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参数资料
| 型号： | TAS3204PAGR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封装： | GREEN, PLASTIC, TQFP-64 |
| 文件页数： | 25/76页 |
| 文件大小： | 1224K |
| 代理商： | TAS3204PAGR |
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SDA
SCL
0
S
Start
(By Master)
Slave Address
(By Master)
0
1
0
1
C
S
0
Read or Write
(By Master)
R
/
W
A
C
K
M
S
B
Acknowledge
(By TAS3204)
L
S
B
Data Byte
(By Transmitter)
A
C
K
Acknowledge
(By Receiver)
M
S
B
L
S
B
Data Byte
(By Transmitter)
A
C
K
Acknowledge
(By Receiver)
S
Stop
(By Master)
MSB
MSB-1 MSB-2
LSB
Start Condition
SDA ↓While SCL = 1
Stop Condition
SDA ↑While SCL = 1
(1)
www.ti.com
SLES197C – APRIL 2007 – REVISED MARCH 2011
8.3
I
2C Slave Mode Operation
In the slave mode, the I2C bus is used to:
Load the program and coefficient data
–
MCU program memory
–
MCU extended memory
–
Audio DSP core program memory
–
Audio DSP core coefficient memory
–
Audio DSP core data memory
Update coefficient and other control values
Read status flags
The coefficient download operation in slave mode can be used to replace the I2C master-mode EEPROM
download. The TAS3204 supports both random and sequential I2C transactions. The TAS3204 I2C slave
address is 0b011010xy, where the first six bits are the TAS3204 device address and bit x is CS0, which is
set by the TAS3204 internal MCU at power up. Bit y is the R/W bit. The pulldown resistance of CS0
creates a default 00 address when no connection is made to the pin. Table 6-1 and Table 8-3 show all the
legal addresses for I2C slave and master modes.
Once the MCU program memory has been loaded, it cannot be updated until the TAS3204 has been
reset.
The master and slave modes do not operate simultaneously.
When acting as an I2C slave, the data transfer rate is determined by the master device on the bus.
Figure 8-3. I2C Slave-Mode Communication Protocol
The number of data bytes plus the two bytes checksum must be evenly divisible by the word size.
The size field is equal to (header + payload + end checksum).
Copyright 2007–2011, Texas Instruments Incorporated
31
I2C Control Interface
Product Folder Link(s): TAS3204
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