參數(shù)資料
型號： TSC2302IRGZRG4
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQCC48
封裝： GREEN, PLASTIC, VQFN-48
文件頁數(shù)： 17/85頁
文件大小： 1483K
代理商： TSC2302IRGZRG4
www.ti.com
TSC2302
SLAS394 – JULY 2003
Register Summary for TSC2302 (continued)
PAGE
ADDR
REGISTER
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
RESET
(HEX)
NAME
VALUE
(HEX)
2
1B
ADCLKCF
0
1
0
PLP
COM
0
0400
G
N
K
2
1C
reserved
1
FFFF
2
1D
reserved
0
0000
2
1E
reserved
0
0000
2
1F
reserved
0
1
0
4000
TSC2302 TOUCH SCREEN CONTROL REGISTERS
This section describes each of the registers shown in the memory map of Figure 49. The registers are grouped
according to the function they control. In the TSC2302, bits in control registers can refer to slightly different
functions depending upon whether you are reading the register or writing to it. A summary of all registers and bit
locations is shown in Table 3.
TSC2302 ADC Control Register (Page 1, Address 00H)
The ADC in the TSC2302 is shared between all the different functions. A control register determines which input
is selected, as well as other options. The result of the conversion is placed in one of the result registers in Page
0 of memory, depending upon the function selected.
The ADC control register controls several aspects of the ADC. The register is formatted as follows:
BIT 15
BIT 14
BIT 13
BIT 12
BIT 11
BIT 10
BIT 9
BIT 8
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
MSB
LSB
PSM
STS
AD3
AD2
AD1
AD0
RS1
RS0
AV1
AV0
CL1
CL0
PV2
PV1
PV0
X
Bit 15 — PSM
Pen Status/Control Mode. Reading this bit allows the host to determine if the screen is touched. Writing to this bit
determines the mode used to read coordinates: host controlled or under control of the TSC2302 responding to a
screen touch. When reading, the PENSTS bit indicates if the pen is down or not. When writing to this register,
this bit determines if the TSC2302 controls the reading of coordinates, or if the coordinate conversions are
host-controlled. The default state is host-controlled conversions (0).
Table 4. PSM Bit Operation
PSM
READ/WRITE
VALUE
DESCRIPTION
Read
0
No screen touch detected (default)
Read
1
Screen touch detected
Write
0
Conversions controlled by host
Write
1
Conversions controlled by TSC2302
Bit 14 — STS
ADC Status. Reading this bit indicates if the converter is busy. Writing a 0 to this bit causes the touch screen
scans to continue until either the pen is lifted or the process is stopped. Continuous scans or conversions can be
stopped by writing a 1 to this bit. This immediately halts a conversion (even if the pen is still down) and causes
the ADC to power down. The default state is continuous conversions, but if this bit is read after a reset or
power-up, it reads 1.
24
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