a new packet

starts.

Reserved

7:1

000000

Carrier Detect

RX_ADDR_P0

39:0

0xE7E7E

7E7E7

R/W

Receive address data pipe 0. 5 Bytes

maximum length. (LSB byte is written

first. Write the number of bytes defined by

SETUP_AW)

RX_ADDR_P1

39:0

0xC2C2C

2C2C2

R/W

Receive address data pipe 1. 5 Bytes

maximum length. (LSB byte is written

first. Write the number of bytes defined by

SETUP_AW)

RX_ADDR_P2

7:0

0xC3

R/W

Receive address data pipe 2. Only LSB

MSB bytes is equal to

RX_ADDR_P1[39:8]

RX_ADDR_P3

7:0

0xC4

R/W

Receive address data pipe 3. Only LSB

MSB bytes is equal to

RX_ADDR_P1[39:8]

RX_ADDR_P4

7:0

0xC5

R/W

Receive address data pipe 4. Only LSB.

MSB bytes is equal to

RX_ADDR_P1[39:8]

RX_ADDR_P5

7:0

0xC6

R/W

Receive address data pipe 5. Only LSB.

MSB bytes is equal to

RX_ADDR_P1[39:8]

TX_ADDR

39:0

0xE7E7E

7E7E7

R/W

Transmit address. Used for a PTX device

only.

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