HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 164

• Manufacturer Part Number: HD64570
• Description: Serial Communications Adaptor
• Manufacturer: HITACHI [Hitachi Semiconductor]

A frame end interrupt is generated when status data is set in FST. After the interrupt has been
generated, the status of the received frame can be read from FST.
This method is used for MPU data transfer. In this case, residual bit frame interrupt, abort end
frame interrupt, and CRC error interrupt must be disabled.
Rev. 0, 07/98, page 148 of 453
Receive
buffer
TRB
Data read
Figure 5.5 Frame Status Register (FST)
EOM
1
1
Status
FIFO
ST2
TRB: TX/RX buffer register
ST2: Status register 2
FST: Frame status register
1
Status set
FST