nRF24LE1 Nordic VLSI, nRF24LE1 Datasheet - Page 36

• Manufacturer Part Number: nRF24LE1
• Manufacturer: Nordic VLSI

nRF24LE1 Preliminary Product Specification
controls the events. Each autonomous mode/sequence ends with a RFIRQ interrupt. All the interrupts are
indicated as IRQ events in the timing diagrams.
The following equations calculate various timing measurements:
Revision 1.1
Symbol
T
T
T
T
ACK
ESB
OA
UL
Time Enhanced Shock-
Time on-air Ack
Description
Burst™ cycle
Time Upload
Time on-air
PTX MODE
PTX IRQ
PTX rfce
PTX SPI
1 IRQ if No Ack is on.
T
IRQ
Figure 17. Transmitting one packet with NO_ACK on
= 8.2 s @ 1Mbps, T
Standby 1
T
UL
T
UL
T
T
T
ACK
U L
OA
ESB =
=
=
=
IRQ
packet
air
Table 7. Timing equations
payload
packet
air
SPI
= 6.0 s @ 2Mbps
T
data
data
UL
PLL Lock
length
data
length
rate
36 of 191
rate
+ 2 . T
>10us
130us
length
rate
=
=
8
8
⎡
⎢ ⎣
⎡
⎢ ⎣
bit
stby2a
bit
=
byte
byte
8
SPI
⎡
⎢ ⎣
bit
⎤
⎥ ⎦
⎤
⎥ ⎦
⋅
+ T
⋅
data
⎛
⎜
⎝
byte
⎛
⎜
⎝
1
1
preamble
[
preamble
[
byte
byte
OA
T
TX
⎤
⎥ ⎦
OA
rate
⋅
]
Equation
]
+
+
N
+ T
3
3
payload
[
4 ,
4 ,
[ ]
bytes
bit
or
or
ACK
address
address
s
5
5
air
[
air
[
]
bytes
bytes
+ T
data
data
Standby-I
]
]
+
+
TX DS
IRQ
IRQ:
rate
rate
N
N
T
[
payload
[
payload
IRQ
bytes
bytes
1
[ ]
[ ]
bit
bit
s
s
]
]
+
+
1
1
or
or
2
2
CRC
CRC
[
[
bytes
bytes
]
]
⎞
⎟
⎠
⎞
⎟
⎠
+
+
packet
packet
9
9
control
control
[ ]
[ ]
bit
bit
field
field