DM6210 datasheet(39/91 Pages) ETC

39 / 91 page

4-7

BA + 12: Digital I/O Port 0 (Read/Write 8-bit)

This port transfers the 8-bit Port 0 digital input/output data between the module and external devices. The

bits are programmed as input or output in groups of 4 (P0.0 - P0.3 and P0.4 - P0.7) by writing to the Direction

set as outputs, a read reads the last value sent out on the line and a write writes the current loaded value out to

the line.

Note that when any reset of the computer is performed , all digital lines are reset to inputs and their

corresponding output registers are cleared.

BA + 13: Digital I/O Port 1 (Read/Write 8-bit)

This port transfers the 8-bit Port 1 digital input/output data between the module and external devices. The

bits are programmed as input or output in groups of 4 (P1.0 - P1.3 and P1.4 - P1.7) by writing to the Direction

set as outputs, a read reads the last value sent out on the line and a write writes the current loaded value out to

the line.

Note that when any reset of the computer is performed , all digital lines are reset to inputs and their

corresponding output registers are cleared.

3 3 3 3 3 3 3 3

BA + 14: Digital I/O Strobe Select (Read/Write 8-bit)

This register is used to select the strobe source for the digital inputs when either Port 0 or Port 1 is

programmed for latch mode. Both Port 0 and Port 1 must use the same strobe signal. Reading this register

returns the current settings.

3 3 3 3 3 3 3 3

Port 0 & 1 Latched Input Strobe Select

00 = External Clock 0 (CN3 - 39)

01 = External Clock 1 (CN3 - 43)

10 = External Clock 2 (CN3 - 45)

11 = reserved

DM6210 датащи(PDF) 39 Page - List of Unclassifed Manufacturers