HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 812
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
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
HD6417712BPV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Section 19 Ethernet Controller Direct Memory Access Controller (E-DMAC)
Rev. 1.00 Dec. 27, 2005 Page 768 of 932
REJ09B0269-0100
Transmission flowchart
This LSI + memory
EtherC/E-DMAC
descriptor and
transmit buffer
initialization
Transmit
[Legend]
EtherC/E-DMAC initialization: Executes a software reset with the SWR bit in EDMR set to 1.
Transmit descriptor and transmit buffer setting: Sets transmit descriptors and transmit buffers, and sets EtherC
Start of transmission: Occurs when 1 is written to the TE bit in ECMR and the TR bit in EDTRR.
Transmit descriptor read: The E-DMAC reads a transmit descriptor.
Transmit data transfer: Writes transmit data to the transmit FIFO by using DMA transfer by the E-DMAC.
Transmit descriptor write-back: The E-DMAC writes 0 to the TACT bit and writes the transmit status to the transmit descriptor.
setting
Transmit descriptor read
Transmit data transfer
Transmit data transfer
Start of transmission
Transmit descriptor
read
Transmit descriptor
write-back
Figure 19.4 Sample Transmission
Transmit descriptor
write-back
E-DMAC
Transmission
completed
and E-DMAC registers, then writes 1 to the TE bit in ECMR
and the TR bit in EDTRR.
Transmit FIFO
Flowchart (Single-Frame/Two-Descriptor)
EtherC
Frame transmission
Ethernet
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