mos6581
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
mos6581 [2011/09/28 09:50] – wadmin | mos6581 [2011/10/03 20:52] – [Power Supply] wadmin | ||
---|---|---|---|
Line 1: | Line 1: | ||
+ | {{cnmos.JPG}} | ||
+ | |||
**Foreword :** | **Foreword :** | ||
- | This '' | + | This '' |
* Data extracted from ' | * Data extracted from ' | ||
* quotes from various Websites | * quotes from various Websites | ||
Line 7: | Line 9: | ||
All the sources are listed in the last section of the Datasheet. | All the sources are listed in the last section of the Datasheet. | ||
- | ===== Once upon a time... ===== | + | == Once upon a time... == |
//In 1982, a young engineer named Bob Yannes was given the task of developing a soundchip for the Commodore company within a four month time frame. // | //In 1982, a young engineer named Bob Yannes was given the task of developing a soundchip for the Commodore company within a four month time frame. // | ||
Line 18: | Line 19: | ||
//Until the SID enthusiasts took the flag...// | //Until the SID enthusiasts took the flag...// | ||
- | ===== MOS6581 Datasheet ===== | ||
- | {{cnmos.JPG}} | ||
- | ===== Introduction | + | ===== MOS6581 SOUND INTERFACE DEVICE (SID) ===== |
The 6581 Sound Interface Device (SID) is a single-chip, | The 6581 Sound Interface Device (SID) is a single-chip, | ||
Line 113: | Line 112: | ||
Together these registers form a 16-bit number which linearly controls the Frequency of Oscillator 1. The frequency is determined by the following equation: | Together these registers form a 16-bit number which linearly controls the Frequency of Oscillator 1. The frequency is determined by the following equation: | ||
- | Fout = (Fn * Fclk/ | + | < |
Where Fn is the 16-bit number in the Frequency registers and Fclk is the system clock applied to the Ø2 input (pin 6). For a standard 1.0 Mhz clock, the frequency is given by: | Where Fn is the 16-bit number in the Frequency registers and Fclk is the system clock applied to the Ø2 input (pin 6). For a standard 1.0 Mhz clock, the frequency is given by: | ||
Line 302: | Line 301: | ||
Same as OSC 3, but this register allows the microprocessor to read the output of the Voice 3 Envelope Generator. This output can be added to the Filler Frequency to produce harmonic envelopes, WAH WAH, and similar effects. “Phaser” sounds can be created by adding this output to the frequency control registers of an oscillator. The Voice 3 Envelope Generator must be gated in order to produce any output from this register. The OSC 3 register, however, always reflects the changing output of the oscillator and is not affected in any way by the Envelope Generator. | Same as OSC 3, but this register allows the microprocessor to read the output of the Voice 3 Envelope Generator. This output can be added to the Filler Frequency to produce harmonic envelopes, WAH WAH, and similar effects. “Phaser” sounds can be created by adding this output to the frequency control registers of an oscillator. The Voice 3 Envelope Generator must be gated in order to produce any output from this register. The OSC 3 register, however, always reflects the changing output of the oscillator and is not affected in any way by the Envelope Generator. | ||
+ | ===== SID Pinout and Connection ===== | ||
+ | |||
+ | Pins decription can be found herebelow. Consider jumping to next section for maximum ratings. | ||
+ | |||
+ | ==== Power Supply ==== | ||
+ | SID power consumption during normal operation is 600mW. | ||
+ | |||
+ | |||
+ | === VCC - Pin 25 === | ||
+ | This pin shall be powered by a 5V DC coupled power supply. | ||
+ | About 70mA is drawn from VCC during normal operation. Coupling capacitor of at least 1uf is recommended for proper operation. | ||
+ | |||
+ | |||
+ | === VDD - Pin 28 === | ||
+ | This pin shall be connected to either 9V or 12V DC coupled power supply, according to your SID chip version: | ||
+ | |||
+ | ^ SID Model ^ VDD Voltage | ||
+ | | 6581 | 12V | 25mA | | ||
+ | | 6582 | 9V | ::: | | ||
+ | | 8580 | ::: | ::: | | ||
+ | Coupling capacitor of at least 100nf is recommended. |
mos6581.txt · Last modified: 2018/08/26 09:36 by 127.0.0.1