參數(shù)資料
型號： NRF9E5-EVKIT915
廠商： Electronic Theatre Controls, Inc.
英文描述： 433/868/915MHz RF Transceiver with Embedded 8051 Compatible Microcontroller and 4 Input, 10 Bit ADC
中文描述： 433/868/915MHz RF收發(fā)器與8051兼容的嵌入式微控制器和4輸入，10位ADC
文件頁數(shù)： 19/104頁
文件大?。?/td> 1436K
代理商： NRF9E5-EVKIT915
PRODUCT SPECIFICATION
nRF9E5 Single Chip Transceiver with Embedded Microcontroller and ADC
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone +4772898900 - Fax +4772898989
Revision: 1.1
Page 19 of 104
June 2004
8
INTERNAL INTERFACE AD CONVERTER AND
TRANSCEIVER
8.1
P2 - Radio General Purpose IO Port
The P2 port controls the transceiver. The P2 port uses the address normally used by port
P2 in standard 8051. However since the radio transceiver is on chip, the port is not bi-
directional. The power on default values in the port “l(fā)atch” also differs from traditional
8051 to match the requirements of the radio transceiver subsystem.
Operation of the transceiver is controlled by SFR registers P2 and SPI_CTRL:
Addr
SFR
(hex)
A0
R/W
#bit
Init
value
(hex)
04
Name
Function
R/W
8
P2
General purpose IO for interface to
nRF905 radio transceiver and AD
converter subsystems
00 -> SPI not used
01 -> SPI connected to port P1 (boot)
1x -> SPI connected to nRF905/AD
B3
R/W
2
0
SPI_CTRL
Table 14 nRF905 433/868/915 MHz transceiver subsystem control registers - SFR 0xA0
and 0xB3.
The bits of the P2 register correspond to similar pins of the nRF905 single chip, as
shown in Table 15 P2 (RADIO) register . In the documentation the pin names are used,
so please note that setting or reading any of these nRF905 pins, means to write or read
the P2 SFR register accordingly.
P2 register bit: Function
Corresponding nRF905
Transceiver pin name
Read :
7: nRF905 Transceiver address match
6: nRF905 Transceiver carrier detect
5: nRF905 Transceiver data ready
4: ADC end of conversion
3: 0 (not used)
2: nrF905 Transceiver and ADC SPI data out (SBMISO)
1: 0 (not used)
0: 0 (not used)
Write :
7: Not used
6: Not used
5: nRF905 Transceiver enable receiver function
4: nRF905 Transceiver transmit/receive selection
3: nrF905 Transceiver and ADC SPI Chip select (RACSN)
2: Not used
1: nrF905 Transceiver and ADC SPI data in (SBMOSI)
0: nrF905 Transceiver and ADC SPI clock (SBSCK)
AM
CD
DR
EOC
MISO
TRX_CE
TX_EN
CSN
MOSI
SCK
Table 15 P2 (RADIO) register - SFR 0xA0, default initial data value is 0x08.
Note : Some of the pins are overridden when SPI_CTRL=1x, see Table 14.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
NRF9E5IC 制造商:未知廠家 制造商全稱:未知廠家 功能描述:433/868/915MHz RF Transceiver with Embedded 8051 Compatible Microcontroller and 4 Input, 10 Bit ADC
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