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TUSB3200CPAH 数据表(PDF) 87 Page - Texas Instruments

部件名 TUSB3200CPAH
功能描述  USB Streaming Controller STC
PDF  93 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

TUSB3200CPAH 数据表(HTML) 87 Page - Texas Instruments

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A–39
A.5.6
PWM Registers
This section describes the memory-mapped registers used for the PWM output control and operation. The PWM
output has a set of three registers.
A.5.6.1 PWM Frequency Register (PWMFRQ – Address FFBFh)
The PWM frequency register contains the control bits for programming the frequency of the PWM output and for
enabling the PWM output circuitry.
Bit
7
6
5
4
3
2
1
0
Mnemonic
PWMEN
FRQ6
FRQ5
FRQ4
FRQ3
FRQ2
FRQ1
FRQ0
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
BIT
MNEMONIC
NAME
DESCRIPTION
7
PWMEN
PWM output enable
The PWM output enable bit is set to a 1 by the MCU to enable the PWM output
circuitry.
6:0
FRQ(6:0)
PWM frequency
The PWM frequency control bits are set by the MCU to program the frequency of the
PWM output signal. The frequency range defined by the 7-bit value is from 00h =
732.4 Hz to EFh = 93.75 kHz.
A.5.6.2 PWM Pulse Width Register (Low Byte) (PWMPWL – Address FFBEh)
The PWM pulse width register (low byte) contains the least significant byte of the 16-bit PWM output pulse width value.
Bit
7
6
5
4
3
2
1
0
Mnemonic
PW7
PW6
PW5
PW4
PW3
PW2
PW1
PW0
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
BIT
MNEMONIC
NAME
DESCRIPTION
7:0
PW(7:0)
PWM pulse width
The PWM pulse width control bits are set by the MCU to program the pulse width
(duty cycle) of the PWM output signal. A value of 0000h results in a 0-V dc level and a
value of FFFFh results in a 5-V dc level.
A.5.6.3 PWM Pulse Width Register (High Byte) (PWMPWH – Address FFBDh)
The PWM pulse width register (high byte) contains the most significant byte of the 16-bit PWM output pulse width
value.
Bit
7
6
5
4
3
2
1
0
Mnemonic
PW15
PW14
PW13
PW12
PW11
PW10
PW9
PW8
Type
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Default
0
0
0
0
0
0
0
0
BIT
MNEMONIC
NAME
DESCRIPTION
7:0
PW(15:8)
PWM pulse width
The PWM pulse width control bits are set by the MCU to program the pulse width
(duty cycle) of the PWM output signal. A value of 0000h results in a 0-V dc level and a
value of FFFFh results in a 5-V dc level.



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