Low-Power CK420BQ Derivative for PCIe
Separate Clock Architectures
932SQL456
DATASHEET
General Description
Features/Benefits
The 932SQL456 is a low power version of the CK420BQ
synthesizer for Intel-based server platforms. It has 85 ohm
Low-Power (LP) HCSL outputs that save 48 resistors and
reduce power consumption by 50% compared to the standard
CK420BQ. The 932SQL456 is driven with a 25MHz crystal for
maximum performance. It generates CPU outputs of
100MHz. This device meets Separate- Reference-no-Spread
(SRnS) PCIe requirements making it ideal for use in systems
that need to communicate “outside the box”.
• Integrated 85-ohm differential terminations; saves 48
resistors compared to CK420BQ
• LP-HCSL outputs; up to 50% power savings compared to
standard CK420BQ
• 64-pin TSSOP and VFQFPN packages; smallest board
footprint
• Available in -40° to +85°C industrial temperature range
version; supports demanding operating environments
Output Features
• Differential outputs are LP-HCSL with integrated 85Ω
terminations
Recommended Application
Low-Power CK420BQ for SRnS PCIe Applications
• 11 – non-spreading interchangeable 100MHz differential
Key Specifications
• CPU, SRC, NS_SRC and NS_SAS cycle-cycle jitter <50ps
• Output to output skew <50ps
• Phase jitter: PCIe Gen2 SRnS <2.2ps rms
• Phase jitter: PCIe Gen3 SRnS <0.7ps rms
• Phase jitter: QPI <0.3ps rms
outputs
• 4 – “CPU” outputs
• 2 – “NS_SAS” outputs
• 2 – “NS_SRC” outputs
• 3 – “SRC” outputs
• 1 – DOT96 96MHz output
• 1 – 3.3V 48M output
• 5 – 3.3V PCI outputs
• 1 – 3.3V 14.318M output
• Phase jitter: NS-SAS <1.3ps rms using long period phase
jitter method
Pin Configurations
SMBCLK 1
GND14 2
64 SMBDAT
63 VDDCPU
AVDD14 3
VDD14 4
vREF14_2x/TEST_SELLV 5
GND14 6
62 CPU3_Z85T
61 CPU3_Z85C
60 CPU2_Z85T
59 CPU2_Z85C
58 GNDCPU
GNDXTAL 7
X1_25 8
57 VDDCPU
X2_25 9
VDDXTAL 10
GNDPCI 11
VDDPCI 12
PCI4_2x 13
PCI3_2x 14
PCI2_2x 15
PCI1_2x 16
PCI0_2x 17
GNDPCI 18
VDDPCI 19
VDD48 20
48M_2x 21
GND48 22
GND96 23
56 CPU1_Z85T
55 CPU1_Z85C
54 CPU0_Z85T
53 CPU0_Z85C
52 GNDNS
51 AVDD_NS_SAS
50 NS_SAS1_Z85T
49 NS_SAS1_Z85C
48 NS_SAS0_Z85T
47 NS_SAS0_Z85C
46 GNDNS
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
GNDPCI
VDDPCI
PCI4_2x
PCI3_2x
PCI2_2x
PCI1_2x
PCI0_2x
GNDPCI
VDDPCI
VDD48
1
2
3
4
5
6
7
8
GNDCPU
VDDCPU
CPU1_Z85T
CPU1_Z85C
CPU0_Z85T
CPU0_Z85C
48
47
46
45
44
43
42 GNDNS
932SQL456
epad = pin 65,
connect to GND
AVDD_NS_SAS
41
40
39
38
37
36
35
34
33
9
NS_SAS1_Z85T
NS_SAS1_Z85C
NS_SAS0_Z85T
NS_SAS0_Z85C
GNDNS
VDDNS
NS_SRC1_Z85T
NS_SRC1_Z85C
10
11
12
13
14
15
16
45 VDDNS
48M_2x
44 NS_SRC1_Z85T
43 NS_SRC1_Z85C
42 NS_SRC0_Z85T
41 NS_SRC0_Z85C
40 NC
39 GNDSRC
38 AVDD_SRC
37 VDDSRC
36 SRC2_Z85T
35 SRC2_Z85C
34 SRC1_Z85T
33 SRC1_Z85C
GND48
GND96
DOT96_Z85T
DOT96_Z85C
AVDD96
DOT96_Z85T 24
DOT96_Z85C 25
AVDD96 26
TEST_MODE 27
CKPWRGD#/PD 28
VDDSRC 29
SRC0_Z85T 30
SRC0_Z85C 31
GNDSRC 32
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
64-TSSOP
Note: Pins with ^ prefix have internal 120K pullup
Pins with v prefix have internal 120K pulldown
64-Pin VFQFPN
Note: Pins with ^ prefix have internal 120K pullup
Pins with v prefix have internal 120K pulldown
932SQL456 REVISION B 09/29/15
1
©2015 Integrated Device Technology, Inc.
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