ATA5811-PLQW80 Atmel, ATA5811-PLQW80 Datasheet - Page 46

• Manufacturer Part Number: ATA5811-PLQW80
• Description: RF Transceiver RF Data Control Transceiver
• Manufacturer: Atmel

Specifications of ATA5811-PLQW80

• Wireless Frequency: 226 KHz
• Interface Type: 4-Wire SPI
• Noise Figure: 7 dB
• Output Power: 10 dBm
• Operating Supply Voltage: 2.4 V to 5.25 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-48
• Maximum Data Rate: 20 Kbps
• Minimum Operating Temperature: - 40 C
• Modulation: ASK, FSK
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10. Transceiver Configuration
10.1
Figure 10-1. Read TX/RX Data Buffer
10.2
Figure 10-2. Write TX/RX Data Buffer
46
Command: Read TX/RX Data Buffer
Command: Write TX/RX Data Buffer
ATA5811/ATA5812
SDO_TMDO
SDO_TMDO
SDI_TMDI
SDI_TMDI
SCK
SCK
CS
CS
Command: Read TX/RX Data Buffer
Command: Write TX/RX Data Buffer
MSB
Nr. Bytes in the TX/RX Data Buffer
MSB
Nr. Bytes in the TX/RX Data Buffer
The configuration of the transceiver takes place via a 4-wire serial interface (CS, SCK,
SDI_TMDI, SDO_TMDO) and is organized in 8-bit units. The configuration is initiated with a 8-bit
command. While shifting the command into pin SDI_TMDI, the number of bytes in the TX/RX
data buffer are available on pin SDO_TMDO. The read and write commands are followed by one
or more 8-bit data units. Each 8-bit data transmission begins with the MSB. The serial interface
is in reset state if the level on pin CS = Low.
During a RX operation the user can read the received bytes in the TX/RX data buffer
successively.
During a TX operation the user can write the bytes in the TX/RX data buffer successively. An
echo of the command and the TX data bytes are provided for the microcontroller on pin
SDO_TMDO.
LSB
LSB
MSB
MSB
Write TX/RX Data Buffer
RX Data Byte 1
TX Data Byte 1
X
LSB
LSB
MSB
MSB
RX Data Byte 2
TX Data Byte 2
TX Data Byte 1
X
LSB
LSB
4689F–RKE–08/06