EP9312-IB Cirrus Logic Inc, EP9312-IB Datasheet - Page 204

• Manufacturer Part Number: EP9312-IB
• Description: IC ARM920T MCU 200MHZ 352-PBGA
• Manufacturer: Cirrus Logic Inc
• Series: EP9r

Specifications of EP9312-IB

• 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: -40°C ~ 85°C
• Package / Case: 352-BGA
• 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: 598-1259

7
7-22
Raster Engine With Analog/LCD Integrated Timing and Interface
EP93xx User’s Guide
Frame
D18
Assuming the 3 bit input pattern that represents this 50% duty cycle grayscale is 0x3 (or
011b), the values in
up-table.
Ctr
Since all patterns must be evaluated against their specific use, no more examples for half
intensity will be offered. Instead, another example will be used to make a walking distortion
more obvious.
Take the example of a one-third luminous intensity grayscale pattern. Assume a 3Hx3Vx3F
matrix for this definition. Wanting the intensity to be evenly distributed and given the three
frame interval, any cell in the matrix should only be active for one frame. The matrix could be
filled in as in
1
Vert
D17
Ctr
1
Horz
D16
Ctr
Figure
1
Figure 7-6. Programming for One-third Luminous Intensity
VCNT (lines)
base + 0x0C
base + 0x2C
base + 0x4C
base + 0x6C
7-6.
Table 7-7
Register
Address
(pixels)
Table 7-7. Programming 50% Duty Cycle Into Lookup Table
HCNT
Frame 0
Frame 2
R
V
E
T
should be used to program this pattern into the grayscale look-
Copyright 2007 Cirrus Logic
1
1
1
1
D
1
5
0
1
1
0
1
1
1
0
D
1
4
1
0
1
0
H O R Z
1
0
0
0
1
0
1
1
0
1
D
1
3
0
1
0
1
0
1
0
0
0
1
1
1
0
0
D
1
2
1
0
0
1
0
0
1
1
0
0
1
0
1
1
D
1
1
1
0
0
1
1
0
1
0
D
1
0
1
0
1
0
1
0
0
1
D
9
0
1
0
1
Frame 1
1
0
0
0
D
8
0
1
1
0
0
1
1
1
D
7
0
1
0
1
0
1
1
0
D
6
1
0
0
1
0
1
0
1
D
5
0
1
1
0
0
0
1
0
1
0
0
D
4
1
0
1
0
1
0
0
0
0
1
1
D
3
0
1
0
1
0
1
0
0
0
1
0
D
2
0
1
1
0
0
0
0
1
D
1
1
0
0
1
0
0
D
0
0
0
1
0
1
0
GrySclLUT
Address *4
Frame
00
01
10
11
DS785UM1
Value
Pixel
011
011
011
011