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SI5341 数据表(PDF) 41 Page - Silicon Laboratories

部件名 SI5341
功能描述  Low-Jitter, 10 or 4-Output, Any-Frequency, Any-Output Clock Generator
PDF  53 Pages
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制造商  SILABS [Silicon Laboratories]
网页  http://www.silabs.com
标志 SILABS - Silicon Laboratories

SI5341 数据表(HTML) 41 Page - Silicon Laboratories

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Pin Name
Pin Number
Pin Type1
Function
Si5341
Si5340
Outputs
OUT0
24
20
O
Output Clocks. These output clocks support a programmable
signal amplitude when configured as a differential output. Desired
output signal format is configurable using register control. Termi-
nation recommendations are provided in 3.5.2 Differential Output
Terminations and 3.5.4 LVCMOS Output Terminations. Unused
outputs should be left unconnected.
OUT0b
23
19
O
OUT1
28
25
O
OUT1b
27
24
O
OUT2
31
31
O
OUT2b
30
30
O
OUT3
35
36
O
OUT3b
34
35
O
OUT4
38
—
O
OUT4b
37
—
O
OUT5
42
—
O
OUT5b
41
—
O
OUT6
45
—
O
OUT6b
44
—
O
OUT7
51
—
O
OUT7b
50
—
O
OUT8
54
—
O
OUT8b
53
—
O
OUT9
59
—
O
OUT9b
58
—
O
Serial Interface
I2C_SEL
39
38
I
I2C Select.2 This pin selects the serial interface mode as I2C
(I2C_SEL = 1) or SPI (I2C_SEL = 0). This pin is internally pulled
up by a ~ 20 kΩ resistor to the voltage selected by the
IO_VDD_SEL register bit.
SDA/SDIO
18
13
I/O
Serial Data Interface.2 This is the bidirectional data pin (SDA) for
the I2C mode, or the bidirectional data pin (SDIO) in the 3-wire
SPI mode, or the input data pin (SDI) in 4-wire SPI mode. When
in I2C mode, this pin must be pulled-up using an external resistor
of at least 1 kΩ. No pull-up resistor is needed when in SPI mode.
A1/SDO
17
15
I/O
Address Select 1/Serial Data Output.2 In I2C mode, this pin
functions as the A1 address input pin and does not have an inter-
nal pull up or pull down resistor. In 4-wire SPI mode this is the se-
rial data output (SDO) pin (SDO) pin and drives high to the volt-
age selected by the IO_VDD_SEL pin.
SCLK
16
14
I
Serial Clock Input.2 This pin functions as the serial clock input
for both I2C and SPI modes.This pin is internally pulled up by a
~20 kΩ resistor to the voltage selected by the IO_VDD_SEL regis-
ter bit. In I2C mode this pin should have an external pull up of at
least 1 kΩ. No pull-up resistor is needed when in SPI mode.
Si5341/40 Rev D Data Sheet
Pin Descriptions
silabs.com | Smart. Connected. Energy-friendly.
Rev. 1.0 | 40



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