User's Manual

ACR122L
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USB
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ACS
Command Class INS P1 P2 Lc
LCD Contrast
Control
0xFF 0x00 0x6C Contrast Control 0x00
P2: Contrast Control
The value range is between 0x00 to 0x0F. It is as large as brighten on contrast. Otherwise the contrast will
been darken.
Data Out: SW1 SW2.
Table 13.0B: Status Code
Results SW1 SW2 Meaning
Success 90 00 The operation is completed successfully.
Error 63 00 The operation is failed.
6.4.17. Escape APDU for LCD Backlight Control
This APDU is used to Control the LCD Backlight
Table 14.0A: LCD Backlight Control Command Format (5 Bytes)
Command Class INS P1 P2 Lc
LCD Backlight
Control
0xFF 0x00 0x64 Backlight
Control
0x00
P2: Backlight Control
Table 14.0B: Backlight Control Format (1 Byte)
CMD Description
0x00 LCD Backlight Off
0xFF LCD Backlight On
Data Out: SW1 SW2.
Table 14.0C: Status Code
Results SW1 SW2 Meaning
Success 90 00 The operation is completed successfully.
Error 63 00 The operation is failed.