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型號(hào)：	E5550F-DOW
廠商：	ATMEL CORP
元件分類：	通信及網(wǎng)絡(luò)
英文描述：	SPECIALTY TELECOM CIRCUIT, UUC7
封裝：	DIE-7
文件頁數(shù)：	516/1069頁
文件大?。?/td>	14303K
代理商：	E5550F-DOW

SAM4CP [DATASHEET]

43051E–ATPL–08/14

When the peripheral is about to send data, it sends a Transmit Ready to its PDC transmit channel which then requests

access to the Matrix. When access is granted, the PDC transmit channel reads data from memory and transfers the data

to the Transmit Holding Register (THR) of its associated peripheral. The same peripheral sends data depending on its

28.4.5 PDC Flags and Peripheral Status Register

Each peripheral connected to the PDC sends out receive ready and transmit ready flags and the PDC returns flags to the

peripheral. All these flags are only visible in the Peripheral Status Register.

Depending on whether the peripheral is half- or full-duplex, the flags belong to either one single channel or two different

28.4.5.1 Receive Transfer End

The receive transfer end flag is set when PERIPH_RCR reaches zero and the last data has been transferred to memory.

This flag is reset by writing a non-zero value to PERIPH_RCR or PERIPH_RNCR.

28.4.5.2 Transmit Transfer End

The transmit transfer end flag is set when PERIPH_TCR reaches zero and the last data has been written to the

peripheral THR.

This flag is reset by writing a non-zero value to PERIPH_TCR or PERIPH_TNCR.

28.4.5.3 Receive Buffer Full

The receive buffer full flag is set when PERIPH_RCR reaches zero, with PERIPH_RNCR also set to zero and the last

data transferred to memory.

This flag is reset by writing a non-zero value to PERIPH_TCR or PERIPH_TNCR.

28.4.5.4 Transmit Buffer Empty

The transmit buffer empty flag is set when PERIPH_TCR reaches zero, with PERIPH_TNCR also set to zero and the last

data written to peripheral THR.

This flag is reset by writing a non-zero value to PERIPH_TCR or PERIPH_TNCR.

Peripheral DMA Controller (PDC) User Interface

1. PERIPH: Ten registers are mapped in the peripheral memory space at the same offset. These can be defined by the

user depending on the function and the desired peripheral.

Receive Pointer Register

Receive Counter Register

Transmit Pointer Register

Transmit Counter Register

Receive Next Pointer Register

Receive Next Counter Register

Transmit Next Pointer Register

Transmit Next Counter Register

Transfer Control Register

Transfer Status Register

相關(guān)PDF資料	PDF描述
E5530H-230-S8	SPECIALTY TELECOM CIRCUIT, PDSO8
E5530H-230-DOW	SPECIALTY TELECOM CIRCUIT, UUC
ECM2A5C3A12-29.939MTR	QUARTZ CRYSTAL RESONATOR, 29.939 MHz
ECM2A5C3A32-34.400M	QUARTZ CRYSTAL RESONATOR, 34.4 MHz
ED1702N	NPN general purpose transistor

相關(guān)代理商/技術(shù)參數(shù)	參數(shù)描述
E5550F-S8	制造商:未知廠家制造商全稱:未知廠家功能描述:Transponder
E5551A-DIT	制造商:未知廠家制造商全稱:未知廠家功能描述:Transponder
E5551A-DOW	制造商:未知廠家制造商全稱:未知廠家功能描述:Transponder
E5551A-FP008	制造商:未知廠家制造商全稱:未知廠家功能描述:TRANSPONDER\|CMOS\|SOP\|8PIN\|PLASTIC
E5552	制造商:未知廠家制造商全稱:未知廠家功能描述:Transponder

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