
12-2
ML63326 User's Manual
Chapter 12 Melody Driver (MELODY63K)
12.3 Melody Driver Registers
(1) Tempo Register (TEMPO)
TEMPO is a 4-bit special function register (SFR) that sets the tempo of the melody driver.
(2) Melody Driver Control Register (MDCON)
MDCON is a 4-bit special function register (SFR) that controls output of the melody driver.
TMP3
TMP2
TMP1
TMP0
TEMPO (096H)
(R/W)
bit 3
bit 2
bit 1
bit 0
Melody tempo select
bit 3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
bit 2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
bit 1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
bit 0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
: = 480 (initial value)
: = 480
: = 320
: = 240
: = 192
: = 160
: = 137
: = 120
: = 107
: = 96
: = 87
: = 80
: = 74
: = 69
: = 64
: = 60
MSF
EMBD
MBM1
MBM0
MDCON (097H)
(R/W)
bit 3
bit 2
bit 1
bit 0
Melody status flag
0 : Melody stopped (initial value)
1 : Melody output
Buzzer output ON/OFF control
0 : Buzzer output OFF (initial value)
1 : Buzzer output ON
Buzzer mode select
bit 1
0
0
1
1
bit 0
0
1
0
1
: Intermittent tone 1 (initial value)
: Intermittent tone 2
: Single tone
: Continuous tone
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