Rainbow Electronics AT86RF231 User Manual
Page 141
141
8111A–AVR–05/08
AT86RF231
Register 0x17 (XAH_CTRL_1):
The XAH_CTRL_1 register is a multi-purpose control register for various RX_AACK settings.
• Bit [7:6] - Reserved
• Bit 5 - AACK_FLTR_RES_FT
7.2.7 “Register Description - Control Registers” on page 68
• Bit 4 - AACK_UPLD_RES_FT
Section 7.2.7 “Register Description - Control Registers” on page 68
• Bit 3 - Reserved
• Bit 2 - AACK_ACK_TIME
According to IEEE 802.15.4, section 7.5.6.4.2 the transmission of an acknowledgment frame
shall commence 12 symbol periods (aTurnaroundTime) after the reception of the last symbol of
a data or MAC command frame. This is fulfilled with the reset value of the register bit [2]
(AACK_ACK_TIME).
If AACK_ACK_TIME = 1 an acknowledgment frame is sent 32 µs after the reception of the last
symbol of a data or MAC command frame. This may be applied to proprietary networks including
networks using the High Data Rate Modes to improve the overall data throughput.
• Bit 1 - AACK_PROM_MODE
Section 7.2.7 “Register Description - Control Registers” on page 68
• Bit 0 - Reserved
Bit
7
6
5
4
3
2
1
0
+0x17
Reserved
AACK_FLTR_RES_FT
AACK_UPLD_RES_FT
Reserved
AACK_ACK_TIME
AACK_PROM_MODE
Reserved
XAH_CTRL_1
Read/Write
R/W
R
R/W
R/W
R
R/W
R/W
R
Reset Value
0
0
1
0
0
0
0
0