參數資料
型號: SAB82525N
廠商: INFINEON TECHNOLOGIES AG
元件分類: 微控制器/微處理器
英文描述: 2 CHANNEL(S), 4M bps, MULTI PROTOCOL CONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數: 106/126頁
文件大?。?/td> 730K
代理商: SAB82525N
Semiconductor Group
80
SAB 82525
SAB 82526
SAF 82525
SAF 82526
8.2 Register Definitions
Receive FIFO (Read) RFIFO (00. . .1F/40. . .5F)
Interrupt Controlled Data Transfer (Interrupt Mode)
selected if DMA bit in XBCH is reset.
Up to 32 bytes of receive data can be read from the RFIFO following an RPF or an RME
interrupt.
RPF Interrupt: Exactly 32 bytes to be read.
RME Interrupt: Number of bytes to be determined by reading the RBCL, RBCH registers.
DMA Controlled Data Transfer (DMA Mode)
selected if DMA bit in XBCH
If the RFIFO contains 32 bytes, the HSCX autonomously requests a block data transfer by
DMA activating the DRQR line as long as the start of the 32nd read cycle. This forces the DMA
controller to continuously perform bus cycles till 32 bytes are transferred from the HSCX to the
system memory, (level triggered, demand transfer mode of DMA controller).
If the RFIFO contains less than 32 bytes (one short frame or the last of a long frame) the HSCX
requests a block data transfer depending on the contents of the RFIFO according to the
following table:
RFIFO
Contents
(Bytes)
DMA
Request
(Bytes)
1, 2, 3
4 - 7
8 - 15
16 - 32
4
8
16
32
Additionally an RME interrupt is issued after the last byte has been transferred.
As a result, the DMA controller may transfer more bytes as actually valid in the current received
frame. The valid byte count must therefore be determined by reading the RBCH, RBCL
registers following the RME interrupt.
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相關代理商/技術參數
參數描述
SAB82525N-V2.1 制造商:Siemens 功能描述:82525N-V2.1
SAB82525NV2.1GHSCX 制造商:Infineon Technologies AG 功能描述:
SAB82525N-V2.1GHSCX 制造商:Infineon Technologies AG 功能描述:
SAB82525NV2.1HSCX 制造商:Rochester Electronics LLC 功能描述:- Bulk
SAB82525NV2.2 功能描述:輸入/輸出控制器接口集成電路 T/E RoHS:否 制造商:Silicon Labs 產品: 輸入/輸出端數量: 工作電源電壓: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-64 封裝:Tray