AT86RF232 Atmel Corporation, AT86RF232 Datasheet - Page 58

• Manufacturer Part Number: AT86RF232
• Manufacturer: Atmel Corporation

Specifications of AT86RF232

• Max. Operating Frequency: 0 MHz
• Crypto Engine: AES
• Operating Voltage (vcc): 1.8 to 3.6
• Frequency Band: 2.4 GHz
• Max Data Rate (mb/s): 0.25
• Antenna Diversity: Yes
• External Pa Control: Yes
• Power Output (dbm): 3
• Receiver Sensitivity (dbm): -100
• Receive Current Consumption (ma): 11.8
• Transmit Current Consumption (ma): 13.8
• Link Budget (dbm): 103

7.2.4 TX_ARET_ON – Transmit with Automatic Frame Retransmission and CSMA-CA Retry
58
AT86RF232
Figure 7-14. Flow Diagram of TX_ARET.
(see Note 1)
N
TRX_STATE = BUSY_TX_ARET
N
N
TRX_STATE = TX_ARET_ON
TRAC_STATUS = INVALID
frame_rctr = frame_rctr + 1
csma_rctr = csma_rctr + 1
MAX_FRAME_RETRIES
MAX_CSMA_RETRIES
Random Back-Off
TRAC_STATUS =
Transmit Frame
ACK requested
frame_rctr = 0
Receive ACK
csma_rctr = 0
until timeout
frame_rctr >
ACK valid
NO_ACK
Start TX
Result
CCA
CCA
<7
Success
Y
Y
Y
Y
N
Y
Failure
N
N
Y
SUCCESS_DATA_PENDING
Note 1: If MAX_CSMA_RETRIES = 7 no retry is
TRAC_STATUS =
Data Pending
performed
Issue IRQ_3 (TRX_END) interrupt
MAX_CSMA_RETRIES
TRX_STATE = TX_ARET_ON
Y
csma_rctr >
N
N
TRAC_STATUS =
SUCCESS
Y
8321A–MCU Wireless–10/11
CHANNEL_ACCESS_FAILURE
TRAC_STATUS =