Texas Instruments TRF7970A Manual page 70

TRF7970A
SLOS743L – AUGUST 2011 – REVISED MARCH 2017
6.15.3.3.5 Special Functions Register (0x11)
Table 6-49 describes the Special Functions register at address 0x11.
Function: Indicate IRQ status for RX operations.
Bit Name
B7 Reserved
B6 Reserved
B5 Reserved
B4 Reserved
B3 Reserved
B2 Reserved
B1 Reserved
Copy of the RX start signal
B0 irg_srx (Bit 6) of the IRQ Status
register (0x0C)
6.15.3.3.6 Adjustable FIFO IRQ Levels Register (0x14)
Table 6-50 describes the Adjustable FIFO IRQ Levels register.
Function: Adjusts level at which FIFO indicates status by IRQ
Default: 0x00 at POR = H and EN = L
Bit Name
B7 Reserved
B6 Reserved
B5 Reserved
B4 Reserved
B3 Wlh_1
FIFO high IRQ level (during
RX)
B2 Wlh_0
B1 Wll_1
FIFO low IRQ level (during
TX)
B0 Wll_0
70 Detailed Description
Table 6-49. Special Functions Register (0x11)
Function
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Signals the RX SOF was received and the RX is in progress. IRQ when RX is
completed.
Table 6-50. Adjustable FIFO IRQ Levels Register (0x14)
Function
Reserved
Reserved
Reserved
Reserved
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Description
Description
Wlh_1 Wlh_0
0 0
0 1
1 0
1 1
Wll_1 Wll_0
0 0
0 1
1 0
1 1
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IRQ Level
124
120
112
96
IRQ Level
4
8
16
32