Datasheet

Offset Name Info
0x38 CH2_TOP Counter wrap value
0x3c CH3_CSR Control and status register
0x40 CH3_DIV INT and FRAC form a fixed-point fractional number.
Counting rate is system clock frequency divided by this number.
Fractional division uses simple 1st-order sigma-delta.
0x44 CH3_CTR Direct access to the PWM counter
0x48 CH3_CC Counter compare values
0x4c CH3_TOP Counter wrap value
0x50 CH4_CSR Control and status register
0x54 CH4_DIV INT and FRAC form a fixed-point fractional number.
Counting rate is system clock frequency divided by this number.
Fractional division uses simple 1st-order sigma-delta.
0x58 CH4_CTR Direct access to the PWM counter
0x5c CH4_CC Counter compare values
0x60 CH4_TOP Counter wrap value
0x64 CH5_CSR Control and status register
0x68 CH5_DIV INT and FRAC form a fixed-point fractional number.
Counting rate is system clock frequency divided by this number.
Fractional division uses simple 1st-order sigma-delta.
0x6c CH5_CTR Direct access to the PWM counter
0x70 CH5_CC Counter compare values
0x74 CH5_TOP Counter wrap value
0x78 CH6_CSR Control and status register
0x7c CH6_DIV INT and FRAC form a fixed-point fractional number.
Counting rate is system clock frequency divided by this number.
Fractional division uses simple 1st-order sigma-delta.
0x80 CH6_CTR Direct access to the PWM counter
0x84 CH6_CC Counter compare values
0x88 CH6_TOP Counter wrap value
0x8c CH7_CSR Control and status register
0x90 CH7_DIV INT and FRAC form a fixed-point fractional number.
Counting rate is system clock frequency divided by this number.
Fractional division uses simple 1st-order sigma-delta.
0x94 CH7_CTR Direct access to the PWM counter
0x98 CH7_CC Counter compare values
0x9c CH7_TOP Counter wrap value
0xa0 EN This register aliases the CSR_EN bits for all channels.
Writing to this register allows multiple channels to be enabled
or disabled simultaneously, so they can run in perfect sync.
For each channel, there is only one physical EN register bit,
which can be accessed through here or CHx_CSR.
RP2040 Datasheet
4.6. PWM 554