PM-1075 [ZORAN]
Precision Digital Modulator; 精密数字调制器
| 型号： | PM-1075 |
| 厂家： | 
ZORAN CORPORATION |
| 描述： | Precision Digital Modulator |
| 文件： | 总2页 (文件大小：66K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Driving the Digital Lifestyle
PM-1075
Precision Digital Modulator
Imaging
Software
Processors
Quatro SOCs
Solutions
Zoran Corporation
1390 Kifer Road
Sunnyvale, CA 94086-5305
www.zoran.com
Product Brief
The PM-1075 Precision Digital Modulator provides state-of-the-art laser modulation for high-quality, high-speed color and
monochrome laser printer systems, multifunction peripherals (MFPs) and digital copiers.
Benefits
Key Features
• Precision modulator for laser printers/copiers and MFPs
• 10-bit pulse width precision; 1024 linearized width choices
• True 7-bit pulse position precision; up to 128 position choices
• Automatic start-of-scan-line synchronization to within 1/256th
of a pixel
• Adjustable, precision video pulse placement for superior edge
photo reproduction and enhancement
• Internal look-up tables (LUT) compensate for operating
characteristics of the printer device
• Proprietary pulse position and pulse width modulation technology
• Internal beam–detect synchronization eliminates line-to-line jitter
• All-digital design–no alignment or calibration required
• Margin control
• Supports five data modes
• Seamless pixel joining–zero dead space
• Supports any engine resolution
• No modulator calibration required–inherently linear, all-digital
design
• 8-bit parallel or 2-wire serial CPU Interface
• Supports a "No CPU" mode
• 1x Clock = Data Clock = Video Rate
• Maximum video rate: 75 MHz
Description
PM-1075 Sets a New Standard
Beam Detect (BD) Synchronization
The PM-1075 is unique in two ways: 1) it modulates both pulse width
and pulse position, and 2) it can operate with or without a CPU
enabling easy integration into an analog modulator replacement
environment or be fully utilized with its expanded feature set.
Proprietary core technologies in sub-pixel modulation give virtually
unlimited flexibility in the driving of laser beams to achieve the
highest quality color and monochrome text, line-art and photographic
images. The sub-pixel modulator precisely controls laser beam size
and position, enabling very high resolutions. The high speed and low
cost of the PM-1075 make it ideal for use across product lines, with
no compromise in performance.
Start-of-scan (Line Sync) is automatically synchronized to the print
engine beam detect signal (BD). The modulator uses BD to phase
adjust the video cell boundaries to the start of each line within
1/256th of a video clock period, eliminating line-to-line jitter.
Data Modes and Look-up Tables
The PM-1075 supports up to 12 input bits to describe the pulse width
and position within each clock period. Multiple data format options
and 2 internal look-up tables (LUT) provide exceptional user
flexibility. In the default mode, the LUTs are bypassed, with inputs
defined as 10 bits of width information and 2 bits selecting the
position (left, center, right, or reversed center). In this mode no CPU
is required to operate the chip.
Precision Video Pulse Placement
The PM-1075 Precision Digital Modulator allows designers to adjust
the pulse width, position and polarity in each pixel cell of the image,
enabling superior edge and photo reproduction and enhancement.
The PM-1075 controls video pulse width from 0-100% of a pixel clock
period with 10-bit precision. In a high-precision mode, 1024 pulse
widths can be obtained when the calibration look-up table (LUT) is
bypassed. The precision modulator can position a pulse with 7-bit
precision within a pixel period. In addition the polarity of any pulse
can be inverted.
The PM-1075 supports multiple data mode configurations (see chart
on back page). In these modes, input data is translated through the
PM-1075's internal LUTs, which translate incoming data to width and
position values that optimize video output to the specific engine/toner
system and/or user-desired operating characteristics. The Pulse
Width LUT has 256 10-bit values translating up to 8 bits of pulse
width into 10 bits. The Pulse Position LUT has 256 8-bit values which
describe the pulse position (7 bits) and polarity (1 bit) based on up to
8 position inputs. Naturally, the PM-1075 will support fewer bits in
any mode (i.e. 6/2-bit data in the 8/4-bit mode). The LUTs allow the
maximum resolution of the modulator to be used with minimal data
based on the system requirements.
01/06-MMCP
Imaging-PM-1075-PB-1.2
Driving the Digital Lifestyle
PM-1075
Precision Digital Modulator
Product Brief
Descriptions (continued)
Margin Control
PULSE DATA MODES SUPPORTED
Once initialized by the printer controller, the PM-1075 can provide
both horizontal and vertical margins using the following registers:
left margin, line length, top margin and number of lines. With margin
control enabled, the PM-1075 will provide data clock for just the
printable area. When margin control is disabled or used in the "No
CPU" mode margins must be embedded in the source data.
*
pulses are centered
10 width / 2 position
8 width / 4 position
6 width / 6 position
4 width / 8 position
10 width / 0 position
10 width / 0 position
10/2 bit
8/4 bit
** pulses alternate
left/right
6/6 bit
4/8 bit
10/0 bit CTR*
10/0 bit LR**
Seamless Pixel Joining
Because of the PM-1075's all-digital design and unique digital
addressing of transition edges, pixel joining is totally seamless.
There is no "recovery" time or "dead zones" between pixels.
No External Components
"No CPU" Mode
The PM-1075 features an all-digital modulator, requiring no external
components such as delay lines, beam detect synchronization logic,
external SRAM, etc. The output of the modulator directly feeds the
laser diode driver.
When the PM-1075 is reset, it automatically enters a "no CPU"
mode. All LUTs are bypassed, so that no CPU interface is required.
When reset, the pulse mode is 10/2, where up to 10 width and 2
position bits are supplied. The 2-bit position data is internally hard
coded, enabling 4 pulse position choices: left justified, center
positive, center inverse and right justified.
No Modulator Chip Calibration
Due to its all-digital design, the PM-1075 is inherently linear; no
alignment or calibration of the modulator chip is necessary, as is the
case with many analog modulators. The PM-1075 operates at full
specification without any tuning of any components.
All-Digital Design
The PM-1075 Precision Modulator technology is a proven design
implemented in standard CMOS technology. Because of its unique
design, the modulator does not require any high-speed, multiple
clock frequencies; its input clock frequency equals the video
frequency.
Parallel or Serial CPU Interface
The PM-1075 supports either 8-bit parallel or 2-wire serial data, for
greater CPU interface flexibility.
Electrical Specifications
• 3.3 Volt supply voltage
• 5 Volt tolerant I/O (TTL-compatible I/O)
• 75 MHz maximum video rate
• Available in 52-pin Metric Plastic Quad Flatpack
PM-1075 Block Diagram
Clock
Look-up
Table
(LUT)
Pulse Width/2
Video
Latch
Transition
Calculation
High Speed
Oscillator
Pulse Position/2
Look-up
Table
(LUT)
SRAM Access
Line Sync
Beam Detect
Hsync
Margin
Control
Fsync
Requires CPU
Interface
© Copyright 1999-2006 Zoran Corporation. All rights reserved. Zoran and the Zoran logo are trademarks of Zoran Corporation. All other names used are owned by their respective owners. Zoran Corporation makes no guarantee concerning the
accuracy of the information contained herein and further does not guarantee that the use of such information will not infringe the rights of any third party. Zoran will not be responsible for any loss or damage of whatever nature resulting from the
use of, or reliance upon, the information. Zoran reserves the right to make changes in the product and/or specifications presented herein at any time without notice.
Zoran Corporation
www.zoran.com
imaging.usa@zoran.com
•
imaging.japan@zoran.com
•
imaging.taiwan@zoran.com
•
imaging.korea@zoran.com
01/06-MMCP
Imaging-PM-1075-PB-1.2
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