Table 14. pwm minimum pulse width settings, 31 pwmout delay register (address 33h), 1 differential signal delay (diff_dly[2:0]) – Cirrus Logic CS44800 User Manual
Page 70: Table 15. differential signal delay settings, 2 channel delay settings (chnl_dly[4:0])
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DS632F1
CS44800
state by setting the PDN bit in the register
“Clock Configuration and Power Control (address 02h)” on
page 51
to a 1b. Attempts to write this register while the PDN is not set will be ignored.
7.30.2
Minimum PWM Output Pulse Settings (MIN_PULSE[4:0])
Default = 00000
Function:
The PWM Minimum Pulse registers allow settings for the minimum allowable pulse width on each of the
PWMOUT differential signal pairs, PWMOUTxx+ and PWMOUTxx-. The value selected in this register is
applicable to all PWM channels. The effective minimum pulse is calculated by multiplying the register val-
ue by the period of the PWM_MCLK. This parameter can only be changed when all modulators and as-
sociated logic are in the power-down state by setting the PDN bit in the register
“Clock Configuration and
Power Control (address 02h)” on page 51
to a 1b. Attempts to write this register while the PDN is not set
will be ignored.
7.31
PWMOUT Delay Register (address 33h)
7.31.1
Differential Signal Delay (DIFF_DLY[2:0])
Default = 000
Function:
The Differential Signal Delay bits allow delay adjustment between each channel’s differential signals,
PWMOUTxx+ and PWMOUTxx-. This set of bits control the delay between PWMOUTxx+ and PW-
MOUTxx- across all active channels. The value of this register determines the amount of delay inserted
in the output path. The effective delay is calculated by multiplying the register value by the period of the
PWM_MCLK. This parameter can only be changed when all modulators and associated logic are in the
power-down state by setting the PDN bit in the register
“Clock Configuration and Power Control (address
02h)” on page 51
to a 1b. Attempts to write this register while the PDN is not set will be ignored.
7.31.2
Channel Delay Settings (CHNL_DLY[4:0])
Default = 00000
Function:
Binary Code
MIN_PULSE[4:0]
Minimum Pulse
Setting (multiply by
PWM_MCLK period)
00000
0 - no minimum
00110
6
10100
20
11111
31
Table 14. PWM Minimum Pulse Width Settings
7
6
5
4
3
2
1
0
DIFF_DLY2
DIFF_DLY1
DIFF_DLY0
CHNL_DLY4
CHNL_DLY3
CHNL_DLY2
CHNL_DLY1
CHNL_DLY0
Binary Code
Delay Setting (multiply by
PWM_MCLK period)
000
0 - no delay
001
1
100
4
111
7
Table 15. Differential Signal Delay Settings