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參數(shù)資料
| 型號： | AD8197ASTZ-RL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | 4:1 HDMI/DVI Switch with Equalization |
| 中文描述： | 4-CHANNEL, AUDIO/VIDEO SWITCH, QCC100 |
| 封裝： | 14 X 14 MM, LEAD FREE, MS-028BED, LQFP-100 |
| 文件頁數(shù)： | 17/32頁 |
| 文件大小： | 486K |
| 代理商： | AD8197ASTZ-RL |
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Preliminary Data Sheet
AD8197
PrA | Page 17 of 32
START
FIXED PART
ADDR
REGISTER ADDR
FIXED PART
ADDR
DATA
STOP
ACK
ADDR
ACK
R/W
ADDR
ACK
ACK
R/W
SR
1
2
3
4
5
6
7
8
9 10 11
12
13
I2C_SCL
GENERAL CASE
I2C_SDA
EXAMPLE
I2C_SDA
0
Figure 30. I
2
C Read Diagram
READ PROCEDURE
To read data from the AD8197 register set, an I
2
C master (such
as a microcontroller) needs to send the appropriate control
signals to the AD8197 slave device. The signals are controlled
by the I
2
C master, unless otherwise specified. For a diagram of
the procedure, see Figure 30. The steps for a read procedure are
as follows:
1.
Send a start condition (while holding the I2C_SCL line
high, pull the I2C_SDA line low).
2.
Send the AD8197 part address (seven bits). The upper four
bits of the AD8197 part address are the static value [1001]
and the three LSBs are set by Input Pin I2C_ADDR2, Input
Pin I2C_ADDR1, and Input Pin I2C_ADDR0 (LSB). This
transfer should be MSB first.
3.
Send the write indicator bit (0).
4.
Wait for the AD8197 to acknowledge the request.
5.
Send the register address (eight bits) from which data is to
be read. This transfer should be MSB first.
6.
Wait for the AD8197 to acknowledge the request.
7.
Send a repeated start condition (Sr) by holding the
I2C_SCL line high and pulling the I2C_SDA line low.
8.
Resend the AD8197 part address (seven bits) from Step 2.
The upper four bits of the AD8197 part address are the
static value [1001] and the three LSBs are set by the Input
Pin I2C_ADDR2, I2C_ADDR1 and Input Pin I2C_ADDR0
(LSB). This transfer should be MSB first.
9.
Send the read indicator bit (1).
10.
Wait for the AD8197 to acknowledge the request.
11.
The AD8197 serially transfers the data (eight bits) held in
the register indicated by the address set in Step 5. This data
is sent MSB first.
12.
Acknowledge the data from the AD8197.
13.
Perform one of the following:
13a.
S
op condition (while holding the I2C_SCL
line high, pull the SDA line high) and release control
of the bus to end the transaction (shown in Figure 30).
Send a repeated start condition (while holding the
I2C_SCL lin
e high, pull the I2C_SDA line low) and
ntinue
co
with Step 2 of the write procedure (prev
Write Procedure section) to perform a write.
end a st
13b.
ious
13c.
13d.
2C_SDA line low) and
ntinue
co
read from the same address.
SWITCH
There is a delay between when a user writes to the configura-
tion registers of the AD8197 and when tha
physical effect. This update delay occurs regardless of whether
the user programs the AD8197 via the serial or the parallel
control interface. When using the serial control interface, the
update delay begins at the falling edge of I2C_SCL for the last
data bit transferred, as shown in Figure 29. When using the
parallel control interface, the update delay begins at the
transition edge of the relevant parallel interface pin. This updat
delay is register specific and the times are specified in Table 1
t state change takes
e
.
g
ow;
d
Send a repeated start condition (while holding the
I2C_SCL line high, pull the I2C_SDA line low) and
continue with Step 2 of this procedure to perform a
read from another address.
Send a repeated start condition (while holding the
I2C_SCL line high, pull the I
with Step 8 of this procedure to perform a
ING/UPDATE DELAY
During a delay window, new values can be written to the
configuration registers but the AD8197 does not physically
update until the end of that register’s delay window. Writin
new values during the delay window does not reset the wind
new values supersede the previously written values. At the en
of the delay window, the AD8197 physically assumes the state
indicated by the last set of values written to the configuration
registers. If the configuration registers are written after the delay
window ends, the AD8197 immediately updates and a new
delay window begins.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8197B | 制造商:AD 制造商全稱:Analog Devices 功能描述:4:1 HDMI/DVI Switch with Equalization |
| AD8197BASTZ | 功能描述:IC SWITCH DVI/HDMI 4:1 100-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關(guān)，多路復(fù)用器，多路分解器 系列:- 應(yīng)用說明:Ultrasound Imaging Systems Application Note 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:250 系列:- 功能:開關(guān) 電路:單刀單擲 導(dǎo)通狀態(tài)電阻:48 歐姆 電壓電源:單電源 電壓 - 電源，單路/雙路(±):2.7 V ~ 5.5 V 電流 - 電源:5µA 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:48-LQFP 供應(yīng)商設(shè)備封裝:48-LQFP（7x7） 包裝:托盤 |
| AD8197BASTZ-RL | 功能描述:IC SWITCH DVI/HDMI 4:1 100-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關(guān)，多路復(fù)用器，多路分解器 系列:- 其它有關(guān)文件:STG4159 View All Specifications 標(biāo)準(zhǔn)包裝:5,000 系列:- 功能:開關(guān) 電路:1 x SPDT 導(dǎo)通狀態(tài)電阻:300 毫歐 電壓電源:雙電源 電壓 - 電源，單路/雙路(±):±1.65 V ~ 4.8 V 電流 - 電源:50nA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:7-WFBGA，F(xiàn)CBGA 供應(yīng)商設(shè)備封裝:7-覆晶 包裝:帶卷 (TR) |
| AD8197BASTZ-RLKL1 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD8197B-EVALZ | 制造商:Analog Devices 功能描述:EVAL KIT FOR 4:1 HDMI/DVI SWIT W/ EQUALIZATION - Bulk |
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