
ML610Q421/ML610Q422/ML610421 User’s Manual
Chapter 23 Melody Driver
23 – 9
23.3.3 Tone Length Codes
A tone length code is set in the melody 0 tone length code register (MD0LEN).
Table 23-2 shows the correspondence between tone lengths and tone length codes.
The tone length when all the bits are set to "0" is equal to the shortest tone length (the tone length when the only M0LN0
bit is set to "1").
Table 23-2 Correspondence between Tone Lengths and Tone Length Codes
Tone length
Tone length code (MD0LEN)
M0LN5
M0LN4
M0LN3
M0LN2
M0LN1
M0LN1
M0LN5–0
1
1
1
1
1
1
3FH
1
0
1
1
1
1
2FH
0
1
1
1
1
1
1FH
0
1
0
1
1
1
17H
0
0
1
1
1
1
0FH
0
0
1
0
1
1
0BH
0
0
0
1
1
1
07H
0
0
0
1
0
1
05H
0
0
0
0
1
1
03H
0
0
0
0
1
0
02H
0
0
0
0
0
1
01H
The tone length set by a tone length code and a tempo code is expressed by the following equation.
Tone length = 1.953125
×
( TP + 1 )
×
( LN + 1 ) ms
where TP is an integer of 1 to 15, and LN is an integer of 1 to 63.
The bit correspondence between TP and tempo codes is expressed by the following equation.
TP = 2
3
M0TP3 + 2
2
M0TP2 + 2
1
M0TP1 + 2
0
M0TP0
The bit correspondence between LN and tone length codes is expressed by the following equation.
LN = 2
5
M0LN5 + 2
4
M0LN4 + 2
3
M0LN3 + 2
2
M0LN2 + 2
1
M0LN1 + 2
0
M0LN0
Содержание ML610421
Страница 1: ...ML610Q421 ML610Q422 ML610421 User s Manual Issue Date Feb 9 2015 FEUL610Q421 06...
Страница 15: ...Chapter 1 Overview...
Страница 44: ...Chapter 2 CPU and Memory Space...
Страница 49: ...Chapter 3 Reset Function...
Страница 53: ...Chapter 4 MCU Control Function...
Страница 69: ...Chapter 5 Interrupts INTs...
Страница 93: ...Chapter 6 Clock Generation Circuit...
Страница 110: ...Chapter 7 Time Base Counter...
Страница 121: ...Chapter 8 Capture...
Страница 129: ...Chapter 9 1 kHz Timer 1kHzTM...
Страница 135: ...Chapter 10 Timers...
Страница 160: ...Chapter 11 PWM...
Страница 172: ...Chapter 12 Watchdog Timer...
Страница 180: ...Chapter 13 Synchronous Serial Port...
Страница 195: ...Chapter 14 UART...
Страница 216: ...Chapter 15 I2 C Bus Interface...
Страница 231: ...Chapter 16 NMI Pin...
Страница 237: ...Chapter 17 Port 0...
Страница 246: ...Chapter 18 Port 1...
Страница 252: ...Chapter 19 Port 2...
Страница 259: ...Chapter 20 Port 3...
Страница 270: ...Chapter 21 Port 4...
Страница 282: ...Chapter 22 Port A...
Страница 290: ...Chapter 23 Melody Driver...
Страница 304: ...Chapter 24 RC Oscillation Type A D Converter...
Страница 327: ...Chapter 25 Successive Approximation Type A D Converter...
Страница 338: ...Chapter 26 LCD Drivers...
Страница 371: ...Chapter 27 Battery Level Detector...
Страница 378: ...Chapter 28 Power Supply Circuit...
Страница 381: ...Chapter 29 On Chip Debug Function...
Страница 384: ...Appendixes...
Страница 435: ...Revision History...