![background image](http://html1.mh-extra.com/html/viewsonic/vx900-2/vx900-2_service-manual_1020039041.webp)
!
The gm5120 OSD controller supports both character-mapped and bitmapped modes. A user
programmable palette of 256 true colors (255 colors, + 1 transparent) is available.
In character mapped mode, a maximum of four colors per character are available.
In 8-bit bitmapped mode, any pixel can be assigned any one of 256 user-defined true colors.
In 4-bit bitmapped mode, any pixel can be assigned any one of 16 user-defined true colors
(15 colors plus one transparent).
The gm5120 incorporates an embedded microprocessor, or OCM (On-Chip
Microprocessor).This processor is intended to simplify the gm5120 system software
implementation by providing embedded macro functions such as OSD menu configurations. It is
not intended to replace the system microprocessor.
An arbitration mechanism handles the register access requests from the OCM and the
system. micro.
1.4 LVDS Transmitter
IC500, 501 (SN75LVDS83) FlatLink transmitters contains four 7-bit parallel-load serial-out shift
registers, a
ҏ
c l ock synthesizer, and five low-voltage differential-signaling (LVDS) line drivers in a
single integrated circuit. These functions allow 28 bits of single-ended low-voltage TTL (LVTTL)
data to be synchronously transmitted over five balanced-pair conductors for receipt by a
compatible receiver,
!
4
7
ViewSonic Corporation
Confidential – Do Not Copy
VX900-2
Summary of Contents for VX900-2
Page 58: ...6 Mechanical Assembly 64 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 59: ...65 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 60: ...66 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 61: ...67 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 63: ...69 ViewSonic Corporation Confidential Do Not Copy VX900 2 7 Explode Diagram...
Page 64: ...Sechmatic Daigrams 6 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 65: ...72 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 66: ...73 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 67: ...74 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 68: ...75 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 69: ...76 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 70: ...PCB Layout 77 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 71: ...78 ViewSonic Corporation Confidential Do Not Copy VX900 2...
Page 72: ...79 ViewSonic Corporation Confidential Do Not Copy VX900 2...