Oscillator Register (Osc_Reg); Scratch Registers (Scratchx_Reg) Field Descriptions - Texas Instruments TMS320C6A816 Series Technical Reference Manual

Registers

15.3.19 Oscillator Register (OSC_REG)

The OSC_REG is used to program the oscillator resistance value and the SW_RESET bit can be used
to reset the RTC. This is the only way to reset the RTC.
31
15
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Bit Field
31-6 Reserved
5 SWRESET
4 OSC32KPWRDNR
3-0 SWRESPROG
NOTE: SW_RESET bit is set to 1 to reset the RTC module. This bit is self-clearing, and is
always read as 0. CPU must care of interrupt handling before RTC is reset. After setting
the SW_RESET bit, you must not access any of the RTC registers for 3 32kHz clock
cycles (roughly 2200 OCP cycles).
15.3.20 Scratch Registers (SCRATCHx_REG)
The SCRATCH_REG is used to hold some required values for the RTC register.
31
LEGEND: R/W = Read/Write; -n = value after reset
Table 15-24. Scratch Registers (SCRATCHx_REG) Field Descriptions
Bit Field
31-0 RTCSCRATCHx
1558
Real-Time Clock (RTC)
Preliminary
Figure 15-24. Oscillator Register (OSC_REG)
Reserved
R-0
Table 15-23. Oscillator Register (OSC_REG) Field Descriptions
Value Description
0 Reserved
0-1 Software reset bit
0-1 Control of 32 kHz Oscillator powerdown
0-Fh Value of the oscillator resistance
Figure 15-25. Scratch Registers (SCRATCHx_REG)
RTCSCRATCHx
Value Description
0-FFFF FFFFh Scratch registers, available to program
© 2011, Texas Instruments Incorporated
Reserved
R-0
6 5
SWRESET OSC32KPWRDNR
R/W-0 R/W-0(H/W)
R/W-0
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4 3
SWRESPROG
R/W-7h
SPRUGX9 – 15 April 2011
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