HD6475328-CP10 Datasheet, PDF (144/459 Pages) Hitachi Semiconductor – original Hitachi CMOS microcomputer unit (MCU)

6. When 128 bytes have been transferred (DTCR = 0), the DTC generates a CPU interrupt. The
interrupt type is RXI.
7. The user-coded RXI interrupt-handling routine processes the received data and disables further
data transfer (by clearing the RIE bit, for example).
Figure 6-6 shows the DTC vector table and data in RAM for this example.
DTC vector table
Address
H'00AA
H'00AB
H'FB
H'80
Address
H'FB80
H'FB81
H'FB87
RAM
H'20
H'00
H'FF
H'DD
H'FC
H'00
H'00
H'80
Mode
Source address
Destination address
Counter
H'FC00
Receive data 1
Receive data 2
H'FC7F Receive data 128
Transferred
by DTC
RDR
SCI
Figure 6-6 Use of DTC to Receive Data via Serial Communication Interface
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