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| 型號(hào)： | 1200 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 無繩電話/電話 |
| 英文描述： | TELECOM, CELLULAR, RF AND BASEBAND CIRCUIT, QCC20 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, QLP-20 |
| 文件頁數(shù)： | 49/70頁 |
| 文件大小： | 841K |
| 代理商： | 1200 |
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Chipcon
SmartRF CC1100
Chipcon AS
SmartRF
CC1100 Preliminary Data Sheet (rev. 1.0) 2005-04-25
Page 53 of 68
0x16: MCSM2 – Main Radio Control State Machine configuration
Bit
Field Name
Reset
R/W
Description
7:5
Reserved
R0
Reserved
4
RX_TIME_RSSI
0
R/W
Direct RX termination based on RSSI measurement (carrier
sense). For ASK/OOK modulation, RX times out if there is
no carrier sense in the first 8 symbol periods.
3
RX_TIME_QUAL
0
R/W
When the RX_TIME timer expires, the chip checks if sync
word is found when RX_TIME_QUAL=0, or either sync
word is found or PQI is set when RX_TIME_QUAL=1.
2:0
RX_TIME[2:0]
7 (111)
R/W
Timeout for sync word search in RX. The timeout is relative
to the programmed EVENT0 timeout, which means that the
duty cycle can be set in wake-on-radio (WOR) mode. The
RX timeout is scaled by 1 bit less than the EVENT0 timeout
with respect to the WORCTRL.WOR_RES setting, as very long
timeouts probably also will use very low RX duty cycles.
Setting
RX timeout
Duty cycle, WOR
0 (000)
TEVENT0 / 2
(3+WOR_RES)
12.5% / 2
WOR_RES
1 (001)
TEVENT0 / 2
(4+WOR_RES)
6.25% / 2
WOR_RES
2 (010)
TEVENT0 / 2
(5+WOR_RES)
3.125% / 2
WOR_RES
3 (011)
TEVENT0 / 2
(6+WOR_RES)
1.563% / 2
WOR_RES
4 (100)
TEVENT0 / 2
(7+WOR_RES)
0.781% / 2
WOR_RES
5 (101)
TEVENT0 / 2
(8+WOR_RES)
0.391% / 2
WOR_RES
6 (110)
TEVENT0 / 2
(9+WOR_RES)
0.195% / 2
WOR_RES
7 (111)
Until end of packet
N/A (no timeout)
Note that the RC oscillator must be enabled in order to use
setting 0-6, because the timeout counts RC oscillator
periods. WOR mode does not need to be enabled.
The timeout counter resolution is limited: With RX_TIME=0,
the timeout count is given by the 13MSBs of EVENT0,
decreasing to the 7MSBs of EVENT0 with RX_TIME=6.
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