User's Manual

ACR122L-ACS Design Specification
Version 0.03 19/05/2010
Page
37
of
50
ACR122L
-
ACS
5.10. Pseudo APDU for Scrolling LCD Current Display
This APDU is used to set scrolling feature of the Current LCD Display
Table 10.0A: Scrolling LCD Command Format (5 Bytes + LCD Message Length)
Command Class INS P1 P2 Lc Data In
(6 Bytes)
LCD Display 0xFF 0x00 0x6D 0x00
0x06 Scroll Ctrl
Data In: Scroll Ctrl
Table 10.0B: Scrolling Control Format (6 Bytes)
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5
X Position Y Position Scrolling Range
(Horizontal)
Scrolling Range
(Vertical)
Refresh Speed
Ctrl
Scrolling
Direction
X Position: Horizontal Start Up Position, Ref to LCD Display Position Below
Y Position: Vertical Start Up Position, Ref to LCD Display Position Below
LCD Display Position (Total LCD Size: 128x32):
Byte 0x00 (X = 0x00) Byte 0x01 (X = 0x01) … Byte 0x0F (X = 0x0F)
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0 … 7 6 5 4 3 2 1 0
0x00
0x01
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
… …
0x1F
Scrolling Range (Horizontal): How many 8 pixels in Horizontal after X position will be scrolled
Scrolling Range (vertical): How many pixels in Vertical after Y position will be scrolled
Refresh Speed Ctrl:
Bit0~Bit3 – how many pixel move pre scrolling
Bit4~Bit7 – Scrolling period
Bit7 Bit6 Bit5 Bit4 Scrolling period
0 0 0 0 1 Unit
0 0 0 1 3 Units
0 0 1 0 5 Units
0 0 1 1 7 Units
0 1 0 0 17 Units