7906 datasheet(371/531 Pages) RENESAS

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DEBUG FUNCTION

7906 Group User’s Manual Rev.2.0

17-10

17.4 Out-of-address-area detection mode

When the contents of PG and PC go out of the range of the specified area, an address matching detection

interrupt request occurs.

17.4.1 Setting procedure for out-of-address-area detection mode

Figure 17.4.1 shows an initial setting example for registers relevant to the out-of-address-area detection

mode.

Fig. 17.4.1 Initial setting example for registers relevant to out-of-address-area detection mode

Notes 1: Be sure to set this bit to “1” immediately before reading from or

writing to the address compare registers 0, 1. Then, be sure to

clear this bit to “0” immediately after this reading or writing.

2: This processing is unnecessary when no maskable interrupt is

used.

Selection of detect condition

Debug control register 0 (Address 6616)

Detect enable bit

0 : Detection disabled.

Selection of out-of-address-area detection

Detection starts.

Processing for setting of address compare registers

Debug control register 1 (Address 6716)

Address compare register access enable bit

(Note 1)

1 : Enabled.

b23

Address compare register 0

(Addresses 6A16 to 6816)

The start address of the programming

area is set here.

Setting of address compare registers

Debug control register 1 (Address 6716)

Address compare register access enable bit

(Note 1)

0 : Disabled.

Set the detect enable bit to “1.”

Debug control register 0 (Address 6616)

Detect enable bit

1 : Detection enabled.

Disables interrupts.

The interrupt disable flag (I) is set to “1.”

Clear the interrupt disable flag (I) to “0” (Note 2).

b23

Address compare register 1

(Addresses 6D16 to 6B16)

The last address of the programming

area is set here.

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