nRF2401 Nordic VLSI, nRF2401 Datasheet - Page 19

• Manufacturer Part Number: nRF2401
• Description: Single Chip 2.4GHz Radio Transceiver
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
The section B[119:16] contains the segments of the configuration register dedicated to
ShockBurst™ operational protocol. After VDD is turned on ShockBurst™
configuration is done once and remains set whilst VDD is present. During operation
only the first byte for frequency channel and RX/TX switching need to be changed.
Bit 121-120:
Bit 119 – 112:
Bit 111 – 104:
NOTE:
Shorter address and CRC leaves more room for payload data in each package.
Nordic VLSI ASA
Revision: 1.0
DATA2_W: Length of RF package payload section for receive-channel 2.
DATA1_W: Length of RF package payload section for receive-channel 1.
The total number of bits in a ShockBurst™ RF package may not exceed 256!
Maximum length of payload section is hence given by:
Where:
PLL_CTRL: Controls the setting of the PLL for test purposes. With closed
ADDR_W: length of RX address set in configuration word B[23:18]
CRC: check sum, 8 or 16 bits set in configuration word B[17]
PRE: preamble, 4 or 8 bits are automatically included
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Vestre Rosten 81, N-7075 Tiller, Norway
119
111
PLL in TX no deviation will be present.
Table 11 Number of bits in payload.
118
110
0
0
1
1
117
109
Table 10 PLL setting.
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0
1
0
1
116
108
)
Closed TX/Closed RX
Open TX/Closed RX
Closed TX/Open RX
256
115
107
Open TX/Open RX
-
114
106
Phone [phone]
113
105
_
112
104
-
Fax [phone]
March 2003