参数资料
型号: TLE7719-T
厂商: INFINEON TECHNOLOGIES AG
元件分类: 模拟信号调理
英文描述: SPECIALTY ANALOG CIRCUIT, PDSO28
封装: PLASTIC, TSSOP-28
文件页数: 25/75页
文件大小: 1485K
代理商: TLE7719-T
TLE7719-T
Functional Block Description
Data Sheet
31
V1.1, 2004-09-13
3.2.1.5
Sampling clock generation for receiver channels
The satellite data decoder block provides two different modes, depending on the clock
sources that are used for sampling of incoming satellite data:
INTRECV Clock Mode uses the internal 1 MHz source (fSysCLK) derived from pin [CLK]
EXTRECV Clock Mode uses a variable clock provided from pin [CLK_LINE12] or pin
[CLK_LINE34]
The sample clock source is selected independently for channel pairs 1,2 and 3,4 using
the ConfigWrite SPI command (refer to
The pin [CLK] is the system clock input, at which the clock signal is applied by a
microcontroller. The internal system clock frequency is 1MHz. Considering the
implemented, SPI-programmable divider ratios of 4, 8, 16 and 20, TLE7719-T can
handle CLK-frequencies of 4 MHz, 8 MHz, 16 MHz or 20 MHz.
As shown in
Figure 9, the clock signals for the adaptive current threshold regulator
circuitry are derived from the sample clock source as well.
3.2.21 High Voltage rise time
at LINEx
t
rise_LINE-HV
10
s
3.2.22 High Voltage fall time
at LINEx
t
fall_LINE-HV
10
s
I(LINEx)=
-20mA
No.
Parameter
Symbol
Limit Values
Unit Test
Conditions
min.
typ.
max.
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