CC2520_12 Datasheet, PDF (117/133 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
GPIOCTRL, A 0x028, R 0x00, Other GPIO options
Bit Bit mnemonic
no.
7
SC
6
GPIO_ACTRL
5:0 GPIO_PUE
Reset
value
0
0
0x00
Mode
R/W
R/W
R/W
Description
Select extra drive strength for pads.
0 - No extra drive
1 - Extra drive
Controls analog functionality for GPIO[1:0]. When set both GPIO
pin 0 and 1 will be set to analog pads.
0 - Disable analog pads
1 - Enable analog pads
Set pull up enable individually on GPIO pads 0 through 5
Pull up is 20 kohm +/- 15%
0 - Pull up disabled
1 - Pull up enabled
DPUCON, A 0x02A, R 0x01, Timeout control for DPU
Bit
Bit mnemonic
no.
7:1
RESERVED
0
RXTIMEOUT
Reset
value
0x00
1
Mode
R0
R/W
Description
Read as zero
Defines whether the RXBUFMOV instruction will time out after 32
us or immediately when the RXFIFO is empty. When the 32 us
timeout is enabled, the RXBUFMOV instruction can be run with a
higher number of bytes than the number of bytes currently stored
in RXFIFO since one byte is received every 32us.
0 - Immediate time out
1 - 32us time out
DPUSTAT, A 0x02C, R 0x00, DPU status register
Bit
Bit mnemonic
no.
7:4
RESERVED
3
AUTHSTAT_H
2
AUTHSTAT_L
1
DPUH_ACTIVE
0
DPUL_ACTIVE
Reset
value
0000
0
0
0
0
Mode
R0
R
R
R
R
Description
Read as 0
Authentication status, high priority Updated when a high priority
UCBCMAC or UCCM instruction completes and keep result until a
new instruction completes. Reports the result of the last run
authentication operation.
0: Authentication check failed.
1: Authentication check passed or no authentication check was
performed.
Authentication status, low priority Updated when a low priority
UCBCMAC or UCCM instruction completes and keep result until a
new instruction completes. Reports the result of the last run
authentication operation.
0: Authentication check failed.
1: Authentication check passed or no authentication check was
performed.
High Priority Active
0: No high priority DPU instruction is currently active.
1: A high priority DPU instruction is currently active.
Low Priority Active
0: No low priority DPU instruction is currently active.
1: A low priority DPU instruction is currently active.
WWW.TI.COM
117