R0K572030S000BE Renesas Electronics America, R0K572030S000BE Datasheet - Page 1229
R0K572030S000BE
Manufacturer Part Number
R0K572030S000BE
Description
KIT DEV FOR SH7203
Manufacturer
Renesas Electronics America
Series
Renesas Starter Kits (RSK)r
Type
MCUr
Specifications of R0K572030S000BE
Contents
CPU Board, LCD Module, E10A-Lite Emulator, Cable, QuickStart Guide and CD-ROM
Silicon Manufacturer
Renesas
Kit Contents
Board
Silicon Family Name
SH7203
Silicon Core Number
R5S72030W200FP
Tool / Board Applications
General Purpose MCU, MPU, DSP, DSC
Mcu Supported Families
SH7203
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
SH7203
Lead Free Status / Rohs Status
Compliant
- Current page: 1229 of 1686
- Download datasheet (10Mb)
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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