Parallel I/O Port; Characteristics; Block Diagram - Toshiba TMPR4937 Manual

13. Parallel I/O Port

13.1 Characteristics

The TX4937 on-chip Parallel I/O port (PIO) is a 16-bit general-purpose parallel port. The input/output
direction and the port type during output (totem pole output/open drain output) can be set for each bit.

13.2 Block Diagram

SDRAMC
IM-Bus
CB[7:0]
ADDR[18] (SEL1)
PIO
Input Data Register
Output Data Register
Direction Control Register
OD Control Register
Figure 13.2.1 Parallel I/O Block Diagram
13-1
Chapter 13 Parallel I/O Port
8
CB[7:0]/PIO[15:8]
8
8
PIO[7:0]
8
8