CC2520_11 Datasheet, PDF (111/133 Pages) Texas Instruments – 2.4 GHZ IEEE 802.15.4/ZIGBEE RF TRANSCEIVER

CC2520 DATASHEET
2.4 GHZ IEEE 802.15.4/ZIGBEE® RF TRANSCEIVER
SWRS068 – DECEMBER 2007
RXENABLE0, A 0x00E, R 0x00, RX enabling
Bit
Bit mnemonic
no.
7:0
RXENMASK[7:0]
Reset
value
0x00
Mode
R/W
Description
LSB part of the 16 bit word RXENMASK
RXENABLE enables the receiver. A non-zero value in this
register will cause the main FSM to enable the receiver when in
idle, after transmission and after acknowledgement transmission.
The following strobes can modify RXENMASK:
SRXON: Set bit 15 in RXENMASK
STXON: Set bit 14 in RXENMASK if SET_RXENMASK_ON_TX = ‘1’
SRFOFF: Clears all bits in RXENMASK
The following instructions modifies RXENMASK:
RXMASKAND : Performs a bitwise AND between RXENMASK
and the 16 bit parameter given with the instruction
RXMASKOR : Performs a bitwise OR between RXENMASK and
the 16 bit parameter given with the instruction
RXENABLE can also be written and is bit accessible. BSET and
BCLR set and clear any of the 16 bits in RXENMASK.
SRXMASKBITSET and SRXMASKBITCLR will set and clear bit
13 in RXENMASK.
There are several sources which might try to modify RXENMASK
simultaneously. To handle the case of simultaneous access to
RXENMASK from different sources the following rules apply:
- If two sources are not in conflict (they modify different parts of
the register) both their requests to modify RXENMASK will be
processed.
-Data bus has priority over all sources (BSET, BCLR, REGWR,
MEMWR)
Strobes which modify RXENMASK are prioritized as following:
1
SRFOFF
2
SXTON
3
SRXON
4
RXMASKOR
5
RXMASKAND
6
SRXMASKBITSET
7
SRXMASKBITCLR
RXENABLE1, A 0x00F, R 0x00, RX enabling
Bit
Bit mnemonic
no.
7:0
RXENMASK[15:8]
Reset
value
0x00
Mode
R/W
Description
MSB part of the 16 bit word RXENMASK
Se description of RXENABLE0.
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