Texas Instruments SM320C6455-EP Reset Controller Register, Reset Type Status Register Description

SM320C6455-EP

FIXED-POINT DIGITAL SIGNAL PROCESSOR

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SPRS462B – SEPTEMBER 2007 – REVISED JANUARY 2008

7.6.7Reset Controller Register

The reset type status (RSTYPE) register (029A 00E4) is the only register for the reset controller. This register falls in the same memory range as the PLL1 controller registers [029A 0000 - 029A 01FF] (see Table 7-18).

7.6.7.1 Reset Type Status Register Description

The rest type status (RSTYPE) register latches the cause of the last reset. If multiple reset sources occur simultaneously, this register latches the highest priority reset source. The reset type status register is shown in Figure 7-7and described in Table 7-13.

31							16
			Reserved
			R-0
15			4	3	2	1	0
			Reserved	SRST	MRST	WRST	POR
			R-0	R-0	R-0	R-0	R-0
LEGEND: R/W = Read/Write; R = Read only; -n= value after reset
		Figure 7-7. Reset Type Status Register (RSTYPE) [Hex Address: 029A 00E4]
		Table 7-13. Reset Type Status Register (RSTYPE) Field Descriptions
Bit	Field	Value	Description
31:4	Reserved		Reserved. The reserved bit location is always read as 0. A value written to this field has no effect.
3	SRST		System reset.
		0	System Reset was not the last reset to occur.
		1	System Reset was the last reset to occur.
2	MRST		Max reset.
		0	Max Reset was not the last reset to occur.
		1	Max Reset was the last reset to occur.
1	WRST		Warm reset.
		0	Warm Reset was not the last reset to occur.
		1	Warm Reset was the last reset to occur.
0	POR		Power-on reset.
		0	Power-on Reset was not the last reset to occur.
		1	Power-on Reset was the last reset to occur.

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