at86rf535b ATMEL Corporation, at86rf535b Datasheet - Page 7

• Manufacturer Part Number: at86rf535b
• Description: 3.5ghz Wimax Transceiver
• Manufacturer: ATMEL Corporation

5190B–WiMAX–9/07
The phase interpolation divider (PDIV) is an alternate divider architecture to a conventional mod-
ulus divider. It has the speed and power advantages of an asynchron divider and is
programmable in a restricted range.
Integrated Calibration Support
Calibration of the transceiver imbalances to optimize transmit LO leakage, transmit and receive
image rejection ratio (IMRR) will be performed in between RX/TX operation. It is totally indepen-
dent from BB/MAC processor.
SPI Interface
Serial peripheral interface (SPI) controls the transceiver. This 4-wire bus contains the ports SDE,
SCL, SDI and SDO. The SPI has an 8-bit organization. Each transmission starts with a com-
mand byte with the following structure:
MSB
The command bit CMD is set to “1” for WRITE operation and “0” for READ operation.
The transmission is continued with the data bytes. The number of data bytes depends on the
register. The MSB of each data byte is send first.
For an 8 bit register:
For a 16 bit register:
MSB
MSB
CMD
DATA7
DATA15
DATA7
DATA6
ADR6
DATA14
DATA6
DATA5
ADR5
DATA13
DATA5
DATA4
ADR4
DATA12
DATA4
DATA3
ADR3
DATA11
DATA3
DATA2
ADR2
DATA10
DATA2
DATA1
ADR1
DATA9
DATA1
DATA0
ADR0
LSB
LSB
DATA8
DATA0
LSB
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