Industrial Technology Research Institute 00000UHFISTC01 Manual Do Utilizador
User Manual Document
Document Title
Doc. No.
Model Ver. Doc. Ver. Issue Date
Page
Handfree Mini Reader
Module
1.0
ISTC01
1.0
09/14/2009
8 of 10
4.1.3 Hardware User Manual
The HANDFREE MINI READER MODULE connects to the host via a 16
pins header for data, communications and 4-pin header for power. The 3 data lines
are: Ground, Data Transmit (TX) and Data receive (RX) for UART. The
communication header also contains the additional pins which are interfaces for
USB or JTAG. Those pins can be used to provide data to another sensor or
auxiliary board. The power header pins supplying power to the HANDFREE
MINI READER MODULE is 3.3 Volts (and must be low-noise and regulated). A
diagram of the pins are given below.
are: Ground, Data Transmit (TX) and Data receive (RX) for UART. The
communication header also contains the additional pins which are interfaces for
USB or JTAG. Those pins can be used to provide data to another sensor or
auxiliary board. The power header pins supplying power to the HANDFREE
MINI READER MODULE is 3.3 Volts (and must be low-noise and regulated). A
diagram of the pins are given below.
1,2,3,4 => +V
5,6,7,8,12,13 => GND
9 => USB_DM
10 => USB_DP
11 => UART_RX
14 => UART_TX
15 => TDI
16 => nRST
17 => RTCK
18 => TDO
19 => TCK
20 => TMS
5,6,7,8,12,13 => GND
9 => USB_DM
10 => USB_DP
11 => UART_RX
14 => UART_TX
15 => TDI
16 => nRST
17 => RTCK
18 => TDO
19 => TCK
20 => TMS
RF OUT
Fig 4-4. Pin Out for Handfree Mini Reader Module
Fig 4-5. Photograph of Handfree Mini Reader Module
4.1.4 Module Operation
The HANDFREE MINI READER MODULE is a single-antenna reader
module. The backscatter signal is demodulated to baseband through a standard
mixer stage and is filtered and amplified. The baseband signal is then sampled and
processed by a microcontroller.
mixer stage and is filtered and amplified. The baseband signal is then sampled and
processed by a microcontroller.