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| 型號： | TAS3218IPZPR |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | GREEN, PLASTIC, TQFP-100 |
| 文件頁數(shù)： | 27/79頁 |
| 文件大小： | 1263K |
| 代理商： | TAS3218IPZPR |
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I2C Slave Mode Operation
www.ti.com ....................................................................................................................................................................................................... SLES235 – JULY 2008
The I2C slave mode is the mode that is used to change configuration parameters during operation and perform
program and coefficient downloads from a master device. The latter can be used to replace the I2C master mode
EEPROM download.
The TAS3218 uses the slave mode to load the memory contents for the:
Micro program memory
Micro extended memory
DSP program memory
DSP coefficient memory
DSP data memory
Update coefficient and other control values
Read status flags
The TAS3218 support both random and sequential I2C transactions. The TAS3218 I2C slave address is
011010X, where the first 6 bits are the TAS3218 device address and the final 1 bit is set by the TAS3218 internal
microprocessor at power-up. The internal microprocessor derives the last bit from an external pin (pin CS) which
is pulled up or down to create two unique addresses for control of multiple-TAS3218 part applications. The
pulldown resistance of CS creates a default 00 address when no connection is made to the pin.
The TAS3218 I2C block does respond to the broadcast address (00h).
NOTE:
When acting as an I2C slave, data rate transfer is determined by the master device on
the bus. However, the setting of I2C parameter N at sub-address 0x01 does play a
role in setting the maximum possible data transfer rate. In the I2C slave mode, bit
rates other than (and including) the I2C-specific 100 Kbps and 400 Kbps bit rates can
be obtained, but N must always be set so that the over-sample clock into the I2C
master and slave controllers is at least a factor of 20 higher in frequency than SCL.
N = 0 is a special case. When N = 0, a mode is enabled that detects I2C frames and enables the TAS3218 I2C
interface to reset and continue operation after receiving an invalid I2C frame.
Table 7.
I2C Slave Addresses
SLAVE ADDRESS
CS
0x68/69
0
0x6A/6B
1
Table 8.
I2C Master Addresses
SLAVE ADDRESS
CS
0xA0/A1
0
0xA2/A3
1
Copyright 2008, Texas Instruments Incorporated
33
Product Folder Link(s): TAS3218
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| TAS3218PZP | 功能描述:音頻 DSP Dig Audio SoC for multi-channel app RoHS:否 制造商:Texas Instruments 工作電源電壓: 電源電流: 工作溫度范圍: 安裝風格: 封裝 / 箱體: 封裝:Tube |
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