DS72030W200FPV Renesas Electronics America, DS72030W200FPV Datasheet - Page 1229
DS72030W200FPV
Manufacturer Part Number
DS72030W200FPV
Description
MPU, 32BIT, SH7203, ROMLESS, 240QFP
Manufacturer
Renesas Electronics America
Series
SH7200r
Datasheet
1.R5S72030W200FP.pdf
(1686 pages)
Specifications of DS72030W200FPV
Core Size
32bit
Program Memory Size
32KB
Cpu Speed
200MHz
Digital Ic Case Style
QFP
No. Of Pins
240
Supply Voltage Range
1.1V To 1.3V
Operating Temperature Range
-20°C To +85°C
Svhc
No SVHC
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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Section 23 USB 2.0 Host/Function Module (USB)
23.4.4
Buffer Memory
(1)
Buffer Memory Allocation
Figure 23.9 shows an example of a buffer memory map for this module. The buffer memory is an
area shared by the CPU and this module. In the buffer memory status, there are times when the
access right to the buffer memory is allocated to the user system (CPU side), and times when it is
allocated to this module (SIE side).
The buffer memory sets independent areas for each pipe. In the memory areas, 64 bytes comprise
one block, and the memory areas are set using the first block number of the number of blocks
(specified using the BUFNMB and BUFSIZE bits in PIPEBUF). Moreover, three FIFO ports are
used for access to the buffer memory (reading and writing data). A pipe is assigned to the FIFO
port by specifying the pipe number using the CURPIPE bit in C/DnFIFOSEL.
The buffer statuses of the various pipes can be confirmed using the BSTS bit in DCPCTR and the
INBUFM bit in PIPEnCTR. Also, the access right of the FIFO port can be confirmed using the
FRDY bit in C/DnFIFOCTR.
Rev. 3.00 Sep. 28, 2009 Page 1197 of 1650
REJ09B0313-0300
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