Section 1 Overview
Rev. 2.00 Mar 09, 2006 page 7 of 906
REJ09B0292-0200
Item
Specifications
Direct memory
access controller
(DMAC),
2 channels
•
4-Gbyte address space, maximum 16M (16,777,216) transfers
•
Selection of 8-bit, 16-bit, 32-bit, or 16-byte transfer data length
•
Parallel execution of CPU instruction processing and DMA operation
possible in case of cache hit
•
Selection of dual address or single address mode
Single address (data transfer rate of one transfer unit in one bus cycle)
Dual address (data transfer rate of one transfer unit in two bus cycles)
When synchronous DRAM is connected, 16-byte continuous read
→
continuous write transfer is possible (dual)
•
When SDRAM is connected, clocked single-address transfer is possible at
rates up to 31.25 MHz
•
Cycle stealing or burst transfer
•
Relative channel priorities can be set (fixed mode/round robin mode)
•
DMA transfer is possible for the following devices:
External memory, on-chip memory, on-chip supporting modules
(excluding DMAC, BSC, UBC, cache, E-DMAC, EtherC)
•
External requests, DMA transfer requests from on-chip supporting
modules, auto requests
•
Interrupt request (DEIn) can be issued to CPU at end of data transfer
•
DACK used for DREQ sampling (however, there is always one overrun as
there is one acceptance before first DACK)
On-chip RAM
•
4-kbyte
X-RAM
•
4-kbyte
Y-RAM
Ethernet controller
direct memory
access controller
(E-DMAC),
2 channels
•
Transfer possible between EtherC and external memory/on-chip memory
•
16-byte burst transfer possible
•
Single address transfer
•
Chain block transfer
•
32-bit transfer data width
•
4-Gbyte address space
•
Data transfer possible from across byte boundaries in transmission
•
Each transmit and receive FIFO includes 2 kbytes
Summary of Contents for SH7616
Page 10: ...Rev 2 00 Mar 09 2006 page x of xxvi ...
Page 132: ...Section 2 CPU Rev 2 00 Mar 09 2006 page 106 of 906 REJ09B0292 0200 ...
Page 568: ...Section 12 16 Bit Free Running Timer FRT Rev 2 00 Mar 09 2006 page 542 of 906 REJ09B0292 0200 ...
Page 582: ...Section 13 Watchdog Timer WDT Rev 2 00 Mar 09 2006 page 556 of 906 REJ09B0292 0200 ...
Page 706: ...Section 16 Serial I O SIO Rev 2 00 Mar 09 2006 page 680 of 906 REJ09B0292 0200 ...
Page 820: ...Section 19 Pin Function Controller PFC Rev 2 00 Mar 09 2006 page 794 of 906 REJ09B0292 0200 ...
Page 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
Page 935: ...SH7616 Hardware Manual ...