TC9318AFAG datasheet(17/56 Pages) TOSHIBA

17 / 56 page

TC9318AFAG/AFBG

2006-07-27

I/O Map

All ports in the device are expressed by matrix of four input and output instruction (OUT1~2 instructions,

IN1~2 instructions) and 4 bits of code No. C. Assignment of these ports is indicated previously as I/O map. In

the I/O map, port names treated in the execution of each input and output instruction are assigned horizontally,

while code No. of port are assigned vertically. G-register and data register are also treated as port.

The OUT1~2 instructions are assigned to output port, and IN1~2 instructions are assigned to input port.

Note 11: The port indicated with oblique line on I/O map is a port not existing in the device. In the execution of output

instruction, when data is output to the non-existing output port, no effect is given to the content of other port

or data memory. When non-existing input port is designated during the execution of input instruction, the

content read into the data memory becomes “1”.

Note 12: Among the output ports on I/O map, * marked port is unused port. The data output here becomes “don’t

care”.

Note 13: Regarding the content of port expressed in 4 bits, Y1 corresponds to the least significant of the data of data

memory, and Y8 to the most significant bit.

Each port assigned by four input and output instruction and code No. C is coded as follows:

(example)

The G-register is set by OUT1 instruction wite code “F”.

Therefore, the notation is “φL1F”.

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