EP9312-CB Cirrus Logic Inc, EP9312-CB Datasheet - Page 188

• 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

7
32 bits per pixel (24 bits per pixel unpacked)
bit 31
bit 31
bit 31
7-6
Raster Engine With Analog/LCD Integrated Timing and Interface
EP93xx User’s Guide
7.3.5 Frame Buffer Memory Size
7.3.6 Pulse Width Modulated Brightness
Pixel 3 Red
Unused
Unused
Unused
Byte 3
Byte 7
Byte B
bit 24 bit 23
bit 24 bit 23
bit 24 bit 23
Several screens may be available for video display depending on screen size, pixel depth,
and amount of memory dedicated to video images. The screen size can be up to 1280 x 1024
pixels, the pixel depth can be 4 bpp, 8 bpp, 16 bpp, 24 bpp packed, or 32 bpp (24 bpp
unpacked).
The circuitry provides a pulse width modulated brightness control output, Bright, that can be
used in conjunction with an external resistor and capacitor to provide a DC voltage level for
Byte 6
Compressed images for remapping
1 bit per pixel
bit 31
Pixel
24
Pixel 3 Green
Pixel 0 Red
Pixel 1 Red
Pixel 2 Red
Byte A
Byte 2
As stored in memory
Byte 3
bit 16 bit 15
bit 16 bit 15
bit 16 bit 15
32-bit Word 0
32-bit Word 1
32-bit Word 2
Table 7-2. Byte Oriented Frame Buffer Organization (Continued)
Pixel 0 Green
Pixel 1 Green
Pixel 2 Green
bit 24 bit 23
Pixel 3 Blue
Pixel
Byte 1
Byte 5
Byte 9
31
Pixel
16
bit 8 bit 7
bit 8 bit 7
bit 8 bit 7
Copyright 2007 Cirrus Logic
Byte 2
Pixel 0 Blue
Pixel 1 Blue
Pixel 2 Blue
Pixel 2 Red
Byte 0
Byte 4
Byte 8
32-bit Word
bit 16 bit 15
Pixel
bit 0
bit 0
bit 0
23
Pixel 8
bit 23
bit 15
bit 7
Word 0
Word 0
Word 0
Pixel 0
Byte 2
Green
Byte 1
Byte 0
Blue
Red
Byte1
In pixel output order (progressive scan)
bit 16 bit 23
bit 8 bit 15
bit 0 bit 7
Pixel
bit 8 bit 7
Word 1
Word 1
Word 1
Pixel 1
Byte 6
Green
Byte 5
Byte 4
15
Blue
Red
Pixel
0
bit 16 bit 23
bit 8 bit 15
bit 0 bit 7
Byte 0
Word 2
Word 2
Word 2
Pixel 2
Byte B
Byte A
Byte 8
Green
Blue
Red
bit 16 bit 23
Pixel
bit 8 bit 15
bit 0 bit 7
bit 0
7
DS785UM1
Word 3
Word 3
Word 3
Pixel 3
Byte E
Byte D
Byte C
Green
Blue
Red
bit 16
bit 8
bit 0