HD64570 HITACHI [Hitachi Semiconductor], HD64570 Datasheet - Page 315

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

6.4.5
Tables 6.10 and 6.11 list the DMAC characteristics in different modes.
Table 6.10 DMAC Characteristics in CPU Modes 0, 2, and 3*
Mode
Single-block
transfer mode
Chained-block
transfer mode
DMAC Characteristics
Transfer Direction
Memory to MSCI
MSCI to memory
Memory to MSCI
(transmission)
MSCI to memory
(reception)
DMA Transfer Rate
(states/word)
3
3
3
3
DMA Transfer
Set-Up Time*
—
—
20*
18*
Rev. 0, 07/98, page 299 of 453
3
5
1
2
DMAC Buffer
Switching Time
—
—
21/25*
26*
6
4