MRF24XA_15 Datasheet, PDF (37/258 Pages) Microchip Technology – Low-Power, 2.4 GHz ISM-Band IEEE 802.15.4™ RF

MRF24XA
REGISTER 2-18: RXACKWAIT (RX ACKNOWLEDGE WAIT REGISTER)
R/W-0
R/W-1
R/W/HC-1
R/W-0
R/W-0
R/W-0
RXACKWAIT<7:0>
bit 7
ADDRESS: 0x13
R/W-0
R/W-0
bit 0
Legend: R = Readable bit W = Writable bit
-n = Value at POR
‘1’ = Bit is set
r = Reserved
HC = Hardware Clear
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
RXACKWAIT<7:0>: Auto Acknowledge Wait Field bits
This field indicates the number of Base time units that the device must Wait after receiving a packet with
AckReq = 1, before transmitting the corresponding ACK packet. This field is only used when AUTO-
ACKEN = 1. For more information on Base time units, see Section 4.1 “MAC Architecture”.
REGISTER 2-19: RETXCOUNT (RETRANSMISSION COUNT REGISTER)
ADDRESS: 0x14
R/W-0011
R-0000
RETXMCNT<3:0>
bit 7
RETXCCNT<3:0>
bit 0
Legend: R = Readable bit W = Writable bit
-n = Value at POR
‘1’ = Bit is set
r = Reserved
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-4
bit 3-0
RETXMCNT<3:0>: Retransmission Max Count Field bits^{(1, 2)}
The maximum number of retries allowed after a transmission failure.
1111 = 15 retries
•
•
•
0001 = 1 retry
0000 = Transmitter does not Wait for ACK
RETXCCNT<3:0>: Retransmission Current Count Field bits
This read-only field indicates the current retransmit attempt number. When RETXCCNT<3:0> = RETX-
MCNT<3:0> and the TX attempt fails, the transmission is aborted, generating TXACKIF interrupt.
Note 1: Use this field during transmission, and must be unmodified while TXST is set.
 2015 Microchip Technology Inc.
Preliminary
DS70005023C-page 37