HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 794

• Manufacturer Part Number: HD6417712BPV
• Description: MPU 1.5/3.3V 0K PB-FREE 256-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Ethernetr

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: -

Section 19 Ethernet Controller Direct Memory Access Controller (E-DMAC)
19.2.14 Receive Buffer Write Address Register (RBWAR)
RBWAR stores the address of data to be written in the receiving buffer when the E-DMAC writes
data to the receiving buffer. Which addresses in the receiving buffer are processed by the E-
DMAC can be recognized by monitoring addresses displayed in this register. The address that the
E-DMAC is actually processing may be different from the value read from this register.
19.2.15 Receive Descriptor Fetch Address Register (RDFAR)
RDFAR stores the descriptor start address that is required when the E-DMAC fetches descriptor
information from the receiving descriptor. Which receiving descriptor information is used for
processing by the E-DMAC can be recognized by monitoring addresses displayed in this register.
The address from which the E-DMAC is actually fetching a descriptor may be different from the
value read from this register.
19.2.16 Transmit Buffer Read Address Register (TBRAR)
TBRAR stores the address of the transmission buffer when the E-DMAC reads data from the
transmission buffer. Which addresses in the transmission buffer are processed by the E-DMAC
can be recognized by monitoring addresses displayed in this register. The address from which the
E-DMAC is actually reading in the buffer may be different from the value read from this register.
Rev. 1.00 Dec. 27, 2005 Page 750 of 932
REJ09B0269-0100
Bit
31 to 0
Bit
31 to 0
Bit
31 to 0
Bit Name
RBWA31 to
RBWA0
Bit Name
RDFA31 to
RDFA0
Bit Name
TBRA31 to
TBRA0
Initial
Value
All 0
Initial
Value
All 0
Initial
Value
All 0
R/W
R
R/W
R
R/W
R
Description
Receiving-Buffer Write Address
These bits can only be read. Writing is prohibited.
Description
Receiving-Descriptor Fetch Address
These bits can only be read. Writing is prohibited.
Description
Transmission-Buffer Read Address
These bits can only be read. Writing is prohibited.