MC56F836 Freescale Semiconductor, Inc, MC56F836 Datasheet - Page 119

• Manufacturer Part Number: MC56F836
• Description: 56f8300 16-bit Digital Signal Controllers
• Manufacturer: Freescale Semiconductor, Inc

[A23:A20]. This can be changed by altering [A23:A20], as shown in
6.5.7.1
This bit field is reserved or not implemented. It is read as 0 and cannot be modified by writing.
6.5.7.2
6.5.7.3
6.5.7.4
6.5.7.5
6.5.7.6
6.5.7.7
Selects clock to be muxed out on the CLKO pin.
Freescale Semiconductor
Preliminary
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Base + $A
RESET
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
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
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
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
0 = CLKOUT output is enabled and will output the signal indicated by CLKOSEL
1 = CLKOUT is tri-stated
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
Read
Write
Reserved—Bits 15–10
Alternate GPIO_B Peripheral Function for A23 (A23)—Bit 9
Alternate GPIO_B Peripheral Function for A22 (A22)—Bit 8
Alternate GPIO_B Peripheral Function for A21 (A21)—Bit 7
Alternate GPIO_B Peripheral Function for A20 (A20)—Bit 6
Clockout Disable (CLKDIS)—Bit 5
CLockout Select (CLKOSEL)—Bits 4–0
3-4)
15
0
0
14
0
0
Figure 6-9 CLKO Select Register (SIM_CLKOSR)
13
0
0
12
0
0
56F8365 Technical Data, Rev. 7
11
0
0
10
0
0
A23
9
0
A22
8
0
A21
7
0
A20
6
0
Figure
CLK
DIS
5
1
6-9.
4
0
3
0
CLKOSEL
2
0
Register Descriptions
Figure
1
0
0
0
3-4)
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