mrf24j40 Microchip Technology Inc., mrf24j40 Datasheet - Page 16
mrf24j40
Manufacturer Part Number
mrf24j40
Description
Ieee 802.15.4? 2.4 Ghz Rf Transceiver
Manufacturer
Microchip Technology Inc.
Datasheet
1.MRF24J40.pdf
(66 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
mrf24j40-I/ML
Manufacturer:
MICROCHIP
Quantity:
12 000
Part Number:
mrf24j40-I/ML
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Company:
Part Number:
mrf24j40MA-I/RM
Manufacturer:
MICROCHIP
Quantity:
12 000
Company:
Part Number:
mrf24j40MAT-I/RM
Manufacturer:
MICROCHIP
Quantity:
12 000
Company:
Part Number:
mrf24j40MB-I/RM
Manufacturer:
NXP
Quantity:
12 000
Company:
Part Number:
mrf24j40MBT-I/RM
Manufacturer:
MICROCHIP
Quantity:
101
4.2
4.2.1
The short address space is accessed by sending a ‘0’
as the first bit of the SPI transfer. The following 6 bits
are the address of the target register. The final bit of the
first byte is a ‘0‘ to indicate that the command is a read.
On the next clock edge of SCK, the Most Significant bit
of the register will shift out, followed by the rest of the
bits.
FIGURE 4-3:
EXAMPLE 4-1:
DS39776A-page 14
MRF24J40
SDO
SCK
SDI
CS
BYTE GetShortRAMAddress(BYTE address)
{
}
Short Address Register Interface
0
READING SHORT ADDRESS
REGISTERS
A5
BYTE toReturn;
CSn = 0;
SPIPut((address<<1)&0b01111110);
toReturn = SPIGet();
CSn = 1;
return toReturn;
A4
SHORT ADDRESS READ
SHORT ADDRESS READ EXAMPLE
A3
A2
A1
Advance Information
A0
0
D7
D6
D5
D4
X
D3
© 2006 Microchip Technology Inc.
D2
D1
D0