Panasonic MN101C77C User Manual

Chapter 14    Automatic Transfer Controller

Operation

XIV - 28

In transfer mode A, 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 1

00000 - 3FFFF

Set the source address in 18-bit memory pointer 0 (AT1MAP0H, M, L), and set the destination address

in 18-bit memory pointer 1 (AT1MAP0H, M, L).

Transfer mode A does not have an incrementing function for the memory pointers. The data transfer

executes for a fixed address.

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.