Freescale Semiconductor SC140 specifications Event Detection Unit EDU Channels and Registers

Event Detection Unit (EDU) Channels and Registers

4.9Event Detection Unit (EDU) Channels and Registers

The various event detection channels and corresponding registers are described in the sections that follow.

4.9.1 Address Event Detection Channel (EDCA)

The EDCA can be used to detect the following:

•Program breakpoint, specified on a specific PC value or range

•Data address breakpoint, specified on a specific data address or range. The functionality of these registers is described in the following sections.

4.9.1.1 EDCA Control Registers (EDCAi_CTRL)

EDCAi_CTRL is a 16-bit register used to control the behavior of the corresponding EDCA. The following sections describe the functionality of each bit in the EDCAi_CTRL register.

Figure 4-21 displays the configuration of the EDCAi_CTRL register.

	BIT 15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	BIT 0
				EDCAEN				CS	CBCS		CACS		ATS			BS
TYPE	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw	rw
RESET	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Figure 4-21. EDCA Control Register (EDCAi_CTRL)

Table 4-19 describes the EDCAi_CTRL fields.

Table 4-19. EDCA_CTRL Description

Name Description Settings

RReserved

Bits 14-15

4-54 SC140 DSP Core Reference Manual