CC1101-Q1 Datasheet, PDF (70/94 Pages) Texas Instruments – Low-Power Sub-1-GHz Fractional-N UHF Device Family for Automotive

CC11x1-Q1
SWRS076B – 11-07-22-013 - APRIL 2009 – REVISED APRIL 2010
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BIT
FIELD NAME
7:5 PQT[2:0]
4 Reserved
3 CRC_AUTOFLUSH
2 APPEND_STATUS
1:0 ADR_CHK[1:0]
BIT
FIELD NAME
7 Reserved
6 WHITE_DATA
5:4 PKT_FORMAT[1:0]
3 Reserved
2 CRC_EN
1:0 LENGTH_CONFIG[1:0]
BIT
FIELD NAME
7:0 DEVICE_ADDR[7:0]
0x07: PKTCTRL1 – Packet Automation Control
RESET
R/W
DESCRIPTION
0 (0x00)
R/W
Preamble quality estimator threshold. The preamble quality estimator
increases an internal counter by one each time a bit is received that is
different from the previous bit, and decreases the counter by 8 each time
a bit is received that is the same as the last bit.
A threshold of 4 × PQT for this counter is used to gate sync-word
detection. When PQT = 0 a sync word is always accepted.
0
R0
0
R/W
Enable automatic flush of RX FIFO when CRC in not OK. This requires
that only one packet is in the RX FIFO and that packet length is limited
to the RX FIFO size.
1
R/W
When enabled, two status bytes are appended to the payload of the
packet. The status bytes contain RSSI and LQI values, as well as CRC
OK.
0 (00)
R/W
Controls address check configuration of received packages.
Setting
Address Check Configuration
0 (00)
No address check
1 (01)
Address check, no broadcast
2 (10)
Address check and 0 (0x00) broadcast
3 (11)
Address check and 0 (0x00) and 255 (0xFF) broadcast
0x08: PKTCTRL0 – Packet Automation Control
RESET
R/W
DESCRIPTION
R0
1
R/W
Turn data whitening on/off
0: Whitening off
1: Whitening on
0 (00)
R/W
Format of RX and TX data
Setting
Packet Format
0 (00)
Normal mode, use FIFOs for RX and TX
1 (01)
Synchronous serial mode. Used for backwards
compatibility. Data in on GDO0
2 (10)
Random TX mode. Sends random data using PN9
generator. Used for test.
Works as normal mode, setting 0 (00), in RX.
3 (11)
Asynchronous serial mode. Data in on GDO0 and Data
out on either of the GDO0 pins
0
R0
1
R/W
Enable CRC
1: CRC calculation in TX and CRC check in RX enabled
0: CRC disabled for TX and RX
1 (01)
R/W
Configure the packet length
Setting
Packet Length Configuration
0 (00)
Fixed packet length mode. Length configured in
PKTLEN register
1 (01)
Variable packet length mode. Packet length configured
by the first byte after sync word
2 (10)
Infinite packet length mode
3 (11)
Reserved
RESET
0 (0x00)
0x09: ADDR – Device Address
R/W
DESCRIPTION
R/W
Address used for packet filtration. Optional broadcast addresses are 0
(0x00) and 255 (0xFF).
70
Configuration Registers
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