- 您現在的位置：買賣IC網 > PDF目錄98287 > TRF7961RHBR (TEXAS INSTRUMENTS INC) SPECIALTY CONSUMER CIRCUIT, PQCC32 PDF資料下載
參數資料
| 型號： | TRF7961RHBR |
| 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： | 15/52頁 |
| 文件大小： | 1023K |
| 代理商： | TRF7961RHBR |
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頁當前第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
5.2.4
Direct Mode
Direct mode allows the user to configure the reader in one of two ways. Direct mode 0 (bit 6 = 0, as
defined in ISO control register) allows the user to use only the front-end functions of the reader, bypassing
the protocol implementation in the reader. For transmit functions, the user has direct access to the
transmit modulator through the MOD pin (pin 14). On the receive side, the user has direct access to the
sub-carrier signal (digitized RF envelope signal) on I/O_6 (pin 23).
Direct mode1 (bit 6 = 1, as defined in ISO control register) uses the sub-carrier signal decoder of the
selected protocol (as defined in ISO control register). This means that the receive output is not the
sub-carrier signal but the decoded serial bit stream and bit clock signals. The serial data is available on
I/O_6 (pin 23) and the bit clock is available on I/O_5 (pin 22). The transmit side is identical; the user has
direct control over the RF modulation through the MOD input. This mode is provided so that the user can
implement a protocol that has the same bit coding as one of the protocols implemented in the reader, but
needs a different framing format.
To select direct mode, the user must first choose which direct mode to enter by writing B6 in the ISO
control register. This bit determines if the receive output is the direct sub-carrier signal (B6 = 0) or the
serial data of the selected decoder. If B6 = 1, then the user must also define which protocol should be
used for bit decoding by writing the appropriate setting in the ISO control register.
The reader actually enters the direct mode when B6 (direct) is set to 1 in the chip status control register.
Direct mode starts immediately. The write command should not be terminated with a stop condition (see
communication protocol), because the stop condition terminates the direct mode and clears B6. This is
necessary as the direct mode uses one or two I/O pins (I/O_6, I/O_5). Normal parallel communication is
not possible in direct mode. Sending a stop condition terminates direct mode.
Figure 5-4 shows the different configurations available in direct mode.
In mode 0, the reader is used as an AFE only, and protocol handling is bypassed.
In mode 1, framing is not done, but SOF and EOF are present. This allows for a user-selectable
framing level based on an existing ISO standard.
In mode 2, data is ISO-standard formatted. SOF, EOF, and error checking are removed, so the
microprocessor receives only bytes of raw data via a 12-byte FIFO.
22
System Description
Copyright 2006–2010, Texas Instruments Incorporated
相關PDF資料 |
PDF描述 |
|---|---|
| TRF7961RHBT | SPECIALTY CONSUMER CIRCUIT, PQCC32 |
| 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 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| TRF7961RHBRG4 | 功能描述:RFID應答器 Multi-Standard High Frequency RFID 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 |
| TRF7961RHBT | 功能描述:RFID應答器 Multi-Standard High Freq RFid Reader 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 |
| 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 |
發布緊急采購，3分鐘左右您將得到回復。