Datasheet

Table Of Contents
Section 6 Bus Controller
Page 120 of 846 REJ09B0140-0900 Rev. 9.00
Sep 16, 2010
H8S/2215 Group
6.3.6 Pin Function Control Register (PFCR)
PFCR performs address output control in external extended mode.
Bit Bit Name Initial Value R/W Description
7 to
4
All 0 R/W Reserved
The write value should always be 0.
3
2
1
0
AE3
AE2
AE1
AE0
1/0
*
1/0
*
0
1/0
*
R/W
R/W
R/W
R/W
Address Output Enable 3 to 0
These bits select enabling or disabling of address
outputs A8 to A23 in ROMless extended mode and
modes with ROM.
When a pin is enabled for address output, the address is
output regardless of the corresponding DDR setting.
When a pin is disabled for address output, it becomes an
output port when the corresponding DDR bit is set to 1.
0000: A8 to A23 output disabled (Initial value in modes 6, 7)
0001: A8 output enabled; A9 to A23 output disabled
0010: A8, A9 output enabled; A10 to A23 output disabled
0011: A8 to A10 output enabled; A11 to A23 output disabled
0100: A8 to A11 output enabled; A12 to A23 output disabled
0101: A8 to A12 output enabled; A13 to A23 output disabled
0110: A8 to A13 output enabled; A14 to A23 output disabled
0111: A8 to A14 output enabled; A15 to A23 output disabled
1000: A8 t o A15 output enabled; A16 to A23 output disabled
1001: A8 to A16 output enabled; A17 to A23 output disabled
1010: A8 to A17 output enabled; A18 to A23 output disabled
1011: A8 to A18 output enabled; A19 to A23 output disabled
1100: A8 to A19 output enabled; A20 to A23 output disabled
1101: A8 to A20 output enabled; A21 to A23 output disabled
(Initial value in modes 4, 5)
1110: A8 to A21 output enabled; A22, A23 output disabled
1111: A8 to A23 output enabled
Note: * In modes 4 and 5, initial value of each bit is 1. In modes 6 and 7, initial value of each bit
is 0.