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PCM1795DB 数据表(PDF) 24 Page - Texas Instruments

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部件名 PCM1795DB
功能描述  32-Bit, 192-kHz Sampling, Advanced Segment, Stereo Audio Digital-to-Analog Converter
PDF  58 Pages
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制造商  TI [Texas Instruments]
网页  http://www.ti.com
标志 TI - Texas Instruments

PCM1795DB 数据表(HTML) 24 Page - Texas Instruments

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Slave Address
MSB
LSB
1
0
0
1
1
ADR1
ADR0
R/W
Packet Protocol
9
SDA
SCL
St
Start
Condition
17
8
18
9
18
9
9
Sp
Stop
Condition
SlaveAddress
ACK
DATA
ACK
DATA
ACK
ACK
R/W
ReadOperation
Transmitter
M
M
M
S
S
M
S
M
M
M
DataType
St
SlaveAddress
R
ACK
DATA
ACK
DATA
ACK
NACK
Sp
WriteOperation
Transmitter
M
M
M
S
M
S
M
S
S
M
DataType
St
SlaveAddress
W
ACK
DATA
ACK
DATA
ACK
ACK
Sp
R/ :ReadOperationif1;Otherwise,WriteOperation
ACK:AcknowledgmentofaByteif0
NACK:NotAcknowledgedif1
DATA:8Bits(Byte)
W
M:MasterDevice
S:SlaveDevice
St:StartCondition
Sp:StopCondition
R:Read
:Write
W
ACK:Acknowledge
NACK:NotAcknowledged
PCM1795
SLES248 – MAY 2009 ........................................................................................................................................................................................................ www.ti.com
The PCM1795 has seven bits for its own slave address, as shown in Figure 44. The first five bits (MSBs) of the
slave address are factory preset to 10011. The next two bits of the address byte are the device select bits that
can be user-defined by the ADR1 and ADR0 terminals. A maximum of four PCM1795s can be connected on the
same bus at one time. Each PCM1795 responds when it receives its own slave address.
Figure 44. Slave Address
A master device must control packet protocol that consists of a start condition, slave address, read/write bit, data
if write or acknowledge if read, and stop condition. The PCM1795 supports only slave receivers and slave
transmitters.
Figure 45. Basic I2C Framework
24
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Copyright © 2009, Texas Instruments Incorporated
Product Folder Link(s): PCM1795



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