EP9312-CBZ Cirrus Logic Inc, EP9312-CBZ Datasheet - Page 269
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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DS785UM1
8.4.1 Memory Organization for 1 Bit Per Pixel (bpp)
8.4.2 Memory Organization for 4-Bits Per Pixel
8.4.3 Memory Organization for 8-Bits Per Pixel
The 1 bpp storage format is for storing compressed image data for remapping only. This data
cannot be displayed until it is remapped into a supported color depth.
compressed 1 bpp images are stored in memory as 8 pixels per byte.
The 4 bpp storage format can be used to support monochrome, 8 levels of grayscale, and 8
or 16 color displays. The actual frame buffer can be organized as 2 pixels per byte or 1 pixel
per byte. The Graphics Accelerator engine treats 4 bpp with 1 pixel per byte as 8 bpp mode.
Table 8-3
The 8 bpp storage format can be used to support 8 level grayscale and color displays. For
color displays, this mode would use a software changeable palette in the Raster Engine to
map 256 color selections to 24-bit colors.
memory as 1 pixel per byte.
0x0000
0x0004
0x0008
0x0000
0x0004
0x0008
0x0000
0x0004
shows how 4 bpp images are stored in memory as 2 pixels per byte.
31
31
P(7,3)....... ......P(0,3) P(7,2)....... ......P(0,2) P(7,1)....... ......P(0,1) P(7,0)....... ......P(0,0)
X
P(6,0)
P(6,1)
P(6,2)
P(6,3)
P(6,4)
P(6,5)
28 27
P(7,0)
P(7,1)
P(7,2)
P(7,3)
P(7,4)
P(7,5)
Table 8-3. 4 bpp Memory Organization
Table 8-2. bpp Memory Organization
24 23
X X
24 23
Copyright 2007 Cirrus Logic
P(4,0)
P(4,1)
P(4,2)
P(4,3)
P(4,4)
P(4,5)
20 19
Table 8-4
P(5,0)
P(5,1)
P(5,2)
P(5,3)
P(5,4)
P(5,5)
16 15
X P(7,5)....... ......P(0,5) P(7,4)....... ......P(0,4)
16 15
P(2,0)
P(2,1)
P(2,2)
P(2,3)
P(2,4)
P(2,5)
shows how 8 bpp images are stored in
12 11
P(3,0)
P(3,1)
P(3,2)
P(3,3)
P(3,4)
P(3,5)
8 7
8 7
P(0,0)
P(0,1)
P(0,2)
P(0,3)
P(0,4)
P(0,5)
Table 8-2
4 3
Graphics Accelerator
EP93xx User’s Guide
P(1,0)
P(1,1)
P(1,2)
P(1,3)
P(1,4)
P(1,5)
shows how
0
0
8-5
8
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