Datasheet

Section 10 I/O Ports
Rev. 3.00 Mar 17, 2006 page 474 of 926
REJ09B0283-0300
10.7.4 Pin Functions
Port 7 pins also function as DMAC I/Os and EXDMAC I/Os. The correspondence between the
register specification and the pin functions is shown below.
• P75/DACK1/EDACK1
The pin function is switched as shown below according to the combination of bit DMACS in
PFCR2, bit SAE1 in DMABCRH, bit AMS in EDMDR_1, and bit P75DDR.
Modes 1, 2, 3
*
(EXPE = 1), 4, 5, 6, 7 (EXPE = 1)
AMS 0 1
SAE1 0 1 —
DMACS — 0 1 —
P75DDR 0101——
Pin function P75
input
P75
output
P75
input
P75
output
DACK1
output
EDACK1
output
Modes 3
*
(EXPE = 0), 7 (EXPE = 0)
AMS —
SAE1 0 1
DMACS — 0 1
P75DDR 0101—
Pin function P75
input
P75
output
P75
input
P75
output
DACK1
output
Note: * Only in H8S/2678R Group.