EP9312-CB Cirrus Logic Inc, EP9312-CB Datasheet - Page 752

• Manufacturer Part Number: EP9312-CB
• Description: System-on-Chip Processor
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9312-CB

• Peak Reflow Compatible (260 C): No
• A/d Converter: 12 Bits
• Leaded Process Compatible: No
• No. Of I/o Pins: 65
• Package / Case: 352-BGA
• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, EIDE, Ethernet, I²C, IrDA, Keypad/Touchscreen, SPI, UART/USART, USB
• Peripherals: AC'97, DMA, I&sup2:S, LCD, LED, MaverickKey, POR, PWM, WDT
• Number Of I /o: 16
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 3.6 V
• Data Converters: A/D 8x12b
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Processor Series: EP93xx
• Core: ARM920T
• Data Bus Width: 32 bit
• 3rd Party Development Tools: MDK-ARM, RL-ARM, ULINK2
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: No
• Other names: 598-1257

25
25-14
Analog Touch Screen Interface
EP93xx User’s Guide
Used
Used
Not
Not
The register values for TSDirect can be derived from the switch positions shown in
8. A “1” in the register bit position indicates that the switch is made or closed. Therefore, the
TSDirect value for battery sampling should be set to 0x4000_0700, the TSDirect value for the
measuring the DAC feedback example should be set to 0x2000_0600, and the TSDirect
value for measuring a miscellaneous input example should be set to 0x0000_0601.
To use the miscellaneous measurement input, TSDIRECT should be set to 0x0000_0601 and
the input should be on Xp pin. By using this configuration, we can measure the FULL range,
from 0 to 3.3 V. Also, to use this function we need to configure 2 items in Syscon:
• Enable the Clock for the Touch Screen (KTDIV register in Syscon)
• Set the TIN bit in DeviceCfg in Syscon. This sets the Touch Screen controller to an
100K
100K
SW28
inactive state.
SAMPLE VBAT
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
TOUCH_PRESS
VDD
SW10
SW9
A/D CONVERTER
SW30
SW29
SW8
REF+
REF-
IN
VBAT
DAC
Used
Figure 25-8. Other Switching Diagrams
Used
Not
Not
Copyright 2007 Cirrus Logic
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
Test DAC
TOUCH_PRESS
VDD
SW10
SW9
A/D CONVERTER
SW30
SW29
SW8
REF+
REF-
IN
VBAT
DAC
Used
Not
Used
Not
IN
Measure Other Misc Input
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
TOUCH_PRESS
VDD
SW10
SW9
A/D CONVERTER
SW30
SW29
SW8
REF+
REF-
IN
VBAT
Figure 25-
DAC
DS785UM1