CC2550 Datasheet, PDF (31/50 Pages) Texas Instruments – Single Chip Low Cost Low Power RF-Transmitter

CC2550
GDO0_CFG[5:0]
GDO1_CFG[5:0]
Description
0 (0x00) Reserved – defined on the transceiver version.
1 (0x01) Reserved – defined on the transceiver version.
2 (0x02)
Associated to the TX FIFO: Asserts when the TX FIFO is filled above TXFIFO_THR. De-asserts when the TX FIFO is
below TXFIFO_THR.
3 (0x03)
Associated to the TX FIFO: Asserts when TX FIFO is full. De-asserts when the TX FIFO is drained below
TXFIFO_THR.
4 (0x04) Reserved – defined on the transceiver version.
5 (0x05) Asserts when the TX FIFO has underflowed. De-asserts when the FIFO is flushed.
6 (0x06)
Asserts when sync word has been sent, and de-asserts at the end of the packet. The pin will also de-assert if the TX
FIFO underflows.
7 (0x07) Reserved – defined on the transceiver version.
8 (0x08) Reserved – defined on the transceiver version.
9 (0x09) Reserved – defined on the transceiver version.
10 (0x0A) Lock detector output
11 (0x0B)
Serial Clock. Synchronous to the data in synchronous serial mode.
Data is set up on the falling edge and is read on the rising edge of SERIAL_CLK.
12 (0x0C) Reserved – defined on the transceiver version.
13 (0x0D) Reserved – defined on the transceiver version.
14 (0x0E) Reserved – defined on the transceiver version.
15 (0x0F) Reserved – defined on the transceiver version.
16 (0x10) Reserved – used for test.
17 (0x11) Reserved – used for test.
18 (0x12) Reserved – used for test.
19 (0x13) Reserved – used for test.
20 (0x14) Reserved – used for test.
21 (0x15) Reserved – used for test.
22 (0x16) Reserved – defined on the transceiver version.
23 (0x17) Reserved – defined on the transceiver version.
24 (0x18) Reserved – used for test.
25 (0x19) Reserved – used for test.
26 (0x1A) Reserved – used for test.
27 (0x1B) PA_PD. PA is enabled when 1, in power-down when 0. Can be used to control external PA or RX/TX switch.
28 (0x1C) Reserved – defined on the transceiver version.
29 (0x1D) Reserved – defined on the transceiver version.
30 (0x1E) Reserved – used for test.
31 (0x1F) Reserved – used for test.
32 (0x20) Reserved – used for test.
33 (0x21) Reserved – used for test.
34 (0x22) Reserved – used for test.
35 (0x23) Reserved – used for test.
36 (0x24) Reserved – used for test.
37 (0x25) Reserved – used for test.
38 (0x26) Reserved – used for test.
39 (0x27) Reserved – used for test.
40 (0x28) Reserved – used for test.
41 (0x29) CHIP_RDY
42 (0x2A) Reserved – used for test.
43 (0x2B) XOSC_STABLE
44 (0x2C) Reserved – used for test.
45 (0x2D) GDO0_Z_EN_N. When this output is 0, GDO0 is configured as input (for serial TX data).
46 (0x2E) High impedance (3-state)
47 (0x2F) HW to 0 (HW1 achieved with _INV signal)
48 (0x30) CLK_XOSC/1
49 (0x31) CLK_XOSC/1.5
50 (0x32) CLK_XOSC/2
51 (0x33) CLK_XOSC/3
52 (0x34) CLK_XOSC/4
53 (0x35) CLK_XOSC/6
54 (0x36) CLK_XOSC/8
55 (0x37) CLK_XOSC/12
56 (0x38) CLK_XOSC/16
57 (0x39) CLK_XOSC/24
58 (0x3A) CLK_XOSC/32
59 (0x3B) CLK_XOSC/48
60 (0x3C) CLK_XOSC/64
61 (0x3D) CLK_XOSC/96
62 (0x3E) CLK_XOSC/128
63 (0x3F) CLK_XOSC/192
Table 23: GDO signal selection
Preliminary Data Sheet (rev. 1.1) SWRS039
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