932SQL450 Datasheet, PDF (1/23 Pages) Integrated Device Technology – Integrated 85 ohm differential terminations

Low-Power CK420BQ Derivative for PCIe
Common Clock Architectures
932SQL450
DATASHEET
General Description
The 932SQL450 is a low power version of the CK420BQ
synthesizer for Intel-based server platforms. It has 85-ohm
LP-HCSL outputs allowing for direct connection to 85-ohm
transmission lines. The 932SQL450 is driven with a 25MHz
crystal for maximum performance. It generates CPU outputs
of 100MHz. This device has a “low-drift” non-spread
SAS/SRC PLL for use in systems that need to communicate
across PCIe domains.
Recommended Application
Low Power CK420BQ w/Zout=85ohms or PCIe Common
Clocked Systems (CC)
Key Specifications
• CPU, SRC, NS_SRC and NS_SAS cycle-cycle jitter <50ps
• Output to output skew <50ps
• Phase jitter: PCIe Gen2 <2.5ps rms
• Phase jitter: PCIe Gen3 <0.6ps rms
• Phase jitter: QPI <0.3ps rms
• Phase jitter: NS-SAS <1.3ps rms using long period phase
jitter method
Features/Benefits
• Integrated 85 ohm differential terminations; saves 48
resistors and 82mm² area
• LP-HCSL output drivers; 40% typical power savings over
932SQ420
• 0.5% down spread capable on CPU, SRC and PCI outputs;
reduce EMI
• Additional down spread amounts selectable via SMBus;
maximal system flexibility
• 64-pin TSSOP and VFQFPN packages; smallest board
footprint
Output Features
• 4 - Low-Power HCSL-compatible (LP-HCSL) CPU outputs
• 2 - LP-HCSL NS_SAS outputs
• 2 - LP-HCSL NS_SRC outputs
• 3 - LP-HCSL SRC outputs
• 1 - LP-HCSL DOT96 output
• 1 - 3.3V 48M output
• 5 - 3.3V PCI outputs
• 1 - 3.3V 14.318M output
Pin Configurations
SMBCLK 1
64 SMBDAT
GND14 2
63 VDDCPU
AVDD14 3
62 CPU3_Z85T
VDD14 4
v_{REF14_2x/TEST_SELLV 5}
61 CPU3_Z85C
60 CPU2_Z85T
GND14 6
59 CPU2_Z85C
GNDXTAL 7
58 GNDCPU
X1_25 8
57 VDDCPU
X2_25 9
56 CPU1_Z85T
VDDXTAL 10
55 CPU1_Z85C
GNDPCI 11
54 CPU0_Z85T
VDDPCI 12
53 CPU0_Z85C
PCI4_2x 13
52 GNDNS
PCI3_2x 14
51 AVDD_NS_SAS
PCI2_2x 15
50 NS_SAS1_Z85T
PCI1_2x 16
49 NS_SAS1_Z85C
PCI0_2x 17
48 NS_SAS0_Z85T
GNDPCI 18
47 NS_SAS0_Z85C
VDDPCI 19
46 GNDNS
VDD48 20
45 VDDNS
48M_2x 21
44 NS_SRC1_Z85T
GND48 22
43 NS_SRC1_Z85C
GND96 23
42 NS_SRC0_Z85T
DOT96_Z85T 24
41 NS_SRC0_Z85C
DOT96_Z85C 25
40 NC
AVDD96 26
39 GNDSRC
TEST_MODE 27
38 AVDD_SRC
CKPWRGD#/PD 28
37 VDDSRC
VDDSRC 29
36 SRC2_Z85T
SRC0_Z85T 30
35 SRC2_Z85C
SRC0_Z85C 31
34 SRC1_Z85T
GNDSRC 32
33 SRC1_Z85C
64-TSSOP
Note: Pins with ^ prefix have internal 120K pullup
Pins with v prefix have internal 120K pulldown
932SQL450 REVISION B 03/06/15
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
GNDPCI 1
48 GNDCPU
VDDPCI 2
47 VDDCPU
PCI4_2x 3
46 CPU1_Z85T
PCI3_2x 4
45 CPU1_Z85C
PCI2_2x 5
44 CPU0_Z85T
PCI1_2x 6
43 CPU0_Z85C
PCI0_2x 7
GNDPCI 8
932SQL450
42 GNDNS
41 AVDD_NS_SAS
VDDPCI 9
VDD48 10
EPAD = pin 65
40 NS_SAS1_Z85T
39 NS_SAS1_Z85C
48M_2x 11
38 NS_SAS0_Z85T
GND48 12
37 NS_SAS0_Z85C
GND96 13
36 GNDNS
DOT96_Z85T 14
35 VDDNS
DOT96_Z85C 15
34 NS_SRC1_Z85T
AVDD96 16
33 NS_SRC1_Z85C
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
64-Pin VFQFPN
Note: Pins with ^ prefix have internal 120K pullup
Pins with v prefix have internal 120K pulldown
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