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参数资料
型号： MAX7456EVKIT+
厂商： Maxim Integrated Products
文件页数： 30/44页
文件大小： 0K
描述： KIT EVAL FOR MAX7456
产品培训模块： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装： 1
主要目的： 视频，屏幕显示器（OSD）
嵌入式： 是，MCU，16 位
已用 IC / 零件： MAX7456
主要属性： NTSC/PAL 单通道单色屏幕显示器（OSD），带集成视频驱动器
次要属性： GUI，SPI 接口
已供物品： 板
产品目录页面： 1424 (CN2011-ZH PDF)
Single-Channel Monochrome On-Screen
Display with Integrated EEPROM
OSD Black Level Register (OSDBL)
Write address = 6CH, read address = ECH.
Read/write access: This register contains 4 factory-pre-
set bits [3:0] that must not be changed. Therefore,
when changing bit 4, first read this register, modify bit
4, and then write back the updated byte.
BIT
DEFAULT
FUNCTION
7–5
000
Don’t Care
41
OSD Image Black Level Control
This bit enables the alignment of the OSD image black level with the input image black level at
VOUT. Always enable this bit following power-on reset to ensure the correct OSD image brightness.
0 = Enable automatic OSD black level control
1 = Disable automatic OSD black level control
0–3
xxxx
These bits are factory preset. To ensure proper operation of the MAX7456, do not change the
values of these bits.
xxxx = Factory preset—can be any one of the 16 possible values. This value is permanently stored in the MAX7456 and will always
be restored to the factory preset value following power-on reset or hardware reset.
Status Register (STAT)
Read address = AxH.
Read/write access: read only.
BIT
DEFAULT
FUNCTION
7
NA
Don’t Care
6NA
Reset Mode
0 = Clear when power-up reset mode is complete. Occurs 50ms (typ) following stable VDD (Figure 22)
1 = Set when in power-up reset mode
5NA
Character Memory Status
0 = Available to be written to or read from
1 = Unavailable to be written to or read from
4NA
VSYNC Output Level
0 = Active during vertical sync time
1 = Inactive otherwise
3NA
HSYNC Output Level
0 = Active during horizontal sync time
1 = Inactive otherwise
2NA
Loss-of-Sync (LOS)
0 = Sync Active. Asserted after 32 consecutive input video lines.
1 = No Sync. Asserted after 32 consecutive missing input video lines.
1NA
0 = NTSC signal is not detected at VIN
1 = NTSC signal is detected at VIN
0NA
0 = PAL signal is not detected at VIN
1 = PAL signal is detected at VIN
NA = Not applicable.
X = Don’t care.
MAX7456
36
Maxim Integrated
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相关代理商/技术参数
参数描述
MAX7456EVKIT+ 功能描述:显示开发工具 MAX7456 Eval Kit RoHS:否 制造商:4D Systems 产品:4Display Shields 工具用于评估:?OLED-160-G1, ?OLED-160-G2 接口类型:Serial 工作电源电压:5 V
MAX7457ETE 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel
MAX7457ETE+ 功能描述:视频开关 IC Video Switch for Dual SCART Connector RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel
MAX7457ETE+T 功能描述:视频开关 IC Video Switch for Dual SCART Connector RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel
MAX7457ETE-T 功能描述:视频开关 IC RoHS:否 制造商:Texas Instruments 开关数量:4 开启电阻（最大值）:12 Ohms 传播延迟时间: 开启时间（最大值）: 关闭时间（最大值）: 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:WQFN-42 封装:Reel
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