nRF903 Nordic VLSI, nRF903 Datasheet - Page 8

• Manufacturer Part Number: nRF903
• Description: Multichannel RF Transceiver 433/868/915MHz
• Manufacturer: Nordic VLSI

PRODUCT SPECIFICATION
Mode-control is set by the pins STBY, PWR_DWN, TXEN and CS. Table 5 shows
the operating mode according to signal settings. For complete overview see Table 9,
p. 12.
A total of 4 parameters are set by the user in an internal 14-bit configuration register.
Table 6 shows the contents of the register. Bit 13 is the most significant bit (MSB).
Channel placement for the three available frequency bands is shown in Table 7.
Allowed transmission duty-cycle is shown in brackets. Channels not compliant with
FCC/ETSI regulations (as of datasheet revision date) are shown shaded.
Nordic VLSI ASA
Revision: 3.1
Only XOSC- and Pin 16 (CLK_OUT) active.
CLK_OUT frequency is 11.0592MHz before
configuration
12-13
Total configuration data package size
10-11
0-1
2-9
Table 5. nRF903 operational mode as a function of external signals STBY,
P
-
Receive mode
Transmit mode
No circuitry active
Vestre Rosten 81, N-7075 Tiller, Norway
Table 6. nRF903 Configuration word
PWR_DWN, TXEN and CS
f
P
CH
FB
P_clk
OUT
“00”
“01”
“10”
“11”
f
f
f
Output power setting
“00”
“01”
“10”
“11”
“00”
“01”
“10”
“11”
centre_433MHz
centre_868MHz
centre_915MHz
QhtrÃ'ÂsÃ"!
Frequency band = 433.92 0.87 MHz
Frequency band = 869 1 MHz
Frequency band = 915 13 MHz
Not in use
P
P
P
P
out
out
out
out
P system clock = f
P system clock = f
P system clock = f
P system clock = f
0
0
0
1
= 433.1902 10
= 868.1856 10
= 902.1696 10
= -8dBm
= -2dBm
= 4dBm
= 10dBm
-
Phone [phone]
6
6
6
+ CH 153.6 10
+ CH 153.6 10
+ CH 153.6 10
X-tal
X-tal
X-tal
X-tal
0
0
1
0
/2 MHz
/4 MHz
/8 MHz
MHz
-
3
3
3
[Hz]
[Hz]
[Hz]
X
X
0
1
Fax [phone]
December 2002
X
X
0
0
14
2
8
2
2