r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 678

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 10 I/O Ports
10.15.5 Pin Functions
Port G pins also function as the pins for JTAG inputs and bus control signal I/Os. The
correspondence between the register specification and the pin functions is shown below.
• PG6/BREQ-A/TDI*
Notes: 1. Supported only in the 145-pin package.
Rev. 1.00 Sep. 19, 2008 Page 650 of 1270
REJ09B0466-0100
Operating
mode
EXPE
BRLE
BREQS
PG6DDR
Pin
function
The pin function is switched as shown below according to the combination of the operating
mode, bit EXPE, bit BRLE in BCR of the bus controller, bit BREQS in PFCR4, and bit
PG6DDR.
2. TDI input when BSCANE pin = 1 in the 145-pin package.
input
PG6
BRLE = 1 and
BRLE = 0 or
BREQS = 1
0
output
1
PG6
1, 2, 4
1

BREQS = 0
BRLE = 1
BREQ-A
input
and

input
PG6
0
TDI input*

0
output
PG6
1
2
input
PG6
BRLE = 1 and
BRLE = 0 or
BREQS = 1
0
7
output
PG6
1
1
BREQS = 0
BRLE = 1
BREQ-A
input
and
