NRF905 NORDIC SEMICONDUCTOR, NRF905 Datasheet - Page 20

• Manufacturer Part Number: NRF905
• Description: IC, TRANSCEIVER, 430 928MHZ, SMD
• Manufacturer: NORDIC SEMICONDUCTOR

Specifications of NRF905

• Transmitting Current: 9mA
• Data Rate: 50Kbps
• Frequency Range: 430MHz To 928MHz
• Modulation Type: GFSK
• Sensitivity Dbm: -100dBm
• Rf Ic Case Style: QFN
• No. Of Pins: 32
• Supply Voltage Range: 1.9V To 3.6V
• Output Power: 10dBm
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PRODUCT SPECIFICATION
nRF905 Single Chip 433/868/915 MHz Radio Transceiver
6.5
The length of all registers is fixed. However, the bytes in TX_PAYLOAD,
RX_PAYLOAD, TX_ADDRESS and RX_ADDRESS used in ShockBurst
are set in the configuration register. Register content is not lost when the device enters
one of the power saving modes.
Main office: Nordic Semiconductor ASA
Revision: 1.4
Byte #
Byte #
Byte #
Byte #
Byte #
30
31
30
31
0
1
2
3
4
5
6
7
8
9
0
1
0
1
2
3
0
1
0
-
-
Register Contents
CRC_MODE,CRC_EN, XOF[2:0], UP_CLK_EN, UP_CLK_FREQ[1:0]
bit[7:6] not used, AUTO_RETRAN, RX_RED_PWR, PA_PWR[1:0],
bit[7] not used, TX_AFW[2:0] , bit[3] not used, RX_AFW[2:0]
RX_ADDRESS (device identity) byte 0
RX_ADDRESS (device identity) byte 1
RX_ADDRESS (device identity) byte 2
RX_ADDRESS (device identity) byte 3
AM, bit [6] not used, DR, bit [0:4] not used
Content bit[7:0], MSB = bit[7]
bit[7:6] not used, RX_PW[5:0]
bit[7:6] not used, TX_PW[5:0]
Content bit[7:0], MSB = bit[7]
Content bit[7:0], MSB = bit[7]
Content bit[7:0], MSB = bit[7]
Content bit[7:0], MSB = bit[7]
RF-CONFIG_REGISTER (R/W)
Table 10 RF register contents.
HFREQ_PLL, CH_NO[8]
- Vestre Rosten 81, N-7075 Tiller, Norway
TX_PAYLOAD[247:240]
TX_PAYLOAD[255:248]
RX_PAYLOAD[247:240]
RX_PAYLOAD[255:248]
STATUS_REGISTER (R)
TX_ADDRESS[23:16]
TX_ADDRESS[31:24]
RX_PAYLOAD[15:8]
TX_PAYLOAD[15:8]
TX_ADDRESS[15:8]
TX_PAYLOAD[7:0]
RX_PAYLOAD[7:0]
TX_ADDRESS[7:0]
TX_PAYLOAD (R/W)
TX_ADDRESS (R/W)
RX_PAYLOAD (R)
CH_NO[7:0]
Page 20 of 42
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Init value
0110_1100
0000_0000
0100_0100
0010_0000
0010_0000
1110_0111
Init value
Init value
Init value
Init value
RX/TX
June 2006
E7
E7
E7
E7
E7
E7
E7
E7
X
X
X
X
X
X
X
X
X
X
X
X
X