参数资料
型号: MC56F8011VFAE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 0-BIT, 8 MHz, OTHER DSP, PQFP32
封装: ROHS COMPLIANT, LQFP-32
文件页数: 98/125页
文件大小: 1702K
代理商: MC56F8011VFAE
56F8013/56F8011 Data Sheet, Rev. 11
74
Freescale Semiconductor
6.3.8.1
Quad Timer Clock Rate (TCR)—Bit 15
This bit selects the clock speed for the Quad Timermodule.
0 = Quad Timer module clock rate equals system clock rate, to a maximum 32MHz (default)
1 = Quad Timer module clock rate equals three times system clock rate, to a maximum 96MHz
Note: This bit should only be changed while the TMR module’s clock is disabled. See Section 6.3.9.
Note: High-speed clocking is only available when the PLL is being used.
Note: If the PWM sync signal pulse is used as input to Timer 3 (See SIM_CTRL: TC3_INP, Section
6.3.1.7), then the clocks of the Quad Timer and PWM must be related, as shown in Table 6-2.
6.3.8.2
PWM Clock Rate (PCR)—Bit 14
This bit selects the clock speed for the PWM module.
0 = PWM module clock rate equals system clock rate, to a maximum 32MHz (default)
1 = PWM module clock rate equals three times system clock rate, to a maximum 96MHz
Note: This bit should only be changed while the PWM module’s clock is disabled. See Section 6.3.9.
Note: High-speed clocking is only available when the PLL is being used.
Note: If the PWM sync signal is used as input to Timer 3 (See SIM_CTRL: TC3_INP, Section 6.3.1.7),
then the clocks of the Quad Timer and PWM must be related, as shown in Table 6-2.
6.3.8.3
Reserved—Bits 13–12
This bit field is reserved or not implemented. It is read as 0 and cannot be modified by writing.
6.3.8.4
Configure GPIOB7 (CFG_B7)—Bit 11
This bit selects the alternate function for GPIOB7.
0 = TXD — SCI Transmit Data (default)
1 = SCL — I2C Serial Clock
6.3.8.5
Configure GPIOB6 (CFG_B6)—Bit 10
This bit selects the alternate function for GPIOB6.
Table 6-2 Allowable Quad Timer and PWM Clock Rates
when Using PWM Reload Pulse
Quad Timer
Clock Speed
1X
3X
PWM
1X
OK
3X
NO
OK
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