ML7406 datasheet(55/104 Pages) LAPIS

Part #	ML7406

Description	868MHz SRD RF transceiver IC

PDF	104 Pages

Scroll/Zoom	100%

Manufacturer	LAPIS [LAPIS Semiconductor Co., Ltd.]

Direct Link	http://www.lapis-semi.com/

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55 / 104 page

FEDL7406-02

ML7406

55/104

(3) Channel space setting

Channel space can be set by [CH_SPACE_H: B1 0x23], [CH_SPACE_L: B1 0x24] registers. Hexadecimal values

calculated in the following formula should be set to [CH_SPACE_H: B1 0x23], [CH_SPACE_L: B1 0x24] registers.

(MSB->LSB order)

Channel space is from the center frequency of given channel to adjacent channel center frequency.

Channel space setting value can be calculated using the following formula:

⋅

⎪⎭

⎪

⎬

⎫

⎪⎩

⎪

⎨

⎧

ref

SPACE

(Integer part)

Here

_ SPACE

Channel space setting

Channel space [MHz]

ref

PLL reference frequency (=master clock frequency : FMCK1)

[Example]

When set channle space to 60kHz (master clock 26MHz), the calculation is as follows.

⋅

⎭

⎬

⎫

⎩

⎨

⎧

MHz

SPACE

(Integer part) = 2419 (0x0973)

[CH_SPACE_H: B1 0x23] = 0x09

[CH_SPACE_L: B1 0x24] = 0x73

ML7406 Datasheet(PDF) 55 Page - LAPIS Semiconductor Co., Ltd.

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