參數(shù)資料
型號: TEA5777HL/N2,118
廠商: NXP SEMICONDUCTORS
元件分類: 接收器
英文描述: AM/FM, AUDIO SINGLE CHIP RECEIVER, PQFP32
封裝: 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-358-1, LQFP-32
文件頁數(shù): 7/47頁
文件大?。?/td> 219K
代理商: TEA5777HL/N2,118
TEA5777_1
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 01 — 11 April 2006
15 of 47
Philips Semiconductors
TEA5777
Low-power AM/FM stereo radio for handheld applications
9.
Control functions via I2C-bus and 3-wire bus
9.1 Bus interface
Via the bus interface a couple of main blocks are controlled:
Tuning system
Autonomous search
AM capacitor bank (C-bank control)
IF counter
4-bit level ADC
Stereo decoder
Mute and de-emphasis
SWPORT1 and SWPORT2 outputs (I/O port control)
9.2 Bus protocol
The TEA5777 bus interface is a combination of an I2C-bus and a 3-wire-bus. The bus
mode is determined by the bus mode input pin BUSMODE which will be connected to
ground or to VCCD:
Pin BUSMODE = HIGH enables the 3-wire mode
Pin BUSMODE = LOW enables I2C-bus mode
Fig 4.
Bus interface
001aab436
3-WIRE BUS OR
I2C-BUS
INTERFACE
MUTE
DE-EMPHASIS
STEREO
DECODER
AUTONOMOUS
SEARCH
C-BANK
CONTROL
I/O PORT
CONTROL
TUNING
SYSTEM
IF COUNTER
LEVEL ADC
BUS INTERFACE
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