HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 771
HD6417712BPV
Manufacturer Part Number
HD6417712BPV
Description
MPU 1.5/3.3V 0K PB-FREE 256-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH Ethernetr
Datasheet
1.HD6417712BPV.pdf
(980 pages)
Specifications of HD6417712BPV
Core Processor
SH-3 DSP
Core Size
32-Bit
Speed
200MHz
Connectivity
EBI/EMI, Ethernet, FIFO, SCI, SIO
Peripherals
DMA, POR, WDT
Number Of I /o
24
Program Memory Type
ROMless
Ram Size
16K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Oscillator Type
External
Operating Temperature
-20°C ~ 75°C
Package / Case
256-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Available stocks
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Part Number:
HD6417712BPV
Manufacturer:
Renesas Electronics America
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10 000
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This LSI has an on-chip two-channel direct memory access controller (E-DMAC0/1) directly
connected to the Ethernet controller (EtherC). By using the DMAC contained in the E-DMAC, the
E-DMAC transfers transmit/receive data between the transmit/receive FIFO in the E-DMAC and a
user-specified data storage destination (buffer) by DMA transfer. At DMA transfer, information
referenced by the E-DMAC is referred to as a transmit/receive descriptor, and the user places this
descriptor in memory.
This function reduces the load on the CPU and enables efficient data transfer control to be
achieved. The E-DMAC0 and E-DMAC1 control the data transmission/reception from the MAC-0
and MAC-1 of EtherC respectively. (Hereafter the channel controlled by the E-DMAC0 is channel
0. The channel controlled by the E-DMAC1 is channel 1.)
Figure 19.1 shows the configuration of the E-DMAC, and the descriptors and transmit/receive
buffers in memory.
19.1
The E-DMAC has the following features:
• Contains two-channel independent transmit/receive DMAC
• The load on the CPU is reduced by means of a descriptor management system
• Transmit/receive frame status information is indicated in descriptors
• Achieves efficient system bus utilization through the use of DMA block transfer (16-byte
• Supports single-frame/single-descriptor operation and single-frame/multi-frame (multi-buffer)
Note: The E-DMAC cannot access peripheral modules.
EDMAS20B_000020020900
units)
operation
Section 19 Ethernet Controller Direct Memory Access
Features
Section 19 Ethernet Controller Direct Memory Access Controller (E-DMAC)
Controller (E-DMAC)
Rev. 1.00 Dec. 27, 2005 Page 727 of 932
REJ09B0269-0100
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