MRF24J40-I/ML Microchip Technology, MRF24J40-I/ML Datasheet - Page 133

• 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

3.18
The MRF24J40 provides a Turbo mode to transmit and
receive at 625 kbps (2.5 times 250 kbps). This mode
enables higher data rates for proprietary protocols.
To configure the MRF24J40 for Turbo mode, perform
the following steps:
1.
TABLE 3-27:
© 2010 Microchip Technology Inc.
Addr.
0x3C BBREG4
0x2A SOFTRST
0x38 BBREG0
0x3B BBREG3
Enable Turbo mode by setting the TURBO
(BBREG0 0x38<0>) bit = 1.
Name
Turbo Mode
PREVALIDTH3 PREVALIDTH2 PREVALIDTH1 PREVALIDTH0
REGISTERS ASSOCIATED WITH TURBO MODE
CSTH2
Bit 7
r
r
CSTH1
Bit 6
r
r
CSTH0
Bit 5
r
r
Preliminary
PRECNT2
Bit 4
r
r
2.
3.
4.
Set the baseband parameter, PREVALIDTH
(BBREG3 0x3B<7:4>) bits = 0011.
Set baseband parameter, CSTH (BBREG4
0x3C<7:5>) bits = 010.
Perform a baseband circuitry Reset, RSTBB
(SOFTRST 0x2A<1>) = 1.
PREDETTH2
PRECNT1
Bit 3
r
r
PREDETTH1
PRECNT0
RSTPWR
Bit 2
r
MRF24J40
PREDETTH0
RSTBB
Bit 1
r
r
DS39776C-page 133
RSTMAC
TURBO
Bit 0
r
r