PRELIMINARY PRODUCT SPECIFICATION
nRF24L01 Single Chip 2.4 GHz Radio Transceiver
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
MASK_RX_DR
7
6
0
0
R/W Only '0' allowed
R/W Mask interrupt caused by RX_RD
1: Interrupt not reflected on the IRQ pin
0: Reflect RX_DR as active low interrupt
on the IRQ pin
MASK_TX_DS
5
4
0
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
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
MASK_MAX_RT
EN_CRC
CRCO
3
2
1
0
R/W Enable CRC. Forced high if one of the
bits in the EN_AA is high
R/W CRC encoding scheme
'0' - 1 byte
'1' – 2 bytes
PWR_UP
PRIM_RX
1
0
0
0
R/W 1: POWER UP, 0:POWER DOWN
R/W 1: PRX, 0: PTX
01
EN_AA
Enable ‘Auto Acknowledgment’ Function
Disable this functionality to be
compatible with nRF2401, see page 25
Enhanced
ShockBurst™
Reserved
ENAA_P5
ENAA_P4
ENAA_P3
ENAA_P2
ENAA_P1
ENAA_P0
7:6
5
4
3
2
00
1
1
1
1
R/W Only '00' allowed
R/W Enable auto ack. data pipe 5
R/W Enable auto ack. data pipe 4
R/W Enable auto ack. data pipe 3
R/W Enable auto ack. data pipe 2
R/W Enable auto ack. data pipe 1
R/W Enable auto ack. data pipe 0
1
0
1
1
02
EN_RXADDR
Reserved
ERX _P5
ERX _P4
ERX _P3
ERX _P2
ERX _P1
ERX _P0
Enabled RX Addresses
R/W Only '00' allowed
R/W Enable data pipe 5.
R/W Enable data pipe 4.
R/W Enable data pipe 3.
R/W Enable data pipe 2.
R/W Enable data pipe 1.
R/W Enable data pipe 0.
7:6
5
4
3
2
00
0
0
0
0
1
0
1
1
03
SETUP_AW
Setup of Address Widths
(common for all data pipes)
R/W Only '000000' allowed
R/W RX/TX Address field width
'00' - Illegal
Reserved
AW
7:2
1:0
000000
11
'01' - 3 bytes
'10' - 4 bytes
'11' – 5 bytes
LSByte will be used if address width
below 5 bytes
04
SETUP_RETR
ARD
Setup of Automatic Retransmission
R/W Auto Re-transmit Delay
7:4
0000
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway
Revision: 1.1
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Phone +4772898900
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Fax +4772898989
November 2005
Page 21 of 38
ETC [ ETC ]
