EP9312-CBZ Cirrus Logic Inc, EP9312-CBZ Datasheet - Page 754
![IC ARM9 SOC UNIVERSAL 352PBGA](/photos/12/23/122390/mfg_ep9312_series_sml.jpg)
EP9312-CBZ
Manufacturer Part Number
EP9312-CBZ
Description
IC ARM9 SOC UNIVERSAL 352PBGA
Manufacturer
Cirrus Logic Inc
Series
EP9r
Specifications of EP9312-CBZ
Core Size
16/32-Bit
Core Processor
ARM9
Speed
200MHz
Connectivity
EBI/EMI, EIDE, Ethernet, I²C, IrDA, Keypad/Touchscreen, SPI, UART/USART, USB
Peripherals
AC'97, DMA, I²: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
Package / Case
352-BGA
Controller Family/series
(ARM9)
No. Of I/o's
16
Ram Memory Size
16MB
Cpu Speed
200MHz
No. Of Timers
4
No. Of Pwm Channels
2
Digital Ic Case Style
BGA
Embedded Interface Type
AC97, I2S, SPI, UART, USB
Rohs Compliant
Yes
Processor Series
EP93xx
Core
ARM920T
Data Bus Width
32 bit
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
Details
Other names
598-1258
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25
25-16
Analog Touch Screen Interface
EP93xx User’s Guide
25.2.6 Polled and Interrupt-Driven Modes
25.2.7 Touch Screen Package Dependency
The ADC provides support for synchronous sampling, in both polled mode and interrupt-
driven mode. In either mode, the touch screen scanning state machine should be disabled by
setting bit 15 of the TSSetup register to zero.
The ADC decimation filter conversion value appears in the TSXYResult register. With the
touch screen scanning state machine disabled, bit 31 of this register is the SDR, or
Synchronous Data Ready, bit. This bit is set when a new valid conversion value appears in
this register, and is cleared when this register is read. Hence, in polled mode, the
TSXYResult register may be read repeatedly. If two consecutive reads show the bit clear and
then set, the second read has a new valid value.
Conversion data may also be processed using interrupts from this module. If bit 11 in the
TSSetup2 register (the RINTEN bit) is set, an interrupt occurs whenever the SDR bit in the
TSXYResult register is set. Therefore, an interrupt handler can read the TSXYResult register
whenever a new valid sample appears in the register, which both returns a new conversion
value and clears the interrupt.
The Touch block uses the following external pins
ADC_GND
DAC_VDD
ADC_VDD
Signals
sXm
sYm
sXp
sYp
Xm
Ym
Xp
Yp
Touch Screen ADC power, nominal 3.3V. This supply is internally diode connected to the
Table 25-3. External Signal Functions
DAC_VDD supply to provide additional ESD protection.
Touch Screen ADC X axis voltage feedback inputs.
Touch Screen ADC Y axis voltage feedback inputs.
Should be connected to ADC_VDD on the board.
Should be connected to DAC_VDD on the board.
Copyright 2007 Cirrus Logic
Touch Screen ADC X axis analog bias output.
Touch Screen ADC Y axis analog bias output.
Touch Screen ADC ground
Function
DS785UM1
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