參數資料
型號： TAS3103DBTR
廠商： TEXAS INSTRUMENTS INC
元件分類： 消費家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PDSO38
封裝： GREEN, PLASTIC, TSSOP-38
文件頁數： 93/148頁
文件大小： 1247K
代理商： TAS3103DBTR
218
S
Start
(By Master)
TAS3103
Address
Acknowledge
(By TAS3103)
7-Bit Slave
Address
(By Master)
W
Write
(By Master)
ACK
Subaddress
TAS3103
Subaddress
(By Master)
Acknowledge
(By TAS3103)
ACK
S
Stop
(By Master)
S
Start
(By Master)
TAS3103
Address
Acknowledge
(By TAS3103)
7-Bit Slave
Address
(By Master)
R
Read
(By Master)
ACK
Data
(By TAS3103)
ACK
Data
(By TAS3103)
Acknowledge
(By Master)
ACK
Acknowledge
(By Master)
S
Stop
(By Master)
NAK
No Acknowledge
(By Master)
S
Start
(By Master)
TAS3103
Address
Acknowledge
(By TAS3103)
7-Bit Slave
Address
(By Master)
W
Write
(By Master)
ACK
Data
(By Master)
ACK
Data
(By Master)
ACK
S
Stop
(By Master)
ACK
Subaddress
TAS3103
Subaddress
(By Master)
Acknowledge
(By TAS3103)
ACK
Acknowledge
(By TAS3103)
Acknowledge
(By TAS3103)
Acknowledge
(By TAS3103)
I2C Write Transaction
I2C Read Transaction
Figure 216. I2C Subaddress Access Protocol
2.3.2.1 I2C Master Mode Operation
The TAS3103 uses the master mode to download an operational configuration. The configuration downloaded must
contain data for all 256 subaddresses, with spacer data supplied for those subaddresses that are GPIO
subaddresses, read-only subaddresses, factory-test subaddresses, or unused (reserved) subaddresses. The spacer
data must always be assigned the value zero. Table 23 organizes the 256 subaddresses (and their corresponding
EEPROM addresses) into sequential blocks, with each block containing either valid data or spacer data.
Table 23 also illustrates that the subaddresses and their corresponding EEPROM memory addresses do not directly
correlate. This is because many subaddresses are assigned more than one 32-bit word. For example, there is a
unique subaddress for each biquad filter in the TAS3103, but each subaddress is assigned five 32-bit
coefficients—resulting in 20 bytes of memory being assigned to each biquad subaddress.
The TAS3103, in the I2C master mode, can execute a complete download without requiring any wait states. After the
TAS3103 has downloaded all 2367 bytes of coefficient and spacer data, the I2C bus is disabled and cannot be used
to update coefficient values or retrieve status or spectrum/VU meter data. Volume control is available in the master
mode via the four GPIO pins.
In I2C master mode, the watchdog timer must not be enabled.
When programming the EEPROM, make sure that the starting I2C check word (subaddres 0x00) and ending I2C
check word (subaddress 0xFC) are identical.
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