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參數(shù)資料
| 型號(hào)： | TDA7528 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP64 |
| 封裝： | 10 X 10 MM, 1.40 MM HEIGHT, ROHS COMPLIANT, LQFP-64 |
| 文件頁(yè)數(shù)： | 31/65頁(yè) |
| 文件大?。?/td> | 610K |
| 代理商： | TDA7528 |
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TDA7528
Electrical characteristics
Doc ID 13141 Rev 6
Pin configuration of the serial data interface:
The "PS"-pin (Protocol Select) determines which communication protocol is used for
communication between the microcontroller and the TDA7528. The information is not latched,
so any level change at this pin immediately affects the protocol used by the TDA7528.(a)
3.11.2
Communication using the I2C protocol
For I2C communication, pin "PS" needs to be open. Pin "AS" (Address Select) determines
which I2C address or group of addresses (see below) is used for communication between
the microcontroller and TDA7528. Three different external connections are defined to
represent three groups of addresses. The information is not latched, so any level change at
this pin immediately affects the address used by the TDA7528.(b)
Table 26.
Pin configuration of the serial data interface
Signal #
Pin
SPI signal
Pin
I2C signal
Signal 1
PS
Protocol Select SPI/I2C
PS
Protocol Select SPI/I2C
Signal 2
CS
Chip Select
AS
Address Select
Signal 3
CLK
Clock
CLK
Clock
Signal 4
MOSI
Master Out – Slave In
DATA
bidirectional Data
Signal 5
MISO
Master In – Slave Out
GP6
General Purpose Out
a.
Protocol changes are not permitted during a communication sequence unless the I2C STOP condition is
established or in SPI mode the CS line is deactivated, because the consequences are not predictable. Usually
there is no need for any protocol change during operation, so the PS pin is connected to either GND or left open
b.
Address changes are not permitted during an I2C communication sequence unless the I2C STOP condition is
established, because the consequences are not predictable. Usually there is no need for any address change
during operation, so the AS pin is connected to either GND, an 20k pull down resistor or left open.
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