nRF903 Nordic VLSI, nRF903 Datasheet - Page 26

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

PRODUCT SPECIFICATION
Nordic VLSI ASA
Revision: 3.1
4. Setting the external microprocessor frequency
The configuration word is clocked in according to Figure 7. On the falling
edge of CS, the internal decoding unit sets the frequency synthesiser to the
wanted frequency. 8.9/5.5ms must be allowed for the synthesiser to stabilise
before data may be demodulated (see Table 10).
A microprocessor that can perform all system functions at a system
clock frequency of at least 4MHz is used. f
resulting in a clock frequency of 5.5296MHz.
The resulting 14-bit configuration word is then;
(01 00 00000101 01
-
Vestre Rosten 81, N-7075 Tiller, Norway
b
) where MSB is the leftmost bit.
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Phone [phone]
P_clk
is therefore set to 01
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December 2002
b
,