32186 datasheet(794/1032 Pages) RENESAS

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REAL TIME DEBUGGER (RTD)

15-8

32185/32186 Group Hardware Manual

Rev.1.10 REJ09B0235-0110 May 15, 07

Figure 15.4.10 RCV Command Data Format

1111

19 18 17 16

Command (RCV)

RTDRXD

Notes: • All of 32 data bits are "1."

• The RCV command must always be issued twice in succession.

(MSB side)

(LSB side)

32 clock

periods

RDR(A1)

VEI

2 clock periods

RTDCLK

RTDRXD

RTDTXD

RTDACK

RTD interrupt request

RTD interrupt

D (A1)

Read value

Note 1: WRR command can also be used.

Notes: • (An) = Specified address

32 clock

periods

32 clock

periods

32 clock

periods

(Note 1)

D (A1)

Read value

• D(An) = Data at specified address (An)

Figure 15.4.9 Operation of the VEI (Interrupt Request) Command

15.4.6 Operation of RCV (Recover from Runaway)

If the RTD runs out of control, the RCV (recover from runaway) command may be issued to recover from

the runaway condition without the need to reset the system. The RCV command must always be issued

twice in succession. Also, any command issued immediately following the RCV command must have all of

its bits 20–31 set to "1."

15.4 Functional Description of RTD

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