- 您現在的位置：買賣IC網 > PDF目錄98287 > TRF7961RHBT (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQCC32 PDF資料下載
參數資料
| 型號： | TRF7961RHBT |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 封裝： | 5 X 5 MM, GREEN, PLASTIC, QFN-32 |
| 文件頁數： | 30/52頁 |
| 文件大小： | 1023K |
| 代理商： | TRF7961RHBT |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁當前第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁
SLOU186F – AUGUST 2006 – REVISED AUGUST 2010
www.ti.com
5.5
Reader Communication Interface
5.5.1
Introduction
The communication interface to the reader can be configured in two ways: a parallel 8-pin interface and a
Data_Clk or a serial peripheral interface (SPI).
These modes are mutually exclusive; only one mode can be used at a time in the application.
When the SPI interface is selected, the unused I/O_2, I/O_1, and I/O_0 pins must be hard-wired according
to Table 5-30. At power up, the reader samples the status of these three pins. If they are not the same (all
High or all Low) it enters one of the possible SPI modes.
The reader always behaves as the slave while the microcontroller (MCU) behaves as the master device.
The MCU initiates all communications with the reader and is also used to communicate with the higher
levels (application layer). The reader has an IRQ pin to prompt the MCU for attention if the reader detects
a response from the proximity/vicinity integrated circuit card (PICC/VICC).
Communication is initialized by a start condition, which is expected to be followed by an
Address/Command word (Adr/Cmd). The Adr/Cmd word is 8 bits long, and its format is shown in
Table 5-30. Pin Assignment in Parallel and Serial Interface Connection or Direct Mode
Pin
Parallel
Parallel-Direct
SPI with SS
SPI without SS
DATA_
DATA_CLK
DATA_CLK from master
CLK
I/O_7
A/D[7]
MOSI(1) = data-in (reader-in)
MOSI(1) = data-in
(reader-in)
I/O_6
A/D[6]
Direct mode, data out (sub-carrier or bit stream) MISO(2) = data-out (MCU-out)
MISO(2) = data-out
(MCU-out)
I/O_5(3)
A/D[5]
Direct mode, strobe – bit clock out
See Note 3
I/O_4
A/D[4]
SS – slave select(4)
—
I/O_3
A/D[3]
—
I/O_2
A/D[2]
—
at VDD
I/O_1
A/D[1]
—
at VDD
at VSS
I/O_0
A/D[0]
—
at VSS
IRQ
IRQ interrupt
(1)
MOSI – master out, slave in
(2)
MISO – master in, slave out
(3)
IO_5 pin is used only for information when data is put out of the chip (for example, reading 1 byte from the chip). It is necessary first to
write in the address of the register (8 clocks) and then to generate another 8 clocks for reading out the data. The IO_5 pin goes high in
this second 8 clocks. But for normal SPI operation this pin IO_5 is not used.
(4)
Slave-select pin active-low
Table 5-31. Address/Command Word Bit Distribution
Bit
Description
Bit Function
Address
Command
Bit 7
Command control bit
0 = address, 1 = command
0
1
Bit 6
Read/Write
1 = read, 0 = write
R/W
0
Bit 5
Continuous address mode
1 = Cont. mode
R/W
0
Bit 4
Address/Command bit 4
Adr 4
Cmd 4
Bit 3
Address/Command bit 3
Adr 3
Cmd 3
Bit 2
Address/Command bit 2
Adr 2
Cmd 2
Bit 1
Address/Command bit 1
Adr 1
Cmd 1
Bit 0
Address/Command bit 0
Adr 0
Cmd 0
36
System Description
Copyright 2006–2010, Texas Instruments Incorporated
相關PDF資料 |
PDF描述 |
|---|---|
| TS(X)8387MFDSSC/SMD | 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CQFP68 |
| TS(X)8387MF_ | 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CQFP68 |
| TS(X)8387VF_ | 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CQFP68 |
| TS(X)8387VF | 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CQFP68 |
| TS8387MFB/C | 1-CH 8-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, CQFP68 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TRF7961RHBT | 制造商:Texas Instruments 功能描述:RFID Reader IC |
| TRF7961RHBTG4 | 功能描述:RFID應答器 Multi-Standard High Freq RFID Read/Writ RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| TRF7962A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:FULLY INTEGRATED 13.56-MHz RFID READER/WRITER IC FOR ISO15693/ISO18000-3 STANDARDS |
| TRF7962ARHBR | 功能描述:RFID應答器 Fully Integ 13.56MHz RFID R/W IC RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
| TRF7962ARHBT | 功能描述:RFID應答器 Fully Integ 13.56MHz RFID R/W IC RoHS:否 制造商:Murata 存儲容量:512 bit 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體: 封裝:Reel |
發布緊急采購，3分鐘左右您將得到回復。