EP9312-CBZ Cirrus Logic Inc, EP9312-CBZ Datasheet - Page 283

• 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, 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
• 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

DS785UM1
2. Setup Destination Memory
Address
0x000C
0x0000
0x0004
0x0008
0x0010
0x0014
A. Write the desired values to the SPEL field and the EPEL field in the
B. Write the word-aligned value of the SDRAM address ‘for the beginning of the copy
C. Write the line length value to the LEN field in the
D. Write the value of the WIDTH field to the
EPEL is the ending pixel position within the word that the pixel-copy will end with.
See
16-bits, the value for SPEL is (81 x 16)% 32 = 16 = 0x10 and the value for EPEL is
(105 x 16)% 32 = 16 = 0x10
bit pixels. So, LEN = 6 - 1 = 5 = 0x5.
SPEL is the starting pixel position within the word that the pixel-copy will begin with.
For example, if the image is to be copied to position (81, 105) and the pixel depth is
comprise the first scan line of the source image.
For example,
“DESTPIXELSTRT”
destination’ to the
where LEN is determined by:
specifies the number of 32-bit words, minus 1, that are needed to contain the pixels
that comprise the 1st scan line of the destination image. For an example, please
(1).Find how many pixels occupy a 32-bit word. For example, four 8-bit pixels can
(2).Find the width of the display in pixels. For example, a 640x480 display has a
(3).The line length, LEN, is determined by the stride of the display, that is, how
31
Section
width of 640 pixels.
many 32-bit words are needed to populate the width of the display with pixels.
From steps 1 and 2, 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,
line length is 640 divided by 4 = 160 = 0xA0.
occupy a 32-bit word.
Usually the same LEN value is used in both the
and the
P1
P2
P3
P5
P6
P7
8.5.2.
Table 8-21. Words Needed for Six 24-Bit Pixels
Table 8-21
“SRCLINELENGTH”
“BLKDESTSTRT”
24 23
register.
Copyright 2007 Cirrus Logic
shows that six 32-bit words are needed to contain six 24-
P0
P2
P3
P4
P6
P7
register.
register.
16 15
“BLKDESTWIDTH”
P0
P1
P3
P4
P5
P7
“DESTLINELENGTH”
“DESTLINELENGTH”
8 7
register, where WIDTH
P0
P1
P2
P4
P5
P6
Graphics Accelerator
EP93xx User’s Guide
0
register,
register
8-19
8