參數(shù)資料
型號(hào)： 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)： 10/47頁
文件大小： 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
18 of 47
Philips Semiconductors
TEA5777
Low-power AM/FM stereo radio for handheld applications
[1]
H = HIGH-level output voltage
L = LOW-level output voltage
9.4 3-wire bus mode
For the 3-wire bus mode pin BUSMODE = HIGH, i.e. connected to VCCA. The pins
CLOCK, DATA and WRITE_READ are used to communicate with the external hardware
(microcontroller or PC). The bus operates at a maximum clock of 1 MHz.
The selected mode (read or write mode) is determined by the rising or falling edge of
signal WRITE_READ.
9.4.1 Write mode
At the rising edge of signal WRITE_READ the bus interface is set to the write mode. At
every rising edge of the clock input (CLOCK) the data is clocked in. Signal DATA has to be
stable before it can be clocked in.
Table 7.
Denition pin WRITE_READ functionality in I2C-bus Dbus mode
Bit
Pin WRITE_READ
DBUS
SEARCH IFCE
Output signal
Status[1]
0
X
3-state
not applicable
1
0
mono or stereo ag
H = stereo, L = mono
0
1
IFCRDY ag
H = IF counter ready
1
X
SFOUND or BLIM ag
H = station found or band limit reached
Fig 5.
3-wire bus write data
001aae434
50 %
tsu(clk)
tsu(D)
valid data
tw(W)
50 %
WRITE_READ
CLOCK
DATA
th(D)
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