MAX11811_1009 Datasheet, PDF(12/23 Page) Maxim Integrated Products

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MAX11811 Touch Evaluation System (TEVS)

Configuration register, or by selecting it in the Touch

Data tab, as shown in Figure 8.

Autonomous Mode: Autonomous mode can be

selected in the Registers tab by selecting it in the

Operating Mode Configuration register, or by selecting

it in the Touch Data tab, as shown in Figure 9.

Raw Data

The Raw Data tab (Figure 10) displays a stream of raw

data collected during the operation of the TSC. This data

can be saved for data analysis by pressing the Save

Data button.

Multi-Touch Tab

The Multi-Touch tab (Figures 11, 12, and 13) gives a

simple demo of the multi-touch on a resistive panel. Use

the touch panel to enlarge and reduce the picture found

in this tab. This works only in the autonomous mode.

Contact the factory for details on this feature.

Proximity Sensing Tab

The GUI currently does not support this feature. However,

this feature is available in the TEVS hardware and the

TSC chip fully supports this feature, as described in the

MAX11811 IC data sheet.

Reg. Data Snd/Rcv Tab

The Reg. Data Snd/Rcv tab lets the user send and

receive multiple data to the TSC registers.

Figure 14 shows an example where the first line is writing

0xF1 to register 0x01 (the Activate checkbox must be

checked). The second line reads register 0x01 with what

was written in the first line.

The TSC + Eval. Sys. Response (Hex) box shown

in Figure 14 displays the whole protocol and may be

of interest while debugging only. The 4F 4B 00 is the

response from the TEVS following a successful write and

is the ASCII OK, 5A 00 01 F1 is the response from the

TEVS for a request read, 5A is a sync byte, 00 is reserved,

01 indicates that 1 byte of data is to follow, and F1 is the

(1 byte) data.

The TSC Response ONLY (Hex) box displays the TSC

response only. Since the only relevant information is the

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