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TDA19978AHV 数据表(PDF) 9 Page - NXP Semiconductors

部件名 TDA19978AHV
功能描述  Quad HDMI 1.3a receiver interface with equalizer (HDTV up to 1080p, up to UXGA for PC formats)
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制造商  NXP [NXP Semiconductors]
网页  http://www.nxp.com
标志 NXP - NXP Semiconductors

TDA19978AHV 数据表(HTML) 9 Page - NXP Semiconductors

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TDA19978A_3
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 03 — 16 April 2010
9 of 38
NXP Semiconductors
TDA19978A
Quad HDMI 1.3a receiver with digital processing
[1]
P = power supply; G = ground; I = input; O = output and I/O = input/output.
[2]
Connected to the ground of the HDMI receiver (VSSH) in normal operation.
8.
Functional description
The TDA19978A converts digital data streams input by the HDMI sources into parallel
digital data for use by media and video signal processing integrated circuits in devices for
HDTV. Data streams can be decoded with or without HDCP protection.
Outputs from the TDA19978A can be RGB 4:4:4, YCbCr 4:4:4, YCbCr 4:2:2 semi-planar
format based on the ITU-R BT.601 standard or YCbCr 4:2:2 based on the ITU-R BT.656
format. Inputs can be both progressive and interlaced formats. The TDA19978A
comprises a color space conversion block, downsampling filters and an embedded timing
code function. In addition, the HDCP repeater function enables other HDMI devices to be
connected to form an extended “total application”.
8.1 Software Drivers
Software drivers are provided for easy configuration and use of the TDA19978A. These
drivers can be integrated with a large range of processors, with or without an operating
system. They control activity detection, input selection, video mode identification, color
conversion, Power-down modes, HDCP and InfoFrame notification.
8.2 HDMI inputs
Control of the four HDMI inputs can be automatic using activity detection or using the
I2C-bus. The HDMI receiver inputs are defined by pins RXx0+, RXx0
−, RXx1+, RXx1−,
RXx2+, RXx2
−, RXxC+, RXxC−, RRXx, HSCLx and HSDAx. In the pin names, x equals A,
B, C or D (as applicable).
8.3 Termination resistance control
The HDMI receiver input contains a termination resistance control set by an external
resistor connected between pins RRXx and VDDH(3V3). In RRXx, x equals 1 for inputs A
and B or 2 for inputs C and D. Typically, the characteristic impedance is 50
Ω and the
default value of the external terminal control resistor is 12 k
Ω ± 1 %.
VSSH
135
G
HDMI receiver ground
VDDC(1V8)
136
P
digital core supply voltage; 1.8 V
VDDC(1V8)
137
P
digital core supply voltage; 1.8 V
HSDAC
138
I/O
HDMI input/output C HDCP DDC-bus serial data
HSCLC
139
I
HDMI input C HDCP DDC-bus serial clock
HSDAD
140
I/O
HDMI input/output D HDCP DDC-bus serial data
HSCLD
141
I
HDMI input D HDCP DDC-bus serial clock
VDDI(3V3)
142
P
digital inputs supply voltage; 3.3 V
RRX2
143
I
HDMI inputs C and D termination resistance control
VDDH(1V8)
144
P
HDMI receiver supply voltage; 1.8 V
Exposed die pad
central G
exposed die pad; connect to digital core ground (VSSC)
Table 3.
Pin description …continued
Symbol
Pin
Type[1] Description


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