参数资料
型号: MC56F8122VFAE
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 数字信号处理
英文描述: 0-BIT, 80 MHz, OTHER DSP, PQFP48
封装: ROHS COMPLIANT, LQFP-48
文件页数: 123/136页
文件大小: 719K
代理商: MC56F8122VFAE
Register Descriptions
56F8322 Technical Data, Rev. 16
Freescale Semiconductor
87
Preliminary
6.5.7.4
INDEX0 (INDEX)—Bit 7
0 = Peripheral output function of GPIOB[5] is defined to be INDEX0
1 = Peripheral output function of GPIOB[5] is defined to be SYS_CLK
6.5.7.5
HOME0 (HOME)—Bit 6
0 = Peripheral output function of GPIOB[4] is defined to be HOME0
1 = Peripheral output function of GPIOB[4] is defined to be the prescaler clock (FREF, see Figure 3-4)
6.5.7.6
Clockout Disable (CLKDIS)—Bit 5
0 = CLKOUT output is enabled and will output the signal indicated by CLKOSEL
1 = CLKOUT is tri-stated
6.5.7.7
CLockout Select (CLKOSEL)—Bits 4–0
Selects clock to be muxed out on the CLKO pin.
00000 = SYS_CLK (from ROCS - DEFAULT)
00001 = Reserved for factory test—56800E clock
00010 = Reserved for factory test—XRAM clock
00011 = Reserved for factory test—PFLASH odd clock
00100 = Reserved for factory test—PFLASH even clock
00101 = Reserved for factory test—BFLASH clock
00110 = Reserved for factory test—DFLASH clock
00111 = MSTR_OSC Oscillator output
01000 = Fout (from OCCS)
01001 = Reserved for factory test—IPB clock
01010 = Reserved for factory test—Feedback (from OCCS, this is path to PLL)
01011 = Reserved for factory test—Prescaler clock (from OCCS)
01100 = Reserved for factory test—Postscaler clock (from OCCS)
01101 = Reserved for factory test—SYS_CLK2 (from OCCS)
01110 = Reserved for factory test—SYS_CLK_DIV2
01111 = Reserved for factory test—SYS_CLK_D
10000 = ADCA clock
6.5.8
SIM GPIO Peripheral Select Register (SIM_GPS)
All of the peripheral pins on the 56F8322 and 56F8122 share their I/O with GPIO ports. To select
peripheral or GPIO control, program the GPIOx_PER register. When SPI 0 and SCI 1, Quad Timer C and
SCI 0, or PWMA and SPI 1 are multiplexed, there are two possible peripherals as well as the GPIO
functionality available for control of the I/O. The SIM_GPS register is used to determine which peripheral
has control. The default peripherals are SPI 0, Quad Timer C, and PWMA.
Note: PWM is NOT available in the 56F8122 device.
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