Panasonic MN101C77C User Manual

Operation

Chapter 14    Automatic Transfer Controller

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In transfer mode D, ATC1 automatically transfers one byte of data from any memory space to any other

memory space every time an ATC1 activation request occurs.

AT1MAP0

AT1MAP0 + 1

AT1MAP0 + 2

AT1MAP0 + 3

Memory Pointer 0

00000 - 3FFFF

AT1MAP1

AT1MAP1 + 1

AT1MAP1 + 2

AT1MAP1 + 3

Memory Pointer 0

00000 - 3FFFF

(1)

(2)

(2)

Set the source address in 18-bit memory pointer 1 (AT1MAP1H, M, L), and set the destination address

in 18-bit memory pointer 0 (AT1MAP0H, M, L).

In transfer mode D, the values in memory pointers 0 and 1 increment by 1 each time a byte-length data

transfer ends. As a result, the source and destination addresses for the next transfer are one address

higher than those for the original transfer.

Set the data transfer count for ATC1 in the transfer data counter (AT1TRC). The counter can be set  to

a maximum of 255 transfers. The counter decrements each time ATC1 is activated. When it reaches

x'00', an interrupt (ATC1IRQ) occurs and the automatic transfer ends.