HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 810

• 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)
(b) Receive Descriptor 1 (RD1)
In RD1, the user specifies the data length of a receive buffer usable by the corresponding
descriptor. After reception of a frame, RD1 indicates the length of a frame received by the
E-DMAC.
The user should set RD1 before the start of a read by the E-DMAC.
(c)
RD2 indicates the start address of the corresponding 32-bit width receive buffer. Set the start
address of a receive buffer on a longword boundary. When an SDRAM is connected, set the start
address of a receive buffer on a 16-byte boundary.
The user should set RD2 before the start of a read by the E-DMAC.
Rev. 1.00 Dec. 27, 2005 Page 766 of 932
REJ09B0269-0100
Bit
31 to 16
15 to 0
Receive Descriptor 2 (RD2)
Bit Name
RBL
RDL
Initial
Value
All 0
All 0
R/W
R/W
R
Description
Receive Buffer Data Length (in bytes, to be specified
on 16-byte boundary)
Set the length of data that can be received by the
corresponding receive buffer in bytes.
Set a receive buffer length on a 16-byte boundary
(with bits 19 to 16 cleared to 0).
In single-frame/single-buffer (descriptor) operation,
the maximum receive frame length excluding CRC
data is 1514 bytes. When specifying a receive buffer
length, set 1520 bytes (H'05F0), which is determined
considering the maximum receive frame length and a
16-byte boundary.
Receive Data Length
Indicate the data length of a receive frame stored in
the receive buffer.
Receive data transferred to the receive buffer does
not include CRC data (4 bytes) placed at the end of a
frame. As a receive frame length, the number of bytes
(valid data bytes) not including CRC data are
reported.
In single-frame/multi-buffer (descriptor) operation,
only the receive data length of the last descriptor is
valid. The receive data length of an intermediate
descriptor has no meaning.