NRF9E5 NORDIC SEMICONDUCTOR, NRF9E5 Datasheet - Page 20

• Manufacturer Part Number: NRF9E5
• Description: TRX, 430-928MHZ, MCU/ADC/PWM, SMD
• Manufacturer: NORDIC SEMICONDUCTOR

Specifications of NRF9E5

• Receiving Current: 12.5mA
• Transmitting Current: 30mA
• Data Rate: 50Kbps
• Frequency Range: 430MHz To 928MHz
• Modulation Type: GFSK
• Rf Ic Case Style: QFN
• No. Of Pins: 32
• Supply Voltage Range: 1.9V To
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PRODUCT SPECIFICATION
nRF9E5 Single Chip Transceiver with Embedded Microcontroller and ADC
8 INTERNAL INTERFACE; AD CONVERTER AND
8.1
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 “latch” 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:
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.
Note : Some of the pins are overridden when SPI_CTRL=1x, see Table 14.
Main office: Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -Phone [phone] - Fax [phone]
Revision: 1.3
Table 14 nRF905 433/868/915 MHz transceiver subsystem control registers - SFR 0xA0
TRANSCEIVER
P2 - Radio General Purpose I/O Port
Table 15 P2 (RADIO) register - SFR 0xA0, default initial data value is 0x08.
Addr
(hex)
SFR
P2 register bit: Function
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)
A0
B3
R/W
R/W
R/W
#bit
8
2
value
(hex)
Init
08
0
SPI_CTRL
Page 20 of 108
Name
and 0xB3.
P2
Function
General purpose I/O 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
Corresponding nRF905
Transceiver pin name
AM
CD
DR
EOC
MISO
TRX_CE
TX_EN
CSN
MOSI
SCK
June 2006