H8SXSLASH1663R datasheet(1251/1504 Pages) RENESAS

1251 / 1504 page

Section 26 Boundary Scan

Rev. 2.00 Sep. 24, 2008 Page 1219 of 1468

REJ09B0412-0200

26.6

Usage Notes

1. In serial transfer, data are input or output in LSB order (see figure 26.3).

From TDI pin

JTIR and JTIDR

Bit 31

Bit 30

Bit 1

Bit 0

Shift

Serial data

input/output

in LSB order

Notes: Serial data output from JTIR to TDO is not possible.

Serial data input from TDI to JTIDR is not possible.

To TDO pin

Figure 26.3 Serial Data Input/Output

2. If a pin with open-drain function is SAMPLEed while its open-drain function is enabled and

while the corresponding OUT register is set to 1, the corresponding Control register is cleared

to 0 (the pin status is Hi-Z). If the pin is SAMPLEed while the corresponding OUT register is

cleared to 0, the corresponding Control register is 1 (the pin status is 0)

3. Pins of the boundary scan (TCK, TDI, TMS, and

TRST) have to be pulled up by pull-up

resistors.

4. Power supply pins (Vcc, VcL, Vss, AVcc, AVss, AVref, PLLVcc, PLLVss, DrVcc, and

DrVss) cannot be boundary-scanned.

5. Clock pins (EXTAL and XTAL) cannot be boundary-scanned.

6. Reset and standby signals (

RES and STBY) cannot be boundary-scanned.

7. Boundary scan pins (TCK, TMS,

TRST, TDI, and TDO) cannot be boundary-scanned.

8. The boundary scan function is not available when this LSI are in the following states.

(1) Reset state

(2) Hardware standby mode, software standby mode, and deep software standby mode

H8SX/1663R Datasheet(PDF) 1251 Page - Renesas Technology Corp