TC65 TERMINAL SIEMENS, TC65 TERMINAL Datasheet - Page 34

• Manufacturer Part Number: TC65 TERMINAL
• Description: GSM/GPRS JAVA TERMINAL PACK
• Manufacturer: SIEMENS

Specifications of TC65 TERMINAL

• Rohs Compliant: YES

3.10.4
The SPI interface is located on the IO interface connector of the TC65 Terminal.
The SPI (Serial Peripheral Interface) is a synchronous serial interface for controlling and data transfer
between the TC65 Terminal and a connected application. Only one application can be connected to
the Terminal’s SPI.
The SPI consists of four lines. These are the two data lines SPIDI/SPIDO, the clock line SPICLK and
the chip select line SPICS.
The TC65 Terminal acts as a single master device, e.g. the clock SPICLK is driven by the TC65
Terminal. Whenever the SPICS pin is in a low state, the SPI bus is activated and data can be
transferred from the Terminal and vice versa. The SPI interface uses two independent lines for data
input (SPIDI) and data output (SPIDO). The interface supports transmission rates up to 6.5Mbit/s.
Transfer rates >1.083Mbps and a length of the cable >150mm are not recommended.
The SPI interface is only available if the pins 1 and 2 of the IO interface connector are not used as I
interface.
Table 8: SPI interface – signal description
The SPI Interface can be used in 4 different modes.
Table 9 : SPI Timing diagram
TC65 Terminal_HD_V01.041
TC65 Terminal Hardware Interface Description
Strictly Confidential / Released
Signal name
SPICS
SPIDI
I2CDAT_SPIDO
I2CCLK_SPICLK
SPIDI
SPIDI
SPICS
SPIDO
SPICS
SPIDO
SPICLK
SPICLK
SPI Interface
Sample
Sample
Pin
13
14
1
2
SPI MODE 2
SPI MODE 0
Description
Chip select – selects and activates the external device via a low signal.
Data in – serial data input line (from the external device to the TC65
Terminal)
Data out – serial data output line (from the TC65 Terminal to the
external device)
Serial clock line
Clock phase
Page 34 of 58
SPIDI
SPIDI
SPIDO
SPIDO
SPICS
SPICLK
SPICS
SPICLK
Sample
Sample
SPI MODE 3
SPI MODE 1
s
29.09.2005
2
C