Texas Instruments CC112 Series, User Manual, Page: 84 / 109

CC112X/CC1175
SWRU295C Page 84 of 108
PKT_CFG0 - Packet Configuration, Reg 0
Bit no. Name Reset R/W Description
7 PKT_CFG0_RESERVED7 0x00 R/W For test purposes only, use values from SmartRF Studio
6:5 LENGTH_CONFIG 0x00 R/W Packet Length Configuration
00 Fixed packet length mode. Packet Length configured through the
PKT_LEN
register
01 Variable packet length mode. Packet length configured by the first byte received
after sync word
10 Infinite packet length mode
11 Variable packet length mode. Length configured by the 5 LSB of the first byte
received after sync word
4:2 PKT_BIT_LEN 0x00 R/W In fixed packet length mode this field (when not zero) indicates the number of bits to
send/receive after
PKT_LEN
number of bytes are sent/received. CRC is not supported
when
PKT_LEN_BIT != 0
1 UART_MODE_EN 0x00 R/W UART Mode Enable. When enabled, the packet engine will insert/remove a start and
stop bit to/from the transmitted/received bytes
0 UART mode disabled
1 UART mode enabled
0 UART_SWAP_EN 0x00 R/W Swap Start and Stop bits values
0 Swap disabled. Start/stop bits values are '1'/'0'
1 Swap enabled. Start/stop bits values are '0'/'1'
RFEND_CFG1 - RFEND Configuration, Reg 1
Bit no. Name Reset R/W Description
7:6 RFEND_CFG1_NOT_USED 0x00 R
5:4 RXOFF_MODE 0x00 R/W RXOFF Mode. Determines the state the radio will enter after receiving a good packet
00 IDLE
01 FSTXON
10 TX
11 RX
3:1 RX_TIME 0x07 R/W RX Timeout for sync word search in RX
XOSC
RES WOR
TIME RX
f
EVENT
FLOOR MAX
1250
2
2
0
, 1 Timeout RX
_ 4
3 _
The RX timeout is disabled when
RX_TIME = 111b
0 RX_TIME_QUAL 0x01 R/W RX Timeout Qualifier
0 Continue RX mode on RX timeout if sync word is found
1 Continue RX mode on RX timeout if sync word has been found, or if PQT is
reached or CS is asserted