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參數(shù)資料
| 型號： | ADV7196 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Multiformat Progressive Scan/HDTV Encoder with Three 11-Bit DACs, 10-Bit Data Input, and Macrovision |
| 中文描述： | 多格式逐行掃描/高清晰度電視編碼器三種11位DAC，10位數(shù)據(jù)輸入，以及Macrovision |
| 文件頁數(shù)： | 12/36頁 |
| 文件大?。?/td> | 501K |
| 代理商： | ADV7196 |
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REV. 0
ADV7196A
–12–
A Logic “0” on the LSB of the first byte means that the master will
write information to the peripheral. A Logic “1” on the LSB of
the first byte means that the master will read information from
the peripheral.
The ADV7196A acts as a standard slave device on the bus. The
data on the SDA pin is 8 bits long supporting the 7-bit addresses plus
the R/
W
bit. It interprets the first byte as the device address and
the second byte as the starting subaddress. The subaddresses auto-
increment allowing data to be written to or read from the starting
subaddress. A data transfer is always terminated by a Stop con-
dition. The user can also access any unique subaddress register
on a one by one basis without having to update all the registers.
Stop and Start conditions can be detected at any stage during the
data transfer. If these conditions are asserted out of sequence with
normal read and write operations, then these cause an immedi-
ate jump to the idle condition. During a given SCL high period
the user should only issue one Start condition, one Stop condition
or a single Stop condition followed by a single Start condition.
If an invalid subaddress is issued by the user, the ADV7196A will
not issue an acknowledge and will return to the idle condition. If
in autoincrement mode, the user exceeds the highest subaddress
then the following action will be taken:
1. In Read Mode, the highest subaddress register contents will
continue to be output until the master device issues a no-
acknowledge. This indicates the end of a read. A no-acknowledge
condition is where the SDA line is not pulled low on the
ninth pulse.
2. In Write Mode, the data for the invalid byte will be not be
loaded into any subaddress register, a no-acknowledge will
be issued by the ADV7196A and the part will return to the
idle condition.
1
–
7
8
9
1
–
7
8
9
1
–
7
8
9
P
S
START ADDR R/
W
ACK SUBADDRESS ACK
DATA
ACK
STOP
SDATA
SCLOCK
Figure 12. Bus Data Transfer
Figure 12 illustrates an example of data transfer for a read
sequence and the Start and Stop conditions.
Figure 13 shows bus write and read sequences.
REGISTER ACCESSES
The MPU can write to or read from all of the registers of the
ADV7196A except the Subaddress Registers, which are write-only
registers. The Subaddress Register determines which register the
next read or write operation accesses.
All communications with the part through the bus begin with an
access to the Subaddress Register. A read/write operation is per-
formed from/to the target address which then increments to the
next address until a Stop command on the bus is performed.
DATA
A(S)
S
SLAVE ADDR
A(S)
SUB ADDR
A(S)
LSB = 0
LSB = 1
DATA
A
(S)
P
S
SLAVE ADDR
A(S)
SUB ADDR
A(S) S
SLAVE ADDR
A(S)
DATA
A(M)
A
(M)
DATA
P
WRITE
SEQUENCE
READ
SEQUENCE
S = START BIT
P = STOP BIT
A(S) = ACKNOWLEDGE BY SLAVE
A(M) = ACKNOWLEDGE BY MASTER
A
(S) = NO-ACKNOWLEDGE BY SLAVE
A
(M) = NO-ACKNOWLEDGE BY MASTER
Figure 13. Write and Read Sequence
相關PDF資料 |
PDF描述 |
|---|---|
| ADV7196A | Multiformat Progressive Scan/HDTV Encoder with Three 11-Bit DACs, 10-Bit Data Input, and Macrovision |
| ADV7196AKS | Multiformat Progressive Scan/HDTV Encoder with Three 11-Bit DACs, 10-Bit Data Input, and Macrovision |
| ADV7197 | Multiformat HDTV Encoder with Three 11-Bit DACs |
| ADV7197KST | Multiformat HDTV Encoder with Three 11-Bit DACs |
| ADV7304A | Multiformat SD, Progressive Scan/HDTV Video Encoder with Six NSV 14-Bit DACs |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ADV7196A | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat Progressive Scan/HDTV Encoder with Three 11-Bit DACs, 10-Bit Data Input, and Macrovision |
| ADV7196AKS | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat Progressive Scan/HDTV Encoder with Three 11-Bit DACs, 10-Bit Data Input, and Macrovision |
| ADV7197 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat HDTV Encoder with Three 11-Bit DACs |
| ADV7197KS | 制造商:Analog Devices 功能描述:Video Encoder 3DAC 11-Bit 52-Pin MQFP 制造商:Rochester Electronics LLC 功能描述:MULTI-FORMAT HDTV ENCODER, 3 11-BIT DACS - Bulk |
| ADV7197KST | 制造商:AD 制造商全稱:Analog Devices 功能描述:Multiformat HDTV Encoder with Three 11-Bit DACs |
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