參數(shù)資料
型號： TDA19977BHV/15/C1
廠商： NXP SEMICONDUCTORS
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP144
封裝： 20 X 20 MM, 1.40 MM HEIGHT, LEAD FREE, PLASTIC, MS-026, SOT612-3, HLQFP-144
文件頁數(shù)： 8/40頁
文件大?。?/td> 181K
代理商： TDA19977BHV/15/C1
TDA19977A_TDA19977B_1
NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 01 — 7 August 2008
16 of 40
NXP Semiconductors
TDA19977A; TDA19977B
Triple input HDMI receiver interface with digital processing
8.24 Power management
The TDA19977A; TDA19977B can use one of three Power-down modes:
level 0: full Power-down mode
level 1: internal EDID memory with I2C-bus serial interface active
level 2: internal EDID memory with I2C-bus serial interface and activity detection
enabled
The user can activate these different modes with pin PD or using I2C-bus registers:
level 0: PD pin is HIGH
level 1: settings dened in the I2C-bus registers
level 2: with settings dened in the I2C-bus registers
8.25 EDID memory management
The TDA19977A; TDA19977B embedded EDID memory can be shared with all HDMI
inputs. The embedded EDID memory shares 253 bytes with the three HDMI inputs. In
addition, three bytes are dedicated to the physical address and checksum for each HDMI
input (see Figure 3). This memory is accessible in parallel by all HDMI inputs. You can
share the EDID memory over zero, one, two or three HDMI input(s) as shown in Figure 4.
The content of embedded volatile EDID memory must be programmed using the I2C-bus
for each power-on of TDA19977A; TDA19977B. The embedded EDID memory remains
accessible on each HDMI input when the TDA19977A; TDA19977B uses a different
low-power mode.
The “physical address” of each HDMI input can be easily changed with the TDA19977A;
TDA19977B without corrupting the integrity of each DDC-bus.
8.25.1 EDID memory shared over all three HDMI inputs
(1) 253 bytes
+ 3 bytes input A
+ 3 bytes input B
+ 3 bytes input C
+ 1 byte address pointer (subPhys@): this indicates the address in each block where the data for
inputs A, B and C will be copied.
Fig 3.
An example of an application with EDID memory shared over all three HDMI
inputs
001aai383
EDID: 253 B
3 B
HDMI
INPUT
I2C-bus
CPU
FLASH(1)
EDID CONTENT
TDA19977
3 B
HDMI
INPUT
3 B
HDMI
INPUT
相關(guān)PDF資料
PDF描述
TDA2003-TA5-T 12 W, 1 CHANNEL, AUDIO AMPLIFIER, SFM5
TDA2003-TB5-T 12 W, 1 CHANNEL, AUDIO AMPLIFIER, ZFM5
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA19978A 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Quad HDMI 1.3a receiver interface with equalizer (HDTV up to 1080p, up to UXGA for PC formats)
TDA19978AHV 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Quad HDMI 1.3a receiver interface with equalizer (HDTV up to 1080p, up to UXGA for PC formats)
TDA19978AHV/15,518 功能描述:視頻 IC IC SMART CARD INTF RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
TDA19978AHV/15,551 制造商:NXP Semiconductors 功能描述:TDA19978AHV/HLQFP144/TRAYBDP//15/C182 - Trays
TDA19978AHV/15,557 功能描述:視頻 IC IC SMART CARD INTF RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
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