Figure 42: Pwm Block Diagram - Philips LPC2194 User Manual

Philips Semiconductors
ARM-based Microcontroller
Match Register 0
Match Register 1
Match Register 2
Match Register 3
Match Register 4
Match Register 5
Match Register 6
Latch Enable Register
Match Control Register
Interrupt Register
M[6:0]
Interrupt
Stop on Match
Reset on Match
Timer Control Register
Note: this diagram is intended to clarify the function of the PWM rather than to suggest a specific design implementation.
Pulse Width Modulator (PWM)
Shadow Register 0
Load Enable
Shadow Register 1
Load Enable
Shadow Register 2
Load Enable
Shadow Register 3
Load Enable
Shadow Register 4
Load Enable
Shadow Register 5
Load Enable
Shadow Register 6
Load Enable
Match 0
Clear
Control
CSN
RESET ENABLE

Figure 42: PWM block diagram

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=
=
=
=
=
=
Timer Counter
CE
TCI
Prescale Counter
MAXVAL
Prescale Register
226
Preliminary User Manual
LPC2119/2129/2194/2292/2294
Match 0
S
Match 1
R
PWMSEL2
mux S
Match 2
R
PWMSEL3
mux S
Match 3
R
PWMSEL4
mux S
Match 4
R
PWMSEL5
mux S
Match 5
R
PWMSEL6
mux S
Match 6
R
PWMENA1..6 PWMSEL2..6
PWM Control Register
PWM1
Q
EN PWMENA1
Q PWM2
EN PWMENA2
Q PWM3
EN PWMENA3
Q PWM4
EN PWMENA4
Q PWM5
EN PWMENA5
PWM6
Q
EN PWMENA6
May 03, 2004