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14.3.9 PIUPBnmREG (0x0B00 02A0 to 0x0B00 02AE, 0x0B00 02BC to 0x0B00 02BE)
Remark
n = 0, 1, m = 0 to 4
PIUPB00REG (0x0B00 02A0)
PIUPB01REG (0x0B00 02A2)
PIUPB02REG (0x0B00 02A4)
PIUPB03REG (0x0B00 02A6)
PIUPB04REG (0x0B00 02BC)
Bit
15
Name
VALID
R/W
R/W
RTCRST
0
Other resets
0
Bit
7
Name
PADDATA7
R/W
R/W
RTCRST
0
Other resets
0
Bit
Name
15
VALID
14 to 10
Reserved
9 to 0
PADDATA(9:0)
These registers are used to store coordinate data or touch pressure data. There are four coordinate data buffers
and one touch pressure data buffer, each of which holds two pages of coordinate data or pressure data, and the
addresses (register addresses) where the coordinate data or the pressure data is stored are fixed. Read coordinate
data or pressure data from the corresponding register in a valid page.
The VALID bit, which indicates whether the data is valid, is automatically rendered invalid when the page buffer
interrupt source (the PADPAGE0INTR or PADPAGE1INTR bit in the PIUINTREG register) is cleared.
Table 14-5 shows correspondences between the sampled data and the register in which the sampled data is
stored.
Z (Touch pressure)
CHAPTER 14 TOUCH PANEL INTERFACE UNIT (PIU)
PIUPB10REG (0x0B00 02A8)
PIUPB11REG (0x0B00 02AA)
PIUPB12REG (0x0B00 02AC)
PIUPB13REG (0x0B00 02AE)
PIUPB14REG (0x0B00 02BE)
14
13
Reserved
Reserved
R
R
0
0
0
0
6
5
PADDATA6
PADDATA5
PADDATA4
R/W
R/W
0
0
0
0
Indicates validity of data in page buffer
1 : Valid
0 : Invalid
0 is returned when read
A/D converter's sampling data
Table 14-5. Detected Data and Page Buffers
Detected data
Page0 Buffer
X−
PIUPB00REG
X+
PIUPB01REG
Y−
PIUPB02REG
Y+
PIUPB03REG
PIUPB04REG
User's Manual U14272EJ3V0UM
12
11
Reserved
Reserved
Reserved
R
R
0
0
0
0
4
3
PADDATA3
PADDATA2
R/W
R/W
0
0
0
0
Function
Page1 Buffer
PIUPB10REG
PIUPB11REG
PIUPB12REG
PIUPB13REG
PIUPB14REG
10
9
PADDATA9
PADDATA8
R
R/W
R/W
0
0
0
0
2
1
PADDATA1
PADDATA0
R/W
R/W
R/W
0
0
0
0
8
0
0
0
0
0
293
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