SI52142-A01AGM Silicon_Laboratories, SI52142-A01AGM Datasheet - Page 16

• Manufacturer Part Number: SI52142-A01AGM
• Description: Specifications: Type: Clock/Frequency Generator, Fanout Buffer (Distribution), Multiplexer ; PLL: Yes with Bypass ; Main Purpose: PCI Express (PCIe) ; Input: Clock, Crystal ; Output: Clock ; Number of Circuits: 1 ; Ratio - Input Output: 1 3 ; Differe
• Manufacturer: Silicon_Laboratories

Si52142
5. Pin Descriptions: 24-Pin QFN
16
Pin #
10
1
2
3
4
5
6
7
8
9
VDD_DIFF
OE_DIFF0
VDD_REF
VSS_REF
OE_REF
Name
REF
SS0
SS1
NC
NC
Notes:
1. Internal 100 kohm pull-up.
2. Internal 100 kohm pull-down.
OE_DIFF0
VDD_DIFF
VDD_REF
VSS_REF
OE_REF
REF
1
1
Table 8. Si52142 24-Pin QFN Descriptions
O, SE 3.3 V, 25 MHz crystal reference clock
Type
PWR 3.3 V Power Supply
GND Ground
PWR 3.3 V Power Supply
I, PD 3.3 V tolerant latch-input for enabling Frequency/ Spread selection on
I, PD
I,PU
I,PU
NC
NC
1
2
3
4
5
6
24
Refer to Table 1 on page 4 for OE specifications.
Refer to Table 1 on page 4 for OE specifications.
DIFF0 and DIFF1 outputs. Refer to Table 1 on page 4 for SS[1:0] speci-
fications.
No Connect
No Connect
3.3 V input to disable REF Clock (internal 100 k pull-up).
3.3 V input to disable DIFF0 (internal 100 k pull-up).
7
23
8
Preliminary 0.1
22
9
GND
25
21
10
20
11
12
19
Description
18
17
16
15
14
13
OE_DIFF1
VDD_DIFF
DIFF1
DIFF1
DIFF0
DIFF0
1