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參數(shù)資料
| 型號： | TVP3010C |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Video Interface Palette |
| 中文描述： | 視頻接口面板 |
| 文件頁數(shù)： | 50/90頁 |
| 文件大小： | 491K |
| 代理商： | TVP3010C |
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2–34
Table 2–17. Sense-Test Register (see Notes 19 and 20)
STR BITS
D7
D6
D5
D4
D3
D2
D1
D0
Data
0
0
0
0
0
R
G
B
where:
R = 1 if IOR > 350 mV
G = 1 if IOG > 350 mV
B = 1 if IOB > 350 mV
NOTES: 19. D7 can be set to a 1 to disable the sense-comparison
function. At reset, the sense comparison is enabled
(D7 = 0). D6–D3 are reserved. When the sense-test
register is written to disable the sense comparator
function, bits D6–D0 need to be reset to 0.
20. Both the SENSE output and the sense-test register are
latched by the falling edge of the internally sampled Blank
signal (SYSBL or VGABL depending on mode). In order to
have stable voltage inputs to the comparators, the
frame-buffer inputs should be set up such that data
entering the DACs remains unchanged for a sufficient
period of time prior to and after the Blank signal falling
edge.
D6–D3 are reserved
D7 is a disabled (1) bit
2.9.3
An ID register with a hardwired code is provided that can be used as a software verification for different
versions of the system design. The ID code in the TVP3010 palette is static and may be read without
consideration to the dot clock or video signals. The ID code is read through the indirect register-map
(see Table 2–2). The value defined for the palette is 10 (hex).
2.10 MUXOUT [SENSE]Output
The MUXOUT [SENSE] terminal can be configured as MUXOUT or SENSE by programming bit 3 of the
configuration register (see subsection 2.16.1). When the terminal is configured as MUXOUT, it can be used
to control external devices. MUXOUT is a TTL-compatible output that is software programmable by writing
configuration bit 2 through the VIP microinterface. Its typical application is to control an external multiplexer,
selecting between the VGA pass-through and normal-mode horizontal-sync and vertical-sync signals
supplied on the HSYNC and VSYNC inputs. This output is driven low at reset or when the VGA pass-through
mode is selected. At any other time, it can be programmed to the desired polarity using the configuration
register. The reset default is MUXOUT (see subsection 2.9.2 for the detailed description of SENSE).
2.11 Reset
There are two ways to reset the TVP3010C or TVP3010M palette:
Identification Code (ID) Register
Power-on reset
Software reset
The default-register settings are detailed in Tables 2–1 and 2–2.
2.11.1
There is a power-on reset (POR) circuit built into the 32-bit VIP. This POR operates at power on only. Even
though this circuitry is provided, it is still recommended to utilize the software reset function as described
in subsection 2.11.2 after the power supply has stabilized to ensure the reset condition. All registers reset
to VGA default settings.
Power-On Reset
2.11.2
When data is written to the reset register [FF (hex) on the indirect register map], all other registers are
initialized to VGA default settings accordingly. Any data may be written into the reset register to cause this
reset to occur.
Software Reset
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TVP3010M | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette |
| TVP3020 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette |
| TVP3020-135MDN | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TVP3020-135PCE | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TVP3020-175MDN | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Video Interface Palette |
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