参数资料
| 型号： | CC-ACC-ADD-2443 |
| 厂商： | Digi International |
| 文件页数： | 37/148页 |
| 文件大小： | 0K |
| 描述： | BRD AUDIO ADD-0N CC 2443 KIT |
| 标准包装： | 1 |
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Chapter 1
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Separate X/Y position conversion mode
Auto (Sequential) X/Y position conversion mode
Waiting for interrupt mode
Touch screen
interface modes
1. Normal conversion mode
Single Conversion Mode is used for General Purpose ADC Conversion. This mode can
be activated by:
1
2
Set the ADCCON (ADC Control Register), and
Set the read and write to the ADCDAT0 (ADC Data Register 0).
2. Separate X/Y position conversion mode is activated as follows:
1
2
X-Position Mode writes X-Position Conversion Data to ADCDAT0, so Touch
Screen Interface generates the Interrupt source to Interrupt Controller.
Y-Position Mode writes Y-Position Conversion Data to ADCDAT1, so Touch
Screen Interface generates the Interrupt source to Interrupt Controller.
3. Auto (Sequential) X/Y Position Conversion Mode is activated as follows:
1
2
Touch Screen Controller sequentially converts the X-Position or Y-Position
that is touched.
After touch controller writes X-measurement data to ADCDAT0 and writes
Y-measurement data to ADCDAT1, the Touch Screen Interface generates
Interrupt source to Interrupt Controller in Auto Position Conversion Mode.
4. Waiting for Interrupt Mode is activated as follows:
1
2
The Touch Screen Controller generates an interrupt (INT_TC) signal when
the stylus is down. Waiting for Interrupt Mode setting value is
rADCTSC=0xd3; // XP_PU, XP_Dis, XM_Dis, YP_Dis, YM_En.
After the Touch Screen Controller generates interrupt signal (INT_TC), the
user must wait for the interrupt mode to be cleared (XY_PST sets to the No
operation Mode).
5. Standby Mode
Standby Mode is activated when ADCCON [2] is set to '1.'
In this mode, A/D conversion operation is halted and ADCDAT0, ADCDAT1 register
contains the previous converted data.
Reset controller
On the module there is an Analog Devices ADM811SARTZ used. This device monitors
3.3V and has RSTIN# as debounced manual reset input and through a series resistor of
470R produces PWRGOOD as output. The voltage threshold is 2.93V. Reset output
length is typically 240ms.
37
ConnectCore 9M 2443 & Wi-9M 2443 Hardware Reference
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