56F8335 datasheet(106/160 Pages) FREESCALE

106 / 160 page

56F8335 Technical Data, Rev. 1

106

Freescale Semiconductor

Preliminary

Figure 6-9 CLKO Select Register (SIM_CLKOSR)

6.5.7.1

Reserved—Bits 15–10

This bit field is reserved or not implemented. It is read as 0 and cannot be modified by writing.

6.5.7.2

Alternate GPIO_B Peripheral Function for A23 (A23)—Bit 9

•

0 = Peripheral output function of GPIOB[7] is defined to be A[23]

•

1 = Peripheral output function of GPIOB[7] is defined to be the oscillator clock (MSTR_OSC, see

Figure 3-4)

6.5.7.3

Alternate GPIO_B Peripheral Function for A22 (A22)—Bit 8

•

0 = Peripheral output function of GPIOB[6] is defined to be A[22]

•

1 = Peripheral output function of GPIOB[6] is defined to be SYS_CLK2

6.5.7.4

Alternate GPIO_B Peripheral Function for A21 (A21)—Bit 7

•

0 = Peripheral output function of GPIOB[5] is defined to be A[21]

•

1 = Peripheral output function of GPIOB[5] is defined to be SYS_CLK

6.5.7.5

Alternate GPIO_B Peripheral Function for A20 (A20)—Bit 6

•

0 = Peripheral output function of GPIOB[4] is defined to be A[20]

•

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 OCCS - 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

Base + $A

Read

A23

A22

A21

A20

CLK

DIS

CLKOSEL

Write

RESET

001

000

56F8335 Datasheet(PDF) 106 Page - Freescale Semiconductor, Inc

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