参数资料
型号: SM1212E433
厂商: Semtech
文件页数: 61/77页
文件大小: 0K
描述: RF EVAL FOR SX1212 433MHZ ISM
标准包装: 1
类型: 收发器,ISM
频率: 433MHz
适用于相关产品: SX1212E
已供物品: 模块,天线,电源,软件
SX1212
ADVANCED COMMUNICATIONS & SENSING
IRQ_1 source in Tx mode:
If Data_mode(1:0) = 00 (Continuous mode):
Tx_irq_1
2
13
r/w
x
DCLK
If Data_mode(1:0) = 01 (Buffered mode) or 1x (Packet mode):
0
1
Fifofull (d)
Tx_done
Fifofull
/Fifoempty
1
0
13
13
r
r
Fifofull IRQ source
Goes high when FIFO is full.
/Fifoempty IRQ source
Goes low when FIFO is empty
FIFO filling method (Buffered mode only):
Fifo_fill_method
7
14
r/w
0
Automatically starts when a sync word is detected (d)
1
Manually controlled by Fifo_fill
FIFO filling status/control (Buffered mode only):
If Fifo_fill_method = ‘0’: (d)
Fifo_fill
6
14
r/w/
c
Goes high when FIFO is being filled (sync word has been detected)
Writing ‘1’ clears the bit and waits for a new sync word (if Fifo_overrun_clr=0)
If Fifo_fill_method = ‘1’:
0
1
Stop filling the FIFO
Start filling the FIFO
Tx_done
Fifo_overrun_clr
5
4
14
13
r
r/w/
c
Tx_done IRQ source
Goes high when the last bit has left the shift register.
Goes high when an overrun error occurred.
Writing a 1 anytime clears flag (if set) and launches a new Rx or Tx process
(d): “0”, should be set to “1”.
Res
3
14
r/w
Note: “0” disables the RSSI IRQ source. It can be left enabled at any time, and
the user can choose to map this interrupt to IRQ0/IRQ1 or not.
RSSI_irq
2
14
r/w/
c
RSSI IRQ source:
Goes high when a signal above RSSI_irq_thresh is detected
Writing ‘1’ clears the bit
PLL status:
PLL_locked
1
14
r/w/
c
0
1
not locked
locked
Writing a ‘1’ clears the bit
PLL_lock detect flag mapped to pin 23:
PLL_lock_en
0
14
r/w
0
Lock detect disabled, pin 23 is HI
1
Lock detect enabled(d)
RSSI_irq_thresh
Rev 2 – June 18th, 2009
7-0
15
RSSI threshold for interrupt (coded as RSSI)
(d): “00000000”
Page 61 of 77
www.semtech.com
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