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Registers
TXFILTCFG (0x61FA) – TX Filter Configuration
Bit Name Reset R/W Description
No.
7:4 – 0 R0 Reserved
3:0
FC
0xF R/W Sets TX anti-aliasing filter to appropriate bandwidth. Reduces spurious emissions
close to signal. For the best value to use, see Table 23-6 in Section 23.15.1.
IVCTRL (0x6265) – Analog control register (CC2533 only)
Bit Name Reset R/W Description
No.
7:6 – 00 R0 Reserved. Always read as 0.
5:4
DAC_CURR_CTRL
01 R/W Controls bias current to DAC
00: 100% IVREF, 0% IREF bias
01: 60% IVREF, 40% IREF bias
10: 40% IVREF, 60% IREF bias
11: 0% IVREF, 100% IREF bias
3
LODIV_BIAS_CTRL
0 R/W Controls bias current to LODIV
1: PTAT bias
0: IVREF bias
2
TXMIX_DC_CTRL
0 R/W Controls dc bias in TXMIX
1:0
PA_BIAS_CTRL
11 R/W Controls bias current to PA
00: IREF bias
01: IREF and IVREF bias
10: PTAT bias
11: Increased PTAT slope bias
285
SWRU191C–April 2009–Revised January 2012 CC253x Radio
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