SH7059 Datasheet, PDF (732/1042 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

23. I/O Ports (I/O)
23.13 POD (Port Output Disable) Control
The output port drive buffers for the address bus pins (A20 to A0) and data bus pins (D15 to D0) can be controlled by the
POD (port output disable) pin input level. However, this function is enabled only when the address bus pins (A20 to A0)
and data bus pins (D15 to D0) are designated as general output ports.
Output buffer control by means of POD is performed asynchronously from bus cycles.
POD
0
1
Address Bus Pins (A20 to A0) and
Data Bus Pins (D15 to D0) (when designated as output ports)
Enabled (high-impedance)
Disabled (general output)
Rev.3.00 Mar. 12, 2008 Page 642 of 948
REJ09B0177-0300