参数资料
型号: S1R72803F00A100
元件分类: 微控制器/微处理器
英文描述: 1 CHANNEL(S), 400M bps, SERIAL COMM CONTROLLER, PQFP100
封装: 0.40 MM PITCH, PLASTIC, QFP20-184
文件页数: 23/115页
文件大小: 833K
代理商: S1R72803F00A100
S1R72803F00A
EPSON
11
All RAM areas are accessible from the CPU by direct
addressing.
Hardware DMA is possible to the IDE I/F for the
RxStreamArea and TXStreamArea.
HW_PageTableArea (the equivalent of 24 pages)
and HW_RxHeaderArea and HW_TXHeaderArea
(the equivalent of 1 header, respectively) are assured.
The RxORB and TxORB areas are usable by firmware
alone.
The RxHeaderArea, RxORBArea, TxORB,
TXStreamArea and RxStreamArea are RingBuffers.
Even at the time of execution of data transmission/
reception according to 1394 or IDE DMA, data
among the areas are guaranteed by hardware . (The
size of each RingBuffer is variable by settings on the
TxStreamAreaStart, TxStreamAreaEnd, and
RxStreamAreaStart.)
The TxStreamArea and RxStreamArea is usable as
one StreamArea by overlaying them.
The Post**Ptr and Used**Ptr of the RxHeaderArea,
RxORBArea, TxStreamArea, and RxStreamArea
monitor the used condition in each Area.
(In the case of the Rx of 1394, the free space of the
above two is monitored and the busy_A, B, X is
controlled by hardware.)
By controlling the above functions from the TRAN &
SBP2 Control Block, a PageTable fetch and data
transfer according to SBP-2 are executable by
hardware.
7.1.2
IEEE1394LINK/Transaction Controller xCSBUF Area (SRAM)
TxHeaderArea
8KBytes
0x400000
0x4000C0
0x4000E0
0x400100
(RxHeaderAreaStart)
RxORBAreaStart
TxHeaderAreaStart
(TxHeaderAreaStart + 0x0040)
TxStreamAreaStart
TxStreamAreaEnd
RxStreamAreaStart
HW_RxHeaderArea
HW_PageTableArea
HW_TxHeaderArea
RxHeaderArea
(RingBuffer)
RxORBArea
(RingBuffer)
TxHeaderArea (2 Headers)
TxORBArea
(RingBuffer)
NotUsed
RxStreamArea
(RingBuffer)
0x401FFF
IDE –> 1394 DMA Area
1394 –> IDE DMA Area
used Asyncronouse only
TxAreaStart
+ 0x20
+ 0x40
AsyTxPktHdr 1
AsyTxPktHdr 0
TxAreaStart
+ 0x20
+ 0x30
+ 0x40
used Isocronouse
IsoTxPktHdr 0
IsoTxPktHdr 1
TxStreamArea
(RingBuffer)
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