EP9312-CB Cirrus Logic Inc, EP9312-CB Datasheet - Page 278

• 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

8
8-14
Graphics Accelerator
EP93xx User’s Guide
3. Setup DESTLINELENGTH Register
4. Setup DESTPIXELSTRT Register
5. Setup BLKDESTSTRT Register
6. Setup BACKGROUND Register
7. Setup BLOCKMASK Register
8. Setup LINEINC Register
See
“BLKDESTSTRT”
the BG field in the
the color value written to the
if any, will be displayed using the background color.
register.
register:
Write desired values to the EPEL and SPEL fields in the
Write the SDRAM address for the starting pixel of the 1st line to the ADR field in the
If BG = ‘1’ in the
Write the desired foreground color value to the MASK field in the
Write the values determined below to the YINC and XINC fields in the
A. Determine how many pixels occupy a 32-bit word. For example, four 8-bit pixels can
B. Determine the width of the display in pixels. For example, a 640x480 display has a
C. The line length is determined by the ‘stride’ of the display, that is, how many 32-bit
D. Write 0x0000_00A0 to the
if abs(x2 - x1) == abs(y2 -y1)
Write YINC = 0xFFF (4095)
Write XINC = 0xFFF (4095)
if abs(x2 -x1) < abs(y2 - y1)
Write YINC = 0xFFF (4095)
Write XINC = (abs(x2 - x1) / abs(y2 -y1)) * 4095). Round up to the nearest
whole integer value.
if abs(x2 -x1) > abs(y2 - y1)
Write YINC = (abs(y2 - y1) / abs(x2 - x1)) * 4095). Round to the nearest whole
integer value.
Write XINC = 0xFFF (4095)
occupy a 32-bit word.
width of 640 pixels.
words are needed to populate the width of the display with pixels. From steps A and
B, the stride for this example is 640 pixels divided by 4, where 4 is the number of 8-
bit pixels that occupy a word. So, for this example, destination line length is 640
divided by 4 = 160 = 0xA0.
“Pixel End and Start” on page 8-9
“BLOCKCTRL”
register.
“BACKGROUND”
Copyright 2007 Cirrus Logic
“BACKGROUND”
“DESTLINELENGTH”
register, write the desired background color value to
register; if BG = ‘0’ in the
for details.
register is ignored. The ‘off’ pattern bits,
register.
“DESTPIXELSTRT”
“BLOCKCTRL”
“BLOCKMASK”
“LINEINC”
register.
DS785UM1
register,