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参数资料
| 型号： | TSC2300IPAGRG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | GREEN, PLASTIC, TQFP-64 |
| 文件页数： | 19/83页 |
| 文件大小： | 1268K |
| 代理商： | TSC2300IPAGRG4 |
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TSC2300
SLAS372 — NOVEMBER 2002
TSC2300 TOUCH SCREEN CONTROL REGISTERS
This section describes each of the registers shown in the memory map of Figure 54. The registers are grouped
according to the function they control. Note that in the TSC2300, bits in control registers may refer to slightly different
functions depending upon if you are reading the register or writing to it. A summary of all registers and bit locations is
shown in Table 5.
TSC2300 A/D Converter Control Register (Page 1, Address 00H)
The A/D converter in the TSC2300 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 A/D Converter Control Register controls several aspects of the A/D converter. 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 TSC2300 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 TSC2300 controls the reading of coordinates, or if the coordinate conversions are host-controlled.
The default state is host-controlled conversions (0).
Table 6. 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 TSC2300
Bit 14 — STS
A/D 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 A/D to power
down. The default state is continuous conversions, but if this bit is read after a reset or power-up, it reads 1.
Table 7. STS Bit Operation
STS
READ/WRITE
VALUE
DESCRIPTION
Read
0
Converter is busy
Read
1
Converter is not busy (default)
Write
0
Normal operation
Write
1
Stop conversion and power down
26
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