Renesas SH7709S Manual De Usuario

Rev. 5.00, 09/03, page 642 of 760

mode, boundary scan and emulator functions can be used.  The input level at the 

ASEMD0 pin

should be held for at least one cycle after 

RESETP negation.

A

A

A

ASSSSEEEEB

B

B

BR

R

R

RKAK

KAK

KAK

KAK: Dedicated emulator pin

Figure 22.1 shows a block diagram of the UDI.

SDIR

TCK

TDO

TDI

TMS

TRST

SDBPR

MUX

SDBSR

Shift register

TAP controller

Decoder

Local 

bus

The UDI has the following registers.

•

 

SDBPR:  Bypass register

•

 

SDIR:  Instruction register

•

 

SDBSR: Boundary scan register