The soundchip doesn't have an internal clock, so yes it needs to be contiguously supplying a clock signal to the sound chip. I've heard that it's possible with pwm.
Edit: It's 1MHZ indeed. Edited the post.
The soundchip doesn't have an internal clock, so yes it needs to be contiguously supplying a clock signal to the sound chip. I've heard that it's possible with pwm.
Edit: It's 1MHZ indeed. Edited the post.