56F8322 datasheet(87/136 Pages) FREESCALE

87 / 136 page

56F8322 Technical Data, Rev. 16

Freescale Semiconductor

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.

56F8322 Datasheet(PDF) 87 Page - Freescale Semiconductor, Inc

56F8322 Datasheet(HTML) 87 Page - Freescale Semiconductor, Inc

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