UPD9930 datasheet(49/80 Pages) RENESAS

49 / 80 page

µPD9930

TONCR

TNMODE

Single tone/dual tone specification

Single tone mode

TNP2

TNP1

TNP0

START

/STOP

Remarks

Dual tone mode

At reset

TNP2

Generation pattern selection

Continuous tone generation

31.25 ms tone, 31.25 ms no tone repeated

At reset

TNP1

TNP0

200 ms tone, 200 ms no tone repeated

250 ms tone, 250 ms no tone repeated

500 ms tone, 500 ms no tone repeated

1 s tone, 1s no tone repeated

GSM triple tone generatedNote 1

200 ms interval tone generated (one shot tone)

START/STOP

Tone generation/stop control

Stop ("1"

→ "0", "0" → "0" both valid)

Remarks

Validation of tone ferquency selection register setting data, start of

generation ("1"

→ "1", "0" → "1" both valid)

At reset

Remarks

Note 2

4.3.3 Tone Control Register (TONCR)

This is a 5-bit register for controlling single tone/dual tone specification, generation pattern selection, and

generation and stopping.

Figure 4-11 Tone Control Register

Notes 1. 950 Hz tone 333 ms, 1400 Hz tone 333 ms, 1800 Hz tone 333 ms, 1 s no tone repeated.

2. Do not input a command that sets a tone oscillation frequency after inputting a tone oscillation command

(writing "1" to the START/STOP control bit of the tone control register).

Remark When the regeneration pattern is specified as "110", it becomes GSM triple tone command, so tone

generation forcibly enters single tone mode.

Tone generation and change of a tone that is being generated is executed only when "1" is written for START/

STOP control bit (D0 bit) (refer to Figure 4-11 and Table 4-6).

UPD9930 Datasheet(PDF) 49 Page - Renesas Technology Corp

UPD9930 Datasheet(HTML) 49 Page - Renesas Technology Corp

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80

Datasheet Download

Link URL