HD6412350 Hitachi, HD6412350 Datasheet - Page 228

• Manufacturer Part Number: HD6412350
• Description: (HD6412350 / HD6432351) 16-BIT MICROCONTROLLER
• Manufacturer: Hitachi

Bits 7 to 4—Data Transfer Enable (DTE): When DTE = 0, data transfer is disabled and the
activation source selected by the data transfer factor setting is ignored. If the activation source is
an internal interrupt, an interrupt request is issued to the CPU or DTC. If the DTIE bit is set to 1
when DTE = 0, the DMAC regards this as indicating the end of a transfer, and issues a transfer
end interrupt request to the CPU or DTC.
The conditions for the DTE bit being cleared to 0 are as follows:
When DTE = 1, data transfer is enabled and the DMAC waits for a request by the activation
source selected by the data transfer factor setting. When a request is issued by the activation
source, DMA transfer is executed.
The condition for the DTE bit being set to 1 is as follows:
Bit 7—Data Transfer Enable 1B (DTE1B): Enables or disables data transfer on channel 1B.
Bit 7
DTE1B
0
1
Bit 6—Data Transfer Enable 1A (DTE1A): Enables or disables data transfer on channel 1A.
Bit 6
DTE1A
0
1
208
When initialization is performed
When the specified number of transfers have been completed in a transfer mode other than
repeat mode
When 0 is written to the DTE bit to forcibly abort the transfer, or for a similar reason
When 1 is written to the DTE bit after the DTE bit is read as 0
Description
Data transfer disabled
Data transfer enabled
Description
Data transfer disabled
Data transfer enabled
(Initial value)
(Initial value)