SI5351A-A-GMR Silicon Laboratories, SI5351A-A-GMR Datasheet - Page 62
SI5351A-A-GMR
Manufacturer Part Number
SI5351A-A-GMR
Description
Control: I2C; Reference Inputs: 1; Clock Outputs: 8; Input Frequency (MHz): 25/27 MHz (Xtal); Output Frequency (MHz):...
Manufacturer
Silicon Laboratories
Datasheet
1.SI5351A-A-GU.pdf
(72 pages)
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Si5351A/B/C
9. Si5351A Pin Descriptions (20-Pin QFN, 24-Pin QSOP)
62
Pin Name
VDDOC
VDDOD
VDDOA
VDDOB
SSEN
CLK0
CLK1
CLK2
CLK3
CLK4
CLK5
CLK6
CLK7
GND
OEB
VDD
SCL
SDA
1. I = Input, O = Output, P = Power.
2. Input pins are not internally pulled up.
XA
XB
A0
Center Pad
20-QFN
13
12
19
17
16
15
20
10
18
14
11
1
2
9
8
3
4
5
6
7
SDA
SCL
XA
XB
A0
Pin Number
1
5
2
3
4
Si5351A 20-QFN
Top View
5, 8, 17, 19
24-QSOP
GND
PAD
21
20
15
14
24
23
10
12
13
18
16
22
11
6
7
3
1
9
4
2
Table 10. Si5351A Pin Descriptions
15
14
13
12
11
Pin Type*
CLK7
VDDOD
CLK0
CLK1
VDDOA
I/O
O
O
O
O
O
O
O
O
P
P
P
P
P
P
I
I
I
I
I
I
Preliminary Rev. 0.95
Input pin for external crystal.
Input pin for external crystal.
Output clock 0.
Output clock 1.
Output clock 2.
Output clock 3.
Output clock 4.
Output clock 5.
Output clock 6.
Output clock 7.
I
I
I
Spread spectrum enable. High = enabled, Low = disabled.
Output driver enable. Low = enabled, High = disabled.
Core voltage supply pin. See 6.2.
Output voltage supply pin for CLK0 and CLK1. See 6.2.
Output voltage supply pin for CLK2 and CLK3. See 6.2.
Output voltage supply pin for CLK4 and CLK5. See 6.2.
Output voltage supply pin for CLK6 and CLK7. See 6.2.
Ground. Use multiple vias to ensure a solid path to GND.
2
2
2
C address bit.
C bus serial clock input. Pull-up to VDD core with 1 k
C bus serial data input. Pull-up to VDD core with 1 k
VDDOC
SSEN
CLK5
CLK4
VDD
GND
GND
SDA
SCL
XA
XB
A0
Si5351A 24-QSOP
1
2
3
4
5
6
7
8
9
10
11
12
Top View
Function
24
23
22
21
20
19
18
17
16
15
14
13
CLK6
CLK7
VDD0D
CLK0
CLK1
GND
VDDOA
GND
VDD0B
CLK2
CLK3
OEB
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