Power Management Controler Peripheral

PMC (AT91S_PMC) 0xFFFFFC00 (AT91C_BASE_PMC)

Periph ID AIC	Symbol	Description
1	(AT91C_ID_SYS)	System Peripheral

Signal	Symbol	PIO controller	Description
PCK1	(AT91C_PA24_PCK1 )	PIOA Periph: B Bit: 24	PMC Programmable Clock Output 1
PCK0	(AT91C_PB27_PCK0 )	PIOB Periph: A Bit: 27	PMC Programmable Clock Output 0

Function	Description
AT91F_PMC_CfgPMC	Enable Peripheral clock in PMC for PMC
AT91F_PMC_CfgPIO	Configure PIO controllers to drive PMC signals

PMC Software API (AT91S_PMC)

Offset	Field	Description
0x0	PMC_SCER	System Clock Enable Register
0x4	PMC_SCDR	System Clock Disable Register
0x8	PMC_SCSR	System Clock Status Register
0x10	PMC_PCER	Peripheral Clock Enable Register
0x14	PMC_PCDR	Peripheral Clock Disable Register
0x18	PMC_PCSR	Peripheral Clock Status Register
0x30	PMC_MCKR	Master Clock Register
0x40	PMC_PCKR[8] (PMC_PCKR)	Programmable Clock Register
0x60	PMC_IER	Interrupt Enable Register
0x64	PMC_IDR	Interrupt Disable Register
0x68	PMC_SR	Status Register
0x6C	PMC_IMR	Interrupt Mask Register

Function	Description
AT91F_CKGR_GetMainClock	Return Main clock in Hz
AT91F_PMC_GetProcessorClock	Return processor clock in Hz (for AT91RM3400 and AT91RM9200)
AT91F_PMC_DisablePeriphClock	Enable peripheral clock
AT91F_PMC_EnablePCK	Enable peripheral clock
AT91F_PMC_DisablePCK	Enable peripheral clock
AT91F_PMC_EnablePeriphClock	Enable peripheral clock
AT91F_PMC_GetMasterClock	Return master clock in Hz (just for AT91RM9200)

PMC Register Description

PMC: AT91_REG PMC_SCER System Clock Enable Register

PMC AT91C_PMC_SCER 0xFFFFFC00

Offset	Name	Description
0	PMC_PCK AT91C_PMC_PCK	Processor Clock 0 = The processor clock is disabled 1 = The processor clock is enabled
1	PMC_UDP AT91C_PMC_UDP	USB Device Port Clock 0 = The 48 MHz clock of the USB Device Port is disabled 1 = The 48 MHz clock of the USB Device Port is enabled
2	PMC_MCKUDP AT91C_PMC_MCKUDP	USB Device Port Master Clock Automatic Disable on Suspend 0 = The automatic disable of the master clock of the USB Device Port when suspend condition occurs is disabled. 1 = The automatic disable of the master clock of the USB Device Port when suspend condition occurs is enabled.
4	PMC_UHP AT91C_PMC_UHP	USB Host Port Clock 0 = The 48 MHz clock of the USB Device Port is disabled. 1 = The 48 MHz clock of the USB Device Port is enabled.
8	PMC_PCK0 AT91C_PMC_PCK0	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
9	PMC_PCK1 AT91C_PMC_PCK1	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
10	PMC_PCK2 AT91C_PMC_PCK2	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
11	PMC_PCK3 AT91C_PMC_PCK3	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
12	PMC_PCK4 AT91C_PMC_PCK4	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
13	PMC_PCK5 AT91C_PMC_PCK5	Programmable Clock Output 0 = No effect. 1 = Enables the corresponding programmable clock output.
14	PMC_PCK6 AT91C_PMC_PCK6	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
15	PMC_PCK7 AT91C_PMC_PCK7	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.

PMC: AT91_REG PMC_SCDR System Clock Disable Register

PMC AT91C_PMC_SCDR 0xFFFFFC04

Offset	Name	Description
0	PMC_PCK AT91C_PMC_PCK	Processor Clock 0 = The processor clock is disabled 1 = The processor clock is enabled
1	PMC_UDP AT91C_PMC_UDP	USB Device Port Clock 0 = The 48 MHz clock of the USB Device Port is disabled 1 = The 48 MHz clock of the USB Device Port is enabled
2	PMC_MCKUDP AT91C_PMC_MCKUDP	USB Device Port Master Clock Automatic Disable on Suspend 0 = The automatic disable of the master clock of the USB Device Port when suspend condition occurs is disabled. 1 = The automatic disable of the master clock of the USB Device Port when suspend condition occurs is enabled.
4	PMC_UHP AT91C_PMC_UHP	USB Host Port Clock 0 = The 48 MHz clock of the USB Device Port is disabled. 1 = The 48 MHz clock of the USB Device Port is enabled.
8	PMC_PCK0 AT91C_PMC_PCK0	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
9	PMC_PCK1 AT91C_PMC_PCK1	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
10	PMC_PCK2 AT91C_PMC_PCK2	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
11	PMC_PCK3 AT91C_PMC_PCK3	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
12	PMC_PCK4 AT91C_PMC_PCK4	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
13	PMC_PCK5 AT91C_PMC_PCK5	Programmable Clock Output 0 = No effect. 1 = Enables the corresponding programmable clock output.
14	PMC_PCK6 AT91C_PMC_PCK6	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
15	PMC_PCK7 AT91C_PMC_PCK7	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.

PMC: AT91_REG PMC_SCSR System Clock Status Register

PMC AT91C_PMC_SCSR 0xFFFFFC08

Offset	Name	Description
0	PMC_PCK AT91C_PMC_PCK	Processor Clock 0 = The processor clock is disabled 1 = The processor clock is enabled
1	PMC_UDP AT91C_PMC_UDP	USB Device Port Clock 0 = The 48 MHz clock of the USB Device Port is disabled 1 = The 48 MHz clock of the USB Device Port is enabled
2	PMC_MCKUDP AT91C_PMC_MCKUDP	USB Device Port Master Clock Automatic Disable on Suspend 0 = The automatic disable of the master clock of the USB Device Port when suspend condition occurs is disabled. 1 = The automatic disable of the master clock of the USB Device Port when suspend condition occurs is enabled.
4	PMC_UHP AT91C_PMC_UHP	USB Host Port Clock 0 = The 48 MHz clock of the USB Device Port is disabled. 1 = The 48 MHz clock of the USB Device Port is enabled.
8	PMC_PCK0 AT91C_PMC_PCK0	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
9	PMC_PCK1 AT91C_PMC_PCK1	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
10	PMC_PCK2 AT91C_PMC_PCK2	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
11	PMC_PCK3 AT91C_PMC_PCK3	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
12	PMC_PCK4 AT91C_PMC_PCK4	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
13	PMC_PCK5 AT91C_PMC_PCK5	Programmable Clock Output 0 = No effect. 1 = Enables the corresponding programmable clock output.
14	PMC_PCK6 AT91C_PMC_PCK6	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.
15	PMC_PCK7 AT91C_PMC_PCK7	Programmable Clock Output 0 = The corresponding programmable clock output is disabled. 1 = The corresponding programmable clock output is enabled.

PMC: AT91_REG PMC_PCER Peripheral Clock Enable Register

PMC AT91C_PMC_PCER 0xFFFFFC10

PID2...PID31: Peripheral Identifier 2 to 31
0 = No effect.
1 = Enables the peripheral clock.

PMC: AT91_REG PMC_PCDR Peripheral Clock Disable Register

PMC AT91C_PMC_PCDR 0xFFFFFC14

PID2...PID31: Peripheral Identifier 2 to 31
0 = No effect.
1 = Disables the peripheral clock.

PMC: AT91_REG PMC_PCSR Peripheral Clock Status Register

PMC AT91C_PMC_PCSR 0xFFFFFC18

PID2...PID31: Peripheral Identifier 2 to 31
0 = peripheral clock disabled.
1 = peripheral clock enabled.

PMC: AT91_REG PMC_MCKR Master Clock Register

PMC AT91C_PMC_MCKR 0xFFFFFC30

Offset

Name

Description

1..0

PMC_CSS
AT91C_PMC_CSS

Programmable Clock Selection
Clock selection

Value	Label	Description
0	PMC_CSS_SLOW_CLK AT91C_PMC_CSS_SLOW_CLK	Slow Clock is selected
1	PMC_CSS_MAIN_CLK AT91C_PMC_CSS_MAIN_CLK	Main Clock is selected
2	PMC_CSS_PLLA_CLK AT91C_PMC_CSS_PLLA_CLK	Clock from PLL A is selected
3	PMC_CSS_PLLB_CLK AT91C_PMC_CSS_PLLB_CLK	Clock from PLL B is selected

4..2

PMC_PRES
AT91C_PMC_PRES

Programmable Clock Prescaler
Master clock

Value	Label	Description
0	PMC_PRES_CLK AT91C_PMC_PRES_CLK	Selected clock
1	PMC_PRES_CLK_2 AT91C_PMC_PRES_CLK_2	Selected clock divided by 2
2	PMC_PRES_CLK_4 AT91C_PMC_PRES_CLK_4	Selected clock divided by 4
3	PMC_PRES_CLK_8 AT91C_PMC_PRES_CLK_8	Selected clock divided by 8
4	PMC_PRES_CLK_16 AT91C_PMC_PRES_CLK_16	Selected clock divided by 16
5	PMC_PRES_CLK_32 AT91C_PMC_PRES_CLK_32	Selected clock divided by 32
6	PMC_PRES_CLK_64 AT91C_PMC_PRES_CLK_64	Selected clock divided by 64

9..8

PMC_MDIV
AT91C_PMC_MDIV

Master Clock Division

Value	Label	Description
0	PMC_MDIV_1 AT91C_PMC_MDIV_1	The master clock and the processor clock are the same
1	PMC_MDIV_2 AT91C_PMC_MDIV_2	The processor clock is twice as fast as the master clock
2	PMC_MDIV_3 AT91C_PMC_MDIV_3	The processor clock is three times faster than the master clock
3	PMC_MDIV_4 AT91C_PMC_MDIV_4	The processor clock is four times faster than the master clock

PMC: AT91_REG PMC_PCKR Programmable Clock Register

PMC AT91C_PMC_PCKR 0xFFFFFC40

Offset

Name

Description

1..0

PMC_CSS
AT91C_PMC_CSS

Programmable Clock Selection
Clock selection

Value	Label	Description
0	PMC_CSS_SLOW_CLK AT91C_PMC_CSS_SLOW_CLK	Slow Clock is selected
1	PMC_CSS_MAIN_CLK AT91C_PMC_CSS_MAIN_CLK	Main Clock is selected
2	PMC_CSS_PLLA_CLK AT91C_PMC_CSS_PLLA_CLK	Clock from PLL A is selected
3	PMC_CSS_PLLB_CLK AT91C_PMC_CSS_PLLB_CLK	Clock from PLL B is selected

4..2

PMC_PRES
AT91C_PMC_PRES

Programmable Clock Prescaler
Master clock

Value	Label	Description
0	PMC_PRES_CLK AT91C_PMC_PRES_CLK	Selected clock
1	PMC_PRES_CLK_2 AT91C_PMC_PRES_CLK_2	Selected clock divided by 2
2	PMC_PRES_CLK_4 AT91C_PMC_PRES_CLK_4	Selected clock divided by 4
3	PMC_PRES_CLK_8 AT91C_PMC_PRES_CLK_8	Selected clock divided by 8
4	PMC_PRES_CLK_16 AT91C_PMC_PRES_CLK_16	Selected clock divided by 16
5	PMC_PRES_CLK_32 AT91C_PMC_PRES_CLK_32	Selected clock divided by 32
6	PMC_PRES_CLK_64 AT91C_PMC_PRES_CLK_64	Selected clock divided by 64

PMC: AT91_REG PMC_IER Interrupt Enable Register

PMC AT91C_PMC_IER 0xFFFFFC60

Offset	Name	Description
0	PMC_MOSCS AT91C_PMC_MOSCS	MOSC Status/Enable/Disable/Mask 0 = Main oscillator is not stabilized. 1 = Main oscillator is stabilized.
1	PMC_LOCKA AT91C_PMC_LOCKA	PLL A Status/Enable/Disable/Mask 0 = PLL A is not locked. 1 = PLL A is locked.
2	PMC_LOCKB AT91C_PMC_LOCKB	PLL B Status/Enable/Disable/Mask 0 = PLL B is not locked. 1 = PLL B is locked.
3	PMC_MCKRDY AT91C_PMC_MCKRDY	MCK_RDY Status/Enable/Disable/Mask 0 = MCK Clock is not ready to be turned on. 1 = MCK Clock is ready to be turned on.
8	PMC_PCK0RDY AT91C_PMC_PCK0RDY	PCK0_RDY Status/Enable/Disable/Mask 0 = Pad Clock0 is not ready to be turned on. 1 = Pad Clock0 is ready to be turned on.
9	PMC_PCK1RDY AT91C_PMC_PCK1RDY	PCK1_RDY Status/Enable/Disable/Mask 0 = Pad Clock1 is not ready to be turned on. 1 = Pad Clock1 is ready to be turned on.
10	PMC_PCK2RDY AT91C_PMC_PCK2RDY	PCK2_RDY Status/Enable/Disable/Mask 0 = Pad Clock2 is not ready to be turned on. 1 = Pad Clock2 is ready to be turned on.
11	PMC_PCK3RDY AT91C_PMC_PCK3RDY	PCK3_RDY Status/Enable/Disable/Mask 0 = Pad Clock3 is not ready to be turned on. 1 = Pad Clock3 is ready to be turned on.
12	PMC_PCK4RDY AT91C_PMC_PCK4RDY	PCK4_RDY Status/Enable/Disable/Mask 0 = Pad Clock4 is not ready to be turned on. 1 = Pad Clock4 is ready to be turned on.
13	PMC_PCK5RDY AT91C_PMC_PCK5RDY	PCK5_RDY Status/Enable/Disable/Mask 0 = Pad Clock5 is not ready to be turned on. 1 = Pad Clock5 is ready to be turned on.
14	PMC_PCK6RDY AT91C_PMC_PCK6RDY	PCK6_RDY Status/Enable/Disable/Mask 0 = Pad Clock6 is not ready to be turned on. 1 = Pad Clock6 is ready to be turned on.
15	PMC_PCK7RDY AT91C_PMC_PCK7RDY	PCK7_RDY Status/Enable/Disable/Mask 0 = Pad Clock7 is not ready to be turned on. 1 = Pad Clock7 is ready to be turned on.

PMC: AT91_REG PMC_IDR Interrupt Disable Register

PMC AT91C_PMC_IDR 0xFFFFFC64

Offset	Name	Description
0	PMC_MOSCS AT91C_PMC_MOSCS	MOSC Status/Enable/Disable/Mask 0 = Main oscillator is not stabilized. 1 = Main oscillator is stabilized.
1	PMC_LOCKA AT91C_PMC_LOCKA	PLL A Status/Enable/Disable/Mask 0 = PLL A is not locked. 1 = PLL A is locked.
2	PMC_LOCKB AT91C_PMC_LOCKB	PLL B Status/Enable/Disable/Mask 0 = PLL B is not locked. 1 = PLL B is locked.
3	PMC_MCKRDY AT91C_PMC_MCKRDY	MCK_RDY Status/Enable/Disable/Mask 0 = MCK Clock is not ready to be turned on. 1 = MCK Clock is ready to be turned on.
8	PMC_PCK0RDY AT91C_PMC_PCK0RDY	PCK0_RDY Status/Enable/Disable/Mask 0 = Pad Clock0 is not ready to be turned on. 1 = Pad Clock0 is ready to be turned on.
9	PMC_PCK1RDY AT91C_PMC_PCK1RDY	PCK1_RDY Status/Enable/Disable/Mask 0 = Pad Clock1 is not ready to be turned on. 1 = Pad Clock1 is ready to be turned on.
10	PMC_PCK2RDY AT91C_PMC_PCK2RDY	PCK2_RDY Status/Enable/Disable/Mask 0 = Pad Clock2 is not ready to be turned on. 1 = Pad Clock2 is ready to be turned on.
11	PMC_PCK3RDY AT91C_PMC_PCK3RDY	PCK3_RDY Status/Enable/Disable/Mask 0 = Pad Clock3 is not ready to be turned on. 1 = Pad Clock3 is ready to be turned on.
12	PMC_PCK4RDY AT91C_PMC_PCK4RDY	PCK4_RDY Status/Enable/Disable/Mask 0 = Pad Clock4 is not ready to be turned on. 1 = Pad Clock4 is ready to be turned on.
13	PMC_PCK5RDY AT91C_PMC_PCK5RDY	PCK5_RDY Status/Enable/Disable/Mask 0 = Pad Clock5 is not ready to be turned on. 1 = Pad Clock5 is ready to be turned on.
14	PMC_PCK6RDY AT91C_PMC_PCK6RDY	PCK6_RDY Status/Enable/Disable/Mask 0 = Pad Clock6 is not ready to be turned on. 1 = Pad Clock6 is ready to be turned on.
15	PMC_PCK7RDY AT91C_PMC_PCK7RDY	PCK7_RDY Status/Enable/Disable/Mask 0 = Pad Clock7 is not ready to be turned on. 1 = Pad Clock7 is ready to be turned on.

PMC: AT91_REG PMC_SR Status Register

PMC AT91C_PMC_SR 0xFFFFFC68

Offset	Name	Description
0	PMC_MOSCS AT91C_PMC_MOSCS	MOSC Status/Enable/Disable/Mask 0 = Main oscillator is not stabilized. 1 = Main oscillator is stabilized.
1	PMC_LOCKA AT91C_PMC_LOCKA	PLL A Status/Enable/Disable/Mask 0 = PLL A is not locked. 1 = PLL A is locked.
2	PMC_LOCKB AT91C_PMC_LOCKB	PLL B Status/Enable/Disable/Mask 0 = PLL B is not locked. 1 = PLL B is locked.
3	PMC_MCKRDY AT91C_PMC_MCKRDY	MCK_RDY Status/Enable/Disable/Mask 0 = MCK Clock is not ready to be turned on. 1 = MCK Clock is ready to be turned on.
8	PMC_PCK0RDY AT91C_PMC_PCK0RDY	PCK0_RDY Status/Enable/Disable/Mask 0 = Pad Clock0 is not ready to be turned on. 1 = Pad Clock0 is ready to be turned on.
9	PMC_PCK1RDY AT91C_PMC_PCK1RDY	PCK1_RDY Status/Enable/Disable/Mask 0 = Pad Clock1 is not ready to be turned on. 1 = Pad Clock1 is ready to be turned on.
10	PMC_PCK2RDY AT91C_PMC_PCK2RDY	PCK2_RDY Status/Enable/Disable/Mask 0 = Pad Clock2 is not ready to be turned on. 1 = Pad Clock2 is ready to be turned on.
11	PMC_PCK3RDY AT91C_PMC_PCK3RDY	PCK3_RDY Status/Enable/Disable/Mask 0 = Pad Clock3 is not ready to be turned on. 1 = Pad Clock3 is ready to be turned on.
12	PMC_PCK4RDY AT91C_PMC_PCK4RDY	PCK4_RDY Status/Enable/Disable/Mask 0 = Pad Clock4 is not ready to be turned on. 1 = Pad Clock4 is ready to be turned on.
13	PMC_PCK5RDY AT91C_PMC_PCK5RDY	PCK5_RDY Status/Enable/Disable/Mask 0 = Pad Clock5 is not ready to be turned on. 1 = Pad Clock5 is ready to be turned on.
14	PMC_PCK6RDY AT91C_PMC_PCK6RDY	PCK6_RDY Status/Enable/Disable/Mask 0 = Pad Clock6 is not ready to be turned on. 1 = Pad Clock6 is ready to be turned on.
15	PMC_PCK7RDY AT91C_PMC_PCK7RDY	PCK7_RDY Status/Enable/Disable/Mask 0 = Pad Clock7 is not ready to be turned on. 1 = Pad Clock7 is ready to be turned on.

PMC: AT91_REG PMC_IMR Interrupt Mask Register

PMC AT91C_PMC_IMR 0xFFFFFC6C

Offset	Name	Description
0	PMC_MOSCS AT91C_PMC_MOSCS	MOSC Status/Enable/Disable/Mask 0 = Main oscillator is not stabilized. 1 = Main oscillator is stabilized.
1	PMC_LOCKA AT91C_PMC_LOCKA	PLL A Status/Enable/Disable/Mask 0 = PLL A is not locked. 1 = PLL A is locked.
2	PMC_LOCKB AT91C_PMC_LOCKB	PLL B Status/Enable/Disable/Mask 0 = PLL B is not locked. 1 = PLL B is locked.
3	PMC_MCKRDY AT91C_PMC_MCKRDY	MCK_RDY Status/Enable/Disable/Mask 0 = MCK Clock is not ready to be turned on. 1 = MCK Clock is ready to be turned on.
8	PMC_PCK0RDY AT91C_PMC_PCK0RDY	PCK0_RDY Status/Enable/Disable/Mask 0 = Pad Clock0 is not ready to be turned on. 1 = Pad Clock0 is ready to be turned on.
9	PMC_PCK1RDY AT91C_PMC_PCK1RDY	PCK1_RDY Status/Enable/Disable/Mask 0 = Pad Clock1 is not ready to be turned on. 1 = Pad Clock1 is ready to be turned on.
10	PMC_PCK2RDY AT91C_PMC_PCK2RDY	PCK2_RDY Status/Enable/Disable/Mask 0 = Pad Clock2 is not ready to be turned on. 1 = Pad Clock2 is ready to be turned on.
11	PMC_PCK3RDY AT91C_PMC_PCK3RDY	PCK3_RDY Status/Enable/Disable/Mask 0 = Pad Clock3 is not ready to be turned on. 1 = Pad Clock3 is ready to be turned on.
12	PMC_PCK4RDY AT91C_PMC_PCK4RDY	PCK4_RDY Status/Enable/Disable/Mask 0 = Pad Clock4 is not ready to be turned on. 1 = Pad Clock4 is ready to be turned on.
13	PMC_PCK5RDY AT91C_PMC_PCK5RDY	PCK5_RDY Status/Enable/Disable/Mask 0 = Pad Clock5 is not ready to be turned on. 1 = Pad Clock5 is ready to be turned on.
14	PMC_PCK6RDY AT91C_PMC_PCK6RDY	PCK6_RDY Status/Enable/Disable/Mask 0 = Pad Clock6 is not ready to be turned on. 1 = Pad Clock6 is ready to be turned on.
15	PMC_PCK7RDY AT91C_PMC_PCK7RDY	PCK7_RDY Status/Enable/Disable/Mask 0 = Pad Clock7 is not ready to be turned on. 1 = Pad Clock7 is ready to be turned on.