ML7033 datasheet(46/52 Pages) LAPIS

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FEDL7033-04

ML7033

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CR16-B0, CR17-B7 to B0 …

CH2 TG1 frequency select

When the CH2RING (CR11-B7) bit is cleared, this 9-bit field is valid and determines the

output frequency from tone generator 1 on channel 2. The frequency range is between 300

and 3400 Hz at 10 Hz intervals as shown in Table 20.

The output level is calculated using the following formula.

Binary data for CR16-B0, CR17-B7 to B0

= (Output Frequency [Hz])/10

The following is an example of how to program this register field when the intended

frequency is 1500 Hz;

Ex) (Output Frequency [Hz]) / 10 = 1500/10 = 150d = 10010110b

Bits to set in CR16-B0, CR17-B7 to B0 = (0,1,0,0,1,0,1,1,0)

Note that the operations are not guaranteed when these bits define a frequency out of a band

between 300 and 3400 Hz.

Table 20

Tone Generator Frequency Setting (CH2RING bit = “0”)

CR16

CR17

Frequency

(Hz)

decimal

hex

300

01Eh

310

01Fh

320

020h

400

028h

410

029h

1000

100

064h

1010

101

065h

2000

200

0C8h

3000

300

12Ch

3390

339

153h

3400

340

154h

When the CH2RING (CR11-B7) bit is set, the setting of the CH2TG1_8 (CR16-B0) bit and

the CH2TG1_7 to CH2TG1_6 (CR16-B7 to B6) bits are ignored, and the CH2TG1_5 to

CH2TG1_0 (CR16-B5 to B0) field defines the ringing tone frequency.

When the CH2RING (CR11-B7) bit is set, the frequency range is between 15 and 50 at 1

Hz intervals as shown in Table 21.

The output frequency is calculated using the following formula.

Binary data for CR17-B5 to B0

= (Output Frequency [Hz])

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