HT36A1 Holtek Semiconductor Inc., HT36A1 Datasheet - Page 15

• Manufacturer Part Number: HT36A1
• Description: Ht36a1 -- Music Synthesizer 8-bit Mcu
• Manufacturer: Holtek Semiconductor Inc.

8 Channel Wavetable Synthesizer
Memory Map Register Table (1DH~FFH)
Note:
Rev. 1.10
1DH
1EH
1FH
20H
21H
22H
23H
24H
25H
26H
27H
28H
29H
2AH
2BH~2FH
30H~FFH Data memory (RAM)
Name
Unused No function, read only, read as 0 .
No function, read only, read as 0 .
DAC high byte (no default value)
DAC low byte (no default value)
DAON=1: DAC ON
DAON=0: DAC OFF (default)
SELW=1: DAC data from wavetable
SELW=0: DAC data from MCU
Channel number selection
High byte frequency number
Low byte frequency number
High byte start address
Low byte start address
Wave bit select,
High byte repeat number
Low byte repeat number
Envelope control,
Volume control
Volume control
Volume control
Function
Input/Output Ports
DA15
WBS
DA7
FR7
RE7
A_R
VR7
BL3
ST7
VL7
VM
D7
General purpose data memory (same as 8-Bit MCU)
15
DA14
RE14
DA6
FR6
ST6
RE6
VR6
BL2
Unused
VL6
Unused
D6
FR
DA13
RE13
DA5
RE5
VR5
BL1
FR5
ST5
VL9
VL5
D5
DA12
RE12
DA4
FR4
RE4
VR4
BL0
ST4
VL8
VL4
D4
ENV1 ENV0
DA11
FR11
ST11
RE11
DA3
RE3
VR3
FR3
ST3
VL3
D3
SELW
DA10
RE10
FR10
ST10
DA2
CH2
RE2
VR2
FR2
ST2
VL2
D2
Left
DAON
March 12, 2007
CH1
DA9
DA1
FR9
FR1
RE9
RE1
VR9
VR1
ST9
ST1
VL1
D1
HT36A1
SELW
DA8
DA0
CH0
RE8
RE0
VR8
VR0
FR8
FR0
ST8
ST0
LV0
Right
D0