參數(shù)資料
型號(hào)： BUF08821AIPWPR
廠商： TEXAS INSTRUMENTS INC
元件分類： 時(shí)鐘產(chǎn)生/分配
英文描述： VIDEO CLOCK GENERATOR, PDSO20
封裝： GREEN, PLASTIC, HTSSOP-20
文件頁數(shù)： 3/27頁
文件大?。?/td> 654K
代理商： BUF08821AIPWPR
www.ti.com ................................................................................................................................................. SBOS438C – AUGUST 2008 – REVISED AUGUST 2009
Parity Error Correction
Write commands are performed by setting the
read/write bit LOW. Setting the read/write bit HIGH
The
BUF08821
provides
single-bit
parity
error
performs a read transaction.
correction for data stored in the nonvolatile memory
to provide increased reliability of the nonvolatile
Writing: DAC/VCOM Register (Volatile Memory)
memory. If a single bit of nonvolatile memory for a
channel fails, the BUF08821 corrects for it and
To write to a single DAC/VCOM register:
updates the appropriate DAC with the intended value
1. Send a START condition on the bus.
when its memory is acquired.
2. Send the device address and read/write bit =
If more than one bit of nonvolatile memory for a
LOW. The BUF08821 acknowledges this byte.
channel fail, the BUF08821 does not correct for it,
3. Send a DAC/VCOM pointer address byte. Set bit
and updates the appropriate DAC/VCOM with the
D7 = 0 and D6 = 0. Bits D5–D0 are the
default value of 1000000000.
DAC/VCOM
address.
The
BUF08821
acknowledges, stores, and returns data only from
DIE_ID AND DIE_REV REGISTERS
these addresses:
The user can verify the presence of the BUF08821 in
–
000000 through 000111
the system by reading from address 111101. The
–
010010
BUF08821A returns 0010001001110101 when read
See Table 4 for valid DAC/VCOM addresses.
at
this
address.
The
BUF08821B
returns
4. Send two bytes of data for the specified register.
0010001001111101 when read at this address.
Begin by sending the most significant byte first
(bits D15–D8, of which only bits D9 and D8 are
The user can also determine the die revision of the
used, and bits D15–D14 must not be 01),
BUF08821
by
reading
register
111100.
The
followed
by
the
least
significant
byte
(bits
BUF08821 returns 0000000000000000 when a RevA
D7–D0). The register is updated after receiving
die is present. RevB would be designated by
the second byte.
0000000000000001, and so on.
5. Send a STOP or START condition on the bus.
READ/WRITE OPERATIONS
The BUF08821 acknowledges each data byte. If the
Read and write operations can be done for a single
master terminates communication early by sending a
DAC/VCOM or for multiple DACs/VCOM. Writing to a
STOP or START condition on the bus, the specified
DAC/VCOM register differs from writing to the
register is not updated. Updating the DAC/VCOM
nonvolatile memory. Bits D15–D14 of the most
register is not the same as updating the DAC/VCOM
significant byte of data determines if data are written
output voltage; see the Output Latch section.
to the DAC/VCOM register or the nonvolatile memory.
Read/Write: DAC/VCOM Register (volatile memory)
The BUF08821 is able to read from a single
DAC/VCOM, or multiple DACs/VCOM, or write to the
register of a single DAC/VCOM, or multiple DACs/VCOM
in a single communication transaction. DAC pointer
addresses begin with 000000 (which corresponds to
OUT1)
through
000111
(which
corresponds
to
OUT8). Address 010010 is for VCOM.
For writes to multiple channels in a single transaction,
the register pointer increments directly from 000111
through
010010.
This
allows
all
eight
gamma
channels plus the VCOM channel to be updated in one
transaction by sending nine words of data.
Copyright 2008–2009, Texas Instruments Incorporated
11
Product Folder Link(s): BUF08821
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
BUF08821AIPWPRG4 功能描述:LCD Gamma緩沖器 8 Ch LCD Gamma Buffer RoHS:否 制造商:Maxim Integrated 輸入補(bǔ)償電壓: 轉(zhuǎn)換速度: 電源電壓-最大:20 V 電源電壓-最小:9 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-38 封裝:Tube
BUF08821B 制造商:TI 制造商全稱:Texas Instruments 功能描述:Programmable Gamma-Voltage Generator and VCOM Calibrator with Integrated Two-Bank Memory
BUF08821BIPWPR 功能描述:LCD Gamma緩沖器 Progr Gamma-Voltage Gen & Vcom Calibr RoHS:否 制造商:Maxim Integrated 輸入補(bǔ)償電壓: 轉(zhuǎn)換速度: 電源電壓-最大:20 V 電源電壓-最小:9 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-38 封裝:Tube
BUF08821EVM 功能描述:放大器 IC 開發(fā)工具 BUF08821 Eval Mod RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
BUF08821EVM-USB 功能描述:放大器 IC 開發(fā)工具 BUF08821 EVAL MOD RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評(píng)估:IR4302 工作電源電壓:13 V to 23 V
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