I2C Read and Write Operations Figure 39 shows the" />
參數(shù)資料
型號： EVAL-ADAU1781Z
廠商： Analog Devices Inc
文件頁數(shù)： 29/92頁
文件大?。?/td> 0K
描述： BOARD EVAL FOR ADAU1781
標(biāo)準(zhǔn)包裝： 1
系列： SigmaDSP®
主要目的： 音頻編解碼器
嵌入式： 是，DSP
已用 IC / 零件： ADAU1781
主要屬性： 立體聲，24 位，8 ~ 96 kHz 采樣率，GUI 工具
次要屬性： *
已供物品： *
ADAU1781
Rev. B| Page 35 of 92
I2C Read and Write Operations
Figure 39 shows the timing of a single-word write operation.
Every ninth clock pulse, the ADAU1781 issues an acknowledge
by pulling SDA low.
Figure 40 shows the timing of a burst mode write sequence.
This figure shows an example where the target destination
registers are two bytes. The ADAU1781 knows to increment its
subaddress register every two bytes because the requested
subaddress corresponds to a register or memory area with a
2-byte word length.
The timing of a single-word read operation is shown in Figure 41.
Note that the first R/W bit is 0, indicating a write operation. This is
because the subaddress still needs to be written to set up the
internal address. After the ADAU1781 acknowledges the receipt
of the subaddress, the master must issue a repeated start command
followed by the chip address byte with the R/
W bit set to 1 (read).
This causes the ADAU1781 SDA to reverse and begin driving
data back to the master. The master then responds every ninth
pulse with an acknowledge pulse to the ADAU1781.
shows the timing of a burst mode read sequence. This
figure shows an example where the target read registers are two
bytes. The ADAU1781 increments its subaddress every two bytes
because the requested subaddress corresponds to a register or
memory area with word lengths of two bytes. Other address
ranges may have a variety of word lengths ranging from one to
five bytes. The ADAU1781 always decodes the subaddress and
sets the auto-increment circuit so that the address increments
after the appropriate number of bytes.
S
AS
SUBADDRESS,
LOW BYTE
AS
...
AS
P
CHIP ADDRESS,
R/W = 0
DATA
BYTE 1
DATA
BYTE 2
DATA
BYTE N
SUBADDRESS,
HIGH BYTE
S = START BIT, P = STOP BIT, AS = ACKNOWLEDGE BY SLAVE.
SHOWS A ONE-WORD WRITE, WHERE EACH WORD HAS N BYTES.
08314-
038
Figure 39. Single-Word I2C Write Sequence
S
AS
...
P
CHIP
ADDRESS,
R/W = 0
SUBADDRESS,
HIGH BYTE
SUBADDRESS,
LOW BYTE
DATA-WORD 1,
BYTE 1
DATA-WORD 1,
BYTE 2
DATA-WORD 2,
BYTE 1
DATA-WORD 2,
BYTE 2
DATA-WORD N,
BYTE 1
DATA-WORD N,
BYTE 2
S = START BIT, P = STOP BIT, AS = ACKNOWLEDGE BY SLAVE.
SHOWS AN N-WORD WRITE, WHERE EACH WORD HAS TWO BYTES. (OTHER WORD LENGTHS ARE POSSIBLE, RANGING FROM ONE TO FIVE BYTES.)
08314-
039
Figure 40. Burst Mode I2C Write Sequence
S
AM
AS
AM
AS
S
AS
...
P
CHIP ADDRESS,
R/W = 0
CHIP ADDRESS,
R/W = 1
DATA
BYTE N
DATA
BYTE 2
DATA
BYTE 1
SUBADDRESS,
HIGH BYTE
SUBADDRESS,
LOW BYTE
S = START BIT, P = STOP BIT, AM = ACKNOWLEDGE BY MASTER, AS = ACKNOWLEDGE BY SLAVE.
SHOWS A ONE-WORD READ, WHERE EACH WORD HAS N BYTES.
08314-
040
Figure 41. Single-Word I2C Read Sequence
S
AS
AM
...
P
CHIP
ADDRESS,
R/W = 0
SUBADDRESS,
HIGH BYTE
SUBADDRESS,
LOW BYTE
DATA-WORD 1,
BYTE 1
DATA-WORD 1,
BYTE 2
DATA-WORD N,
BYTE 1
DATA-WORD N,
BYTE 2
CHIP
ADDRESS,
R/W = 1
S = START BIT, P = STOP BIT, AM = ACKNOWLEDGE BY MASTER, AS = ACKNOWLEDGE BY SLAVE.
SHOWS AN N-WORD READ, WHERE EACH WORD HAS TWO BYTES. (OTHER WORD LENGTHS ARE POSSIBLE, RANGING FROM ONE TO FIVE BYTES.)
08314-
041
Figure 42. Burst Mode I2C Read Sequence
相關(guān)PDF資料
PDF描述
MCP1316T-46BE/OT IC SPRVSR SMPL RSET 4.6V SOT23-5
EBM28DTBN-S189 CONN EDGECARD 56POS R/A .156 SLD
6374110-4 C/A SM, LC TO LC 4METER
EBM28DTBH-S189 CONN EDGECARD 56POS R/A .156 SLD
VI-J0F-EZ-S CONVERTER MOD DC/DC 72V 25W
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
EVAL-ADAU1962AZ 制造商:Analog Devices 功能描述:EVAL BOARD FOR ADAU1962A - Boxed Product (Development Kits) 制造商:Analog Devices 功能描述:Eval Board for ADAU1962A
EVAL-ADAU1966AZ 制造商:Analog Devices 功能描述:EVAL BOARD FOR ADAU1962A - Boxed Product (Development Kits)
EVAL-ADAU1966Z 功能描述:BOARD EVAL FOR ADAU1966 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 數(shù)模轉(zhuǎn)換器 (DAC) 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- DAC 的數(shù)量:4 位數(shù):12 采樣率（每秒）:- 數(shù)據(jù)接口:串行，SPI? 設(shè)置時間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581
EVAL-ADAU1966Z 制造商:Analog Devices 功能描述:ADAU1966, DAC, SIGMA DELTA, SPI, I2C, EV
EVAL-ADAU1978Z 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad Analog-to-Digital Converter (ADC)
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*