tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 295

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

DMA Controller (DMAC)
Internal system clock
DREQn
DACKn
ALE
A [23:16]
AD [15:0]
RD
WR
HWR
CSn
R/W
Internal system clock
DREQn
DACKn
ALE
A [23:16]
AD [15:0]
RD
WR
HWR
CSn
R/W
•
•
Fig. 10.23 Edge Mode (from Internal RAM to External Memory)
Fig. 10.24 Edge Mode (from External Memory to Internal RAM)
Data transfer from internal RAM to external memory (multiplexed bus, 5-wait insertion, edge
mode)
Fig. 10.23 shows one timing cycle in which 16-bit data is transferred once from internal RAM
to external memory (16-bit width).
Data transfer from external memory to internal RAM (multiplexed bus, 5-wait insertion, edge
mode)
Fig. 10.24 shows one timing cycle in which 16-bit data is transferred once from external
memory (16-bit width) to internal RAM.
(7+ α ) clock
(7+α) clock
TMP19A44 (rev1.3) 10-32
Add
Add
5 waits
5 waits
Add
Add
Data
Data
TMP19A44
2010-04-01