Details

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BUY YM3526 https://www.utsource.net/itm/p/12606149.html

Below is the parameter table and instructions for the YM3526, also known as the OPL2 sound chip:

YM3526 (OPL2) Parameter Table

Parameter	Description	Range	Default Value
Register Address	The address of the register to be written or read	0x00 - 0xBF	N/A
Data	The data to be written to the specified register	0x00 - 0xFF	N/A
Clock Frequency	The clock frequency input to the chip	1.78975 MHz - 8 MHz	3.579545 MHz
Power Supply Voltage	The operating voltage range	4.5 V - 5.5 V	5 V
Operating Temperature	The temperature range for operation	-20掳C to +70掳C	N/A
Output Level	The output level control	0x00 - 0x0F	0x07
Tone Generation	Number of channels for tone generation	9 channels	N/A
Noise Generation	Number of channels for noise generation	3 channels	N/A
Envelope Control	Control over the envelope generator	0x00 - 0xFF	N/A
Frequency Modulation	Control over the frequency modulation	0x00 - 0xFF	N/A

Instructions for Using the YM3526 (OPL2)

1. Initialization:

   • Set the Clock Frequency:
     • Ensure the clock frequency is within the supported range (1.78975 MHz to 8 MHz).
   • Set the Power Supply Voltage:
     • Apply a stable power supply voltage between 4.5 V and 5.5 V.
   • Reset the Chip:
     • Write to the reset register (0x01) with the value 0x00 to reset the chip.

2. Writing to Registers:

   • Select Register:
     • Write the register address to the address port (usually 0x388 for PC applications).
   • Write Data:
     • Write the data to the data port (usually 0x389 for PC applications).

3. Setting Output Level:

   • Output Level Register:
     • Write the desired output level (0x00 - 0x0F) to the output level register (0x08).

4. Configuring Channels:

   • Tone Channels:
     • Configure the 9 tone channels by writing to the appropriate registers (0x20 - 0x2E).
   • Noise Channels:
     • Configure the 3 noise channels by writing to the appropriate registers (0x30 - 0x32).

5. Envelope Control:

   • Envelope Generator Registers:
     • Write to the envelope generator registers (0x40 - 0x4F) to control the attack, decay, sustain, and release parameters.

6. Frequency Modulation:

   • FM Control Registers:
     • Write to the FM control registers (0x60 - 0x6F) to enable or disable frequency modulation for each channel.

7. Reading from Registers:

   • Select Register:
     • Write the register address to the address port.
   • Read Data:
     • Read the data from the data port.

8. Power Management:

   • Power Down:
     • To reduce power consumption, write to the power down register (0x0B) with the appropriate value to disable unused channels.

Example Code (PC Assembly)

; Initialize YM3526
mov dx, 0x388          ; Address port
mov al, 0x01           ; Reset register
out dx, al
inc dx                 ; Data port
mov al, 0x00           ; Reset value
out dx, al

; Set Output Level
mov dx, 0x388          ; Address port
mov al, 0x08           ; Output level register
out dx, al
inc dx                 ; Data port
mov al, 0x07           ; Output level value
out dx, al

; Configure Tone Channel 1
mov dx, 0x388          ; Address port
mov al, 0x20           ; Tone channel 1 register
out dx, al
inc dx                 ; Data port
mov al, 0x3F           ; Configuration value
out dx, al

; Configure Envelope Generator
mov dx, 0x388          ; Address port
mov al, 0x40           ; Envelope generator register
out dx, al
inc dx                 ; Data port
mov al, 0x1F           ; Envelope configuration value
out dx, al

This table and set of instructions should help you understand and use the YM3526 (OPL2) sound chip effectively.

(For reference only)