SI5351A-A-GMR Silicon Laboratories, SI5351A-A-GMR Datasheet - Page 63
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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10. Si5351B Pin Descriptions (20-Pin QFN, 24-Pin QSOP)
*Note: I = Input, O = Output, P = Power
*Note: Input pins are not internally pulled up.
Pin Name
VDDOC
VDDOD
VDDOA
VDDOB
SSEN
CLK0
CLK1
CLK2
CLK3
CLK4
CLK5
CLK6
CLK7
GND
OEB
VDD
SCL
SDA
XA
XB
VC
Center Pad
20-QFN
SDA
SCL
13
12
19
17
16
15
20
10
18
14
XA
XB
VC
11
1
2
9
8
3
4
5
6
7
Pin Number
1
2
3
4
5
Si5351B 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 11. Si5351B Pin Descriptions
14
12
15
13
11
CLK7
VDDOD
CLK0
CLK1
VDDOA
Pin Type*
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
VCXO control voltage input
I
I
Spread spectrum enable. High = enabled, Low = disabled.
Output driver enable. Low = enabled, High = disabled.
Core voltage supply pin
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
2
2
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
GND
GND
VDD
SDA
SCL
VC
XA
XB
Si5351B 24-QSOP
1
2
3
4
5
6
7
8
9
10
11
12
Function
Top View
Si5351A/B/C
24
23
22
21
20
19
18
17
16
15
14
13
CLK6
CLK7
VDD0D
CLK0
CLK1
GND
VDDOA
GND
VDD0B
CLK2
CLK3
OEB
63
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