MRF24J40-I/ML Microchip Technology, MRF24J40-I/ML Datasheet - Page 113

• Manufacturer Part Number: MRF24J40-I/ML
• Description: IC TXRX IEEE/ZIGBEE 2.4GHZ 40QFN
• Manufacturer: Microchip Technology

Specifications of MRF24J40-I/ML

• Package / Case: 40-QFN
• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4
• Applications: ISM, ZigBee™
• Power - Output: 0dBm
• Sensitivity: -95dBm
• Voltage - Supply: 2.4 V ~ 3.6 V
• Current - Receiving: 18mA
• Current - Transmitting: 18mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Number Of Receivers: 1
• Number Of Transmitters: 1
• Wireless Frequency: 2.4 GHz
• Interface Type: 4 Wire SPI
• Noise Figure: 8 dB
• Output Power: + 0 dBm
• Operating Supply Voltage: 2.5 V, 3.3 V
• Maximum Operating Temperature: 85 C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 22 mA
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

3.12.3
In Beacon-Enabled mode, the TX Beacon FIFO is used
for the transmission of beacon frames during the
beacon slot of the superframe.
In Nonbeacon-Enabled mode, the TX Beacon FIFO is
used for the transmission of a beacon frame at the time
it is triggered (transmitted).
FIGURE 3-13:
2.
© 2010 Microchip Technology Inc.
Memory Address
If the beacon frame is to be encrypted, the
security enabled bit in the frame control field
should be set to ‘1’ in the MAC Header (MHR)
when the host microcontroller loads the TX
Beacon
(TXBCON
Section 3.17 “Security” for more information
about Security modes.
TX Beacon FIFO
Packet Structure
TX BEACON FIFO
octets
FIFO,
0x1A<1>)
TX BEACON FIFO FORMAT
Header
and
Length
0x080
(m)
1
set
bit
(m + n)
Length
Frame
0x081
1
=
the
1.
TXBSECEN
0x082 – (0x082 + m – 1)
Refer
Header
m
to
Preliminary
To transmit a packet in the TX Beacon FIFO, perform
the following steps:
1.
3.
The host processor loads the TX Beacon FIFO
with an IEEE 802.15.4 compliant beacon frame
using the format shown in Figure 3-13.
Transmit the packet by setting the TXBTRIG
(TXBCON 0x1A<0>) bit = 1. The bit will be auto-
matically cleared by hardware. If the MRF24J40
is configured for Beacon-Enabled mode, the
beacon frame will be transmitted at the beacon
slot time at the beginning of the superframe. In
Nonbeacon-Enabled mode, the beacon frame is
transmitted at the time of triggering.
(0x082 + m) – (0x082 + m + n – 1)
Payload
n
MRF24J40
DS39776C-page 113