Datasheet

PRELIMINARY PRODUCT SPECIFICATION
nRF24L01 Single Chip 2.4 GHz Radio Transceiver
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.2 Page 22 of 39 March 2006
MEMORY MAP
All undefined bits in the table below are redundant. They will be read out as '0'.
Address
(Hex)
Mnemonic Bit Reset
Value
Type Description
00 CONFIG Configuration Register
Reserved 7 0 R/W Only '0' allowed
MASK_RX_DR 6 0 R/W Mask interrupt caused by RX_DR
1: Interrupt not reflected on the IRQ pin
0: Reflect RX_DR as active low interrupt
on the IRQ pin
MASK_TX_DS 5 0 R/W Mask interrupt caused by TX_DS
1: Interrupt not reflected on the IRQ pin
0: Reflect TX_DS as active low interrupt
on the IRQ pin
MASK_MAX_RT 4 0 R/W Mask interrupt caused by MAX_RT
1: Interrupt not reflected on the IRQ pin
0: Reflect MAX_RT as active low
interrupt on the IRQ pin
EN_CRC 3 1 R/W Enable CRC. Forced high if one of the
bits in the EN_AA is high
CRCO 2 0 R/W CRC encoding scheme
'0' - 1 byte
'1' – 2 bytes
PWR_UP 1 0 R/W 1: POWER UP, 0:POWER DOWN
PRIM_RX 0 0 R/W 1: PRX, 0: PTX
01 EN_AA
Enhanced
ShockBurst™
Enable ‘Auto Acknowledgment’ Function
Disable this functionality to be
compatible with nRF2401, see page 26
Reserved 7:6 00 R/W Only '00' allowed
ENAA_P5 5 1 R/W Enable auto ack. data pipe 5
ENAA_P4 4 1 R/W Enable auto ack. data pipe 4
ENAA_P3 3 1 R/W Enable auto ack. data pipe 3
ENAA_P2 2 1 R/W Enable auto ack. data pipe 2
ENAA_P1 1 1 R/W Enable auto ack. data pipe 1
ENAA_P0 0 1 R/W Enable auto ack. data pipe 0
02 EN_RXADDR Enabled RX Addresses
Reserved 7:6 00 R/W Only '00' allowed
ERX _P5 5 0 R/W Enable data pipe 5.
ERX _P4 4 0 R/W Enable data pipe 4.
ERX _P3 3 0 R/W Enable data pipe 3.
ERX _P2 2 0 R/W Enable data pipe 2.
ERX _P1 1 1 R/W Enable data pipe 1.
ERX _P0 0 1 R/W Enable data pipe 0.
03 SETUP_AW Setup of Address Widths
(common for all data pipes)
Reserved 7:2 000000 R/W Only '000000' allowed
AW 1:0 11 R/W RX/TX Address field width
'00' - Illegal
'01' - 3 bytes
'10' - 4 bytes
'11' – 5 bytes
LSByte will be used if address width
below 5 bytes
04 SETUP_RETR Setup of Automatic Retransmission
ARD 7:4 0000 R/W Auto Re-transmit Delay
‘0000’ – Wait 250+86uS