EP9302-IQZ Cirrus Logic Inc, EP9302-IQZ Datasheet - Page 751

• Manufacturer Part Number: EP9302-IQZ
• Description: IC ARM9 SOC PROCESSOR 208LQFP
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9302-IQZ

• Core Size: 16/32-Bit
• Core Processor: ARM9
• Speed: 200MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, SPI, UART/USART, USB
• Peripherals: AC'97, DMA, I&sup2:S, LED, MaverickKey, POR, PWM, WDT
• Number Of I /o: 19
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Data Converters: A/D 5x12b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-LQFP
• Controller Family/series: (ARM9)
• No. Of I/o's: 19
• Ram Memory Size: 16MB
• Cpu Speed: 200MHz
• No. Of Timers: 3
• No. Of Pwm Channels: 1
• Digital Ic Case Style: LQFP
• Embedded Interface Type: AC97, I2S, SPI, UART, USB
• Rohs Compliant: Yes
• Processor Series: EP93xx
• Core: ARM920T
• Data Bus Width: 32 bit
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: EDB9302A-Z
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 598-1132 - KIT DEVELOPMENT EP9302 ARM9
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details
• Other names: 598-1253

DS785UM1
25.2.4 Measuring Analog Input with the Touch Screen Controls Disabled
X+
Y+
X-
Y-
The register values for TSDirect can be derived from the switch positions in the diagram. A
“1” in the register bit position indicates that the switch is made or closed. When
TSSetup.S28EN is low, the TSDirect value for 4- or 8-wire touch press detection should be
set to 0x0040_4601. Otherwise, when TSSetup.S28EN is high, the TSDetect value should be
0x1040_4601. And, when TSSetup.S28EN is low, the TSDirect value for 5-wire touch press
detection should be set to 0x0042_0601. Otherwise, when TSSetup.S28EN is high, the
TSDirect value should be 0x1042_0601.
The analog switch array can be used to measure the chip battery voltage, Digital to Analog
Converter feedback, or other miscellaneous analog inputs when the touch screen controller is
disabled.
extra reference lines that are not used for 4-wire or 5-wire touch screens can be read from
the APB bus by temporarily disabling the touch screen controller. Please note that the initial
read should be viewed as a convert command where the data provided is stale and should be
discarded.
4/8 wire detect Press
100K
100K
SW28
Figure 25-8
SW22
SW23
SW19
SW11
SW20
SW13
SW21
SW12
SW14
SW24
SW25
SW26
SW27
SW15
SW16
SW17
SW18
SW0
SW1
SW2
SW3
SW4
SW5
SW6
SW7
Figure 25-7. Power Down Detect Press Switching Diagram
TOUCH_PRESS
VDD
SW10
SW9
A/D CONVERTER
shows the switch configuration for reading these values. Note that any
SW30
SW29
SW8
REF+
REF-
IN
VBAT
DAC
Copyright 2007 Cirrus Logic
Not used
Not used
Not used
Wiper
Z+/-
Z-/+
V+
V-
5 wire detect Press
100K
100K
SW28
SW22
SW23
SW19
SW11
SW20
SW13
SW21
SW12
SW14
SW24
SW25
SW26
SW27
SW15
SW16
SW17
SW18
SW0
SW1
SW2
SW3
SW4
SW5
SW6
SW7
Analog Touch Screen Interface
TOUCH_PRESS
VDD
SW10
SW9
A/D CONVERTER
EP93xx User’s Guide
SW30
SW29
SW8
REF+
REF-
IN
VBAT
DAC
25-13
25