NB3N1900K D

NB3N1900K
3.3V 100/133 MHz
Differential 1:19 HCSL
Clock ZDB/Fanout Buffer for
PCIe[
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Description
The NB3N1900K differential clock buffers are designed to work in
conjunction with a PCIe compliant source clock synthesizer to provide
point−to−point clocks to multiple agents. The device is capable of
distributing the reference clocks for Intel® QuickPath Interconnect
(Intel QPI), PCIe Gen1, Gen2, Gen3. The NB3N1900K internal PLL is
optimized to support 100 MHz and 133 MHz frequency operation.
The NB3N1900K supports HCSL output levels.
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Fixed Feedback Path for Lowest Input−to−Output Delay
Eight Dedicated OE# Pins for Hardware Control of Outputs
PLL Bypass Configurable for PLL or Fanout Operation
Selectable PLL Bandwidth
Spread Spectrum Compatible: Tracks Input Clock Spreading for Low
EMI
SMBus Programmable Configurations
100 MHz and 133 MHz PLL Mode to Meet the Next Generation
PCIe Gen2 / Gen 3 and Intel QPI Phase Jitter
2 Tri−Level Addresses Selection (Nine SMBUS Addresses)
Cycle−to−Cycle Jitter: < 50 ps
Output−to−Output Skew: < 65 ps
Input−to−Output Delay: Fixed at 0 ps
Input−to−Output Delay Variation: < 50 ps
Phase Jitter: PCIe Gen3 < 1 ps rms
Phase Jitter: QPI 9.6GB/s < 0.2 ps rms
QFN 72−pin Package, 10 mm x 10 mm
These are Pb−Free Devices
© Semiconductor Components Industries, LLC, 2015
January, 2015 − Rev. 3
1
MARKING
DIAGRAM*
1
1 72
QFN72
MN SUFFIX
CASE 485DK
NB3N
1900K
AWLYYWWG
NB3N1900K = Specific Device Code
A
= Assembly Location
WL
= Wafer Lot
YY
= Year
WW
= Work Week
G
= Pb−Free Package
ORDERING INFORMATION
See detailed ordering and shipping information on page 19 of
this data sheet.
Publication Order Number:
NB3N1900K/D
NB3N1900K
8
OE[5:12]#
FB_OUT
FB_OUT#
SSC Compatible
PLL
CLK_IN
DIF[18:0]
MUX
DIF[18:0]#
CLK_IN#
100M_133M#
HBW_BYP_LBW#
SA_0
SA_1
PWRGD/PWRDN#
SDA
SCL
NOTE:
Control
Logic
Even though the feedback is fixed FB_OUT and FB_OUT# still needs a
termination network for the part to function.
Figure 1. Simplified Block Diagram of NB3N1900K
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2
IREF
OE12#
DIF12#
DIF12
63
VDD
64
DIF13
65
DIF13#
66
DIF14
GND
67
DIF14#
DIF15
68
DIF15#
69
DIF16
70
DIF16#
DIF17#
71
VDD
DIF18
72
DIF17
DIF18#
NB3N1900K
61
60
59
58
57
56
55
62
VDDA
1
54 OE11#
GNDA
2
53 DIF11#
IREF
3
52 DIF11
100M_133M#
4
51 OE10#
HBW_BYP_LBW#
5
50 DIF10#
PWRGD/PWRDN#
6
49 DIF10
GND
7
48 OE9#
VDDR
8
47
CLK_IN
9
CLK_IN#
10
45 VDD
SA_0
11
44 GND
SDA
12
43 OE8#
SCL
13
42 DIF8#
SA_1
14
41 DIF8
NC
15
40 OE7#
NC
16
39 DIF7#
FB_OUT#
17
38 DIF7
FB_OUT
18
37 OE6#
30
31
32
33
34
35
36
VDD
DIF5
DIF5#
OE5#
DIF6
DIF6#
28
DIF4#
27
29
DIF4
26
DIF3#
25
DIF3
VDD
24
GND
DIF0#
23
DIF2#
DIF0
22
DIF2
21
DIF1#
20
DIF1
19
FB_OUT pins loaded the same as the DIF outputs.
Figure 2. Pin Configuration
(Top View)
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3
DIF9#
46 DIF9
NB3N1900K
NB3N1900K
Table 1. PLL OPERATING MODE READBACK TABLE
Table 5. PLL OPERATING MODE
HBW_BYP_LBW#
Byte0, bit 7
Byte 0, bit 6
HBW_BYP_LBW#
MODE
Low (Low BW)
0
0
Low
PLL Lo BW
Mid (Bypass)
0
1
Mid
Bypass
High (High BW)
1
1
High
PLL Hi BW
NOTE:
PLL is OFF in Bypass
Table 2. POWER CONNECTIONS
Table 6. MODE TRI−LEVEL INPUT THRESHOLD
Pin Number
VDD
GND
Description
Level
Voltage
1
2
Analog PLL
Low
< 0.8 V
8
7
Analog Input
Mid
1.2 < Vin < 1.8 V
21, 31, 45,
58, 68
26, 44, 63
DIF clocks
High
Vin > 2.2 V
Table 3. FUNCTIONALITY AT POWER UP (PLL MODE)
100M_133M#
CLK_IN
(MHz)
DIF
(MHz)
1
100.00
CLK_IN
0
133.33
CLK_IN
Table 4. NB3N1900K SMBus ADDRESSING
Pin
SA_1
SA_0
SMBus Address − 8 bit
(Rd/Wrt bit = 0)
0
0
D8
0
M
DA
0
1
DE
M
0
C2
M
M
C4
M
1
C6
1
0
CA
1
M
CC
1
1
CE
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NB3N1900K
Table 7. PIN DESCRIPTION
Pin #
Pin Name
Pin Type
1
VDDA
PWR
3.3 V power for the PLL core.
Description
2
GNDA
PWR
Ground pin for the PLL core.
This pin establishes the reference for the differential current−mode output pairs. It
requires a fixed precision resistor to ground. 475 W is the standard value for 100 W
differential impedance. Other impedances require different values.
See data sheet.
3
IREF
OUT
4
100M_133M#
IN
Input to select operating frequency
1 = 100.00 MHz, 0 = 133.33 MHz
5
HBW_BYP_LBW#
IN
Trilevel input to select High BW, Bypass or Low BW mode.
See PLL Operating Mode Table for Details.
6
PWRGD/PWRDN#
IN
Notifies device to sample latched inputs and start up on first high assertion, or exit
Power Down Mode on subsequent assertions. Low enters Power Down Mode.
7
GND
PWR
Ground pin.
8
VDDR
PWR
3.3 V power for differential input clock (receiver). This VDD should be treated as an
analog power rail and filtered appropriately.
9
CLK_IN
IN
0.7 V Differential true input
10
CLK_IN#
IN
0.7 V Differential complementary Input
11
SA_0
IN
SMBus address bit. This is a tri−level input that works in conjunction with the SA_1
to decode 1 of 9 SMBus Addresses.
12
SDA
I/O
Data pin of SMBus circuitry, 5V tolerant
13
SCL
IN
Clock pin of SMBus circuitry, 5V tolerant
14
SA_1
IN
SMBus address bit. This is a tri−level input that works in conjunction with the SA_0
to decode 1 of 9 SMBus Addresses.
15
NC
N/A
No Connection.
16
NC
N/A
No Connection.
17
FB_OUT#
OUT
Complementary half of differential feedback output, provides feedback signal to the
PLL for synchronization with input clock to eliminate phase error.
18
FB_OUT
OUT
True half of differential feedback output, provides feedback signal to the PLL for
synchronization with the input clock to eliminate phase error.
19
DIF0
OUT
0.7 V differential true clock output
20
DIF0#
OUT
0.7 V differential complementary clock output
21
VDD
PWR
Power supply, nominal 3.3 V
22
DIF1
OUT
0.7 V differential true clock output
23
DIF1#
OUT
0.7 V differential complementary clock output
24
DIF2
OUT
0.7 V differential true clock output
25
DIF2#
OUT
0.7 V differential complementary clock output
26
GND
PWR
Ground pin.
27
DIF3
OUT
0.7 V differential true clock output
28
DIF3#
OUT
0.7 V differential complementary clock output
29
DIF4
OUT
0.7 V differential true clock output
30
DIF4#
OUT
0.7 V differential complementary clock output
31
VDD
PWR
Power supply, nominal 3.3 V
32
DIF5
OUT
0.7 V differential true clock output
33
DIF5#
OUT
0.7 V differential complementary clock output
34
OE5#
IN
35
DIF6
OUT
0.7 V differential true clock output
36
DIF6#
OUT
0.7 V differential complementary clock output
37
OE6#
IN
Active low input for enabling DIF pair 5.
1 = disable outputs, 0 = enable outputs
Active low input for enabling DIF pair 6.
1 =disable outputs, 0 = enable outputs
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NB3N1900K
Table 7. PIN DESCRIPTION
Pin #
Pin Name
Pin Type
Description
38
DIF7
OUT
0.7 V differential true clock output
39
DIF7#
OUT
0.7 V differential complementary clock output
40
OE7#
IN
41
DIF8
OUT
0.7 V differential true clock output
42
DIF8#
OUT
0.7 V differential complementary clock output
43
OE8#
IN
44
GND
PWR
Ground pin.
45
VDD
PWR
Power supply, nominal 3.3 V
46
DIF9
OUT
0.7 V differential true clock output
47
DIF9#
OUT
0.7 V differential complementary clock output
48
OE9#
IN
49
DIF10
OUT
0.7 V differential true clock output
50
DIF10#
OUT
0.7 V differential complementary clock output
51
OE10#
IN
52
DIF11
OUT
0.7 V differential true clock output
53
DIF11#
OUT
0.7 V differential complementary clock output
54
OE11#
IN
55
DIF12
OUT
0.7 V differential true clock output
56
DIF12#
OUT
0.7 V differential complementary clock output
57
OE12#
IN
58
VDD
PWR
Power supply, nominal 3.3 V
59
DIF13
OUT
0.7 V differential true clock output
60
DIF13#
OUT
0.7 V differential complementary clock output
61
DIF14
OUT
0.7 V differential true clock output
62
DIF14#
OUT
0.7 V differential complementary clock output
63
GND
PWR
Ground pin.
64
DIF15
OUT
0.7 V differential true clock output
65
DIF15#
OUT
0.7 V differential complementary clock output
66
DIF16
OUT
0.7 V differential true clock output
67
DIF16#
OUT
0.7 V differential complementary clock output
68
VDD
PWR
Power supply, nominal 3.3 V
69
DIF17
OUT
0.7 V differential true clock output
70
DIF17#
OUT
0.7 V differential complementary clock output
71
DIF18
OUT
0.7 V differential true clock output
72
DIF18#
OUT
0.7 V differential complementary clock output
Active low input for enabling DIF pair 7.
1 = disable outputs, 0 = enable outputs
Active low input for enabling DIF pair 8.
1 = disable outputs, 0 = enable outputs
Active low input for enabling DIF pair 9.
1 = disable outputs, 0 = enable outputs
Active low input for enabling DIF pair 10.
1 = disable outputs, 0 = enable outputs
Active low input for enabling DIF pair 11.
1 = disable outputs, 0 = enable outputs
Active low input for enabling DIF pair 12.
1 = disable outputs, 0 = enable outputs
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NB3N1900K
Table 8. ABSOLUTE MAXIMUM RATINGS (Note 1)
Symbol
Max
Unit
VDDA
3.3 V Core Supply Voltage (Note 2)
Parameter
Conditions
Min
Typ
4.6
V
VDD
3.3 V Logic Supply Voltage (Note 2)
4.6
V
VIL
Input Low Voltage
VIH
Input High Voltage
Except for SMBus interface
VDD +
0.5
V
VIHSMB
Input High Voltage
SMBus clock and data pins
5.5
V
150
°C
GND −
0.5
V
Ts
Storage Temperature
TJ
Junction Temperature
125
°C
Tc
Case Temperature
130
°C
ESD
ESD protection
qJA
Thermal Resistance Junction−to−Ambient
qJC
Thermal Resistance Junction−to−Case
−65
Human Body Model
Still air
2000
V
18.1
°C/W
5.0
°C/W
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. Guaranteed by design and characterization, not tested in production.
2. Operation under these conditions is neither implied nor guaranteed.
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NB3N1900K
Table 9. ELECTRICAL CHARACTERISTICS − INPUT/SUPPLY/COMMON PARAMETERS
(VDD = VDDA = 3.3 V ±5%, TA = −10°C to +70°C), See Test Loads for Loading Conditions.
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
VIH
Input High Voltage
Single−ended inputs, except SMBus, low
threshold and tri−level inputs (Note 3)
2
VDD +
0.3
V
VIL
Input Low Voltage
Single−ended inputs, except SMBus, low
threshold and tri−level inputs (Note 3)
GND −
0.3
0.8
V
VIH_FS
(Note 4)
Input High Voltage
0.7
VDD +
0.3
V
VIL_FS
(Note 4)
Input Low Voltage
GND −
0.3
0.35
V
Single−ended inputs, VIN = GND, VIN = VDD
(Note 3)
−5
5
mA
VDD = 3.3 V, Bypass mode (Notes 3, 5 and 6)
33
400
MHz
VDD = 3.3 V, 100.00 MHz PLL mode (Note 5)
99
100.00
101
MHz
VDD = 3.3 V, 133.33 MHz PLL mode (Notes 5)
132.33
133.33
134.33
MHz
7
nH
IIN
Input Current
FIBYP
FIPLL
Input Frequency
FIPLL
LPIN
Pin Inductance
CIN
CINDIF_IN
Capacitance
(Note 3)
Logic Inputs, except CLK_IN (Note 3)
1.5
5
pF
CLK_IN differential clock inputs
(Notes 3 and 7)
1.5
2.7
pF
COUT
Output pin capacitance (Note 3)
6
pF
TSTAB
From VDD Power−Up and after input clock
stabilization or de−assertion of PD# to 1st
clock (Notes 3 and 5)
1.8
ms
Clk Stabilization
Input SS Modulation Frequency
Allowable Frequency (Triangular Modulation)
(Note 3)
30
33
kHz
tLATOE#
OE# Latency
DIF start after OE# assertion DIF stop after
OE# de−assertion (Note 3)
4
12
cycles
tDRVPD
Tdrive_PD#
DIF output enable after PD# de−assertion
(Note 3)
300
ms
tF
Tfall
Fall time of control inputs (Notes 3 and 5)
5
ns
tR
Trise
f
Rise time of control inputs (Notes 3 and 5)
5
ns
VILSMB
SMBus Input Low Voltage
(Note 3)
0.8
V
VIHSMB
SMBus Input High Voltage
(Note 3)
VDDSMB
V
VOLSMB
SMBus Output Low Voltage
@ IPULLUP (Note 3)
IPULLUP
SMBus Sink Current
@ VOL (Note 3)
4
VDDSMB
Nominal Bus Voltage
3 V to 5 V ±10% (Note 3)
2.7
tRSMB
SCL/SDA Rise Time
tFSMB
SCL/SDA Fall Time
Maximum SMBus operating frequency
(Notes 3 and 8)
fMAXSMB
SMBus Operating Frequency
2.1
0.4
V
mA
5.5
V
(Max VIL − 0.15) to (Min VIH + 0.15) (Note 3)
1000
ns
(Min VIH + 0.15) to (Max VIL − 0.15) (Note 3)
300
ns
100
kHz
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
3. Guaranteed by design and characterization, not tested in production.
4. 100M_133M# Frequency Select (FS).
5. Control input must be monotonic from 20% to 80% of input swing.
6. Fmax measured until output violates output duty cycle specifications and output VHigh, VLow specification.
7. CLK_IN input
8. The differential input clock must be running for the SMBus to be active.
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NB3N1900K
Table 10. ELECTRICAL CHARACTERISTICS − CLOCK INPUT PARAMETERS
(VDD = VDDA = 3.3 V ±5%, TA = −10°C to +70°C), See Test Loads for Loading Conditions.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VIHDIF
Input High Voltage − CLK_IN
(Note 9)
Differential inputs (single−ended
measurement)
600
1150
mV
VILDIF
Input Low Voltage − CLK_IN
(Note 9)
Differential inputs (single−ended
measurement)
VSS −
300
300
mV
VCOM
Input Common Mode Voltage −
CLK_IN (Note 9)
Common Mode Input Voltage
300
1000
mV
VSWING
Input Amplitude − CLK_IN (Note 9)
Peak to Peak value
300
1450
mV
dv/dt
Input Slew Rate − CLK_IN (Notes 9
and 10)
Measured differentially
0.4
8
V/ns
IIN
Input Leakage Current (Note 9)
VIN = VDD, VIN = GND
−5
5
mA
dtin
Input Duty Cycle (Note 9)
Measurement from differential waveform
45
55
%
Differential Measurement
0
125
ps
JDIFIn
Input Jitter − Cycle to Cycle (Note 9)
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
9. Guaranteed by design and characterization, not tested in production.
10. Slew rate measured through ±75 mV window centered around differential zero.
Table 11. ELECTRICAL CHARACTERISTICS − DIF 0.7 V CURRENT MODE DIFFERENTIAL OUTPUTS
(VDD = VDDA = 3.3 V ±5%, TA = −10°C to +70°C), See Test Loads for Loading Conditions
Symbol
dV/dt
DdV/dt
Parameter
Slew rate (Notes 11, 12 and 13)
Slew rate matching
(Notes 11, 12 and 14)
DTrf
Rise/Fall Time Matching
(Notes 11, 12 and 18)
VHigh
Voltage High (Note 11)
VLow
Voltage Low (Note 11)
Vmax
Max Voltage (Note 11)
Vmin
Min Voltage (Note 11)
Conditions
Min
Scope averaging on
1
Max
Unit
4
V/ns
Slew rate matching, Scope averaging on
20
%
Rise/fall matching, Scope averaging off
125
ps
Statistical measurement on single−ended
signal using oscilloscope math function.
(Scope averaging on)
660
850
−150
150
mV
1150
Measurement on single ended signal using
Absolute value. (Scope averaging off)
−300
Vswing (Notes 11 and 12)
Scope averaging off
300
Vcross_abs
Crossing Voltage (abs)
(Notes 11 and 15)
Scope averaging off
250
DVcross
Crossing Voltage (var)
(Notes 11 and 16)
Scope averaging off
Vswing
Typ
mV
mV
550
mV
140
mV
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
11. Guaranteed by design and characterization, not tested in production. IREF = VDD/(3xRREF). For RREF = 475 W (1%), IREF = 2.32 mA. IOH
= 6 x IREF and VOH = 0.7 V @ ZO = 50 W (100 W differential impedance).
12. Measured from differential waveform.
13. Slew rate is measured through the Vswing voltage range centered around differential 0 V. This results in a ±150 mV window around
differential 0 V.
14. Matching applies to rising and falling edge rate of differential waveform. It is measured using a ±75 mV window centered on the average cross
point where the clock rising meets clock# falling. The median cross point is used to calculate voltage thresholds that the oscilloscope uses
to calculate the slew rate. Measurement taken using a 100 W differential impedance 5” trace PCB.
15. Vcross is defined as voltage where Clock = Clock# measured on a component test board and only applies to the differential rising edge (i.e.
Clock rising and Clock# falling).
16. The total variation of all Vcross measurements in any particular system. Note that this is a subset of V_cross_min/max (V_cross absolute)
allowed. The intent is to limit Vcross induced modulation by setting V_cross_delta to be smaller than V_cross absolute.
17. Measured from single−ended waveform
18. Measured with scope averaging off, using statistics function. Variation is difference between min and max.
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NB3N1900K
Table 12. ELECTRICAL CHARACTERISTICS − CURRENT CONSUMPTION
(VDD = VDDA = 3.3 V ±5%, TA = −10°C to +70°C), See Test Loads for Loading Conditions
Symbol
Parameter
IDD3.3OP
Operating Supply Current (Note 19)
IDD3.3PDZ
Powerdown Current (Note 19)
Conditions
Min
Typ
Max
Unit
All outputs active @ 100.00 MHz,
CL = Full load
550
mA
All differential pairs tri−stated
36
mA
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
19. Guaranteed by design and characterization, not tested in production.
Table 13. ELECTRICAL CHARACTERISTICS − SKEW AND DIFFERENTIAL JITTER PARAMETERS
(VDD = VDDA = 3.3 V ±5%, TA = −10°C to +70°C), See Test Loads for Loading Conditions
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
tSPO_PLL
CLK_IN, DIF[x:0]
(Notes 20, 21, 23, 24 and 27)
Input−to−Output Skew in PLL mode nominal
value @ 25°C, 3.3 V
−100
100
ps
tPD_BYP
CLK_IN, DIF[x:0]
(Notes 20, 21, 22, 24 and 27)
Input−to−Output Skew in Bypass mode
nominal value @ 25°C, 3.3 V
2.5
4.5
ns
tDSPO_PLL
CLK_IN, DIF[x:0]
(Notes 20, 21, 22, 24 and 27)
Input−to−Output Skew Variation in PLL mode
across voltage and temperature
|100|
ps
tDSPO_BYP
CLK_IN, DIF[x:0]
(Notes 20, 21, 22, 24 and 27)
Input−to−Output Skew Variation in Bypass
mode across voltage and temperature
250
ps
tSKEW_ALL
DIF{x:0] (Notes 20, 21, 22 and 27)
Output−to−Output Skew across all outputs
(Common to Bypass and PLL mode)
65
ps
jpeak−hibw
PLL Jitter Peaking
(Notes 26 and 27)
HBW_BYP_LBW# = 1
0
2.5
dB
jpeak−lobw
PLL Jitter Peaking
(Notes 26 and 27)
HBW_BYP_LBW# = 0
0
2
dB
pllHIBW
PLL Bandwidth (Notes 27 and 28)
HBW_BYP_LBW# = 1
2
4
MHz
pllLOBW
PLL Bandwidth (Notes 27 and 28)
−250
HBW_BYP_LBW# = 0
0.7
1.4
MHz
Measured differentially, PLL Mode
45
50
55
%
Duty Cycle Distortion
(Notes 20 and 29)
Measured differentially, Bypass Mode
@ 100.00 MHz
−2
0
2
%
Jitter, Cycle to cycle
(Notes 20, 27 and 30)
PLL mode
50
ps
Additive Jitter in Bypass Mode
50
ps
tDC
Duty Cycle (Notes 20 and 27)
tDCD
tjcyc−cyc
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
20. Measured into fixed 2 pF load cap. Input to output skew is measured at the first output edge following the corresponding input.
21. Measured from differential cross−point to differential cross−point. This parameter can be tuned with external feedback path, if present.
22. All Bypass Mode Input−to−Output specs refer to the timing between an input edge and the specific output edge created by it.
23. This parameter is deterministic for a given device.
24. Measured with scope averaging on to find mean value. CLK_IN slew rate must be matched to DIF output slew rate.
25. t is the period of the input clock.
26. Measured as maximum pass band gain. At frequencies within the loop BW, highest point of magnification is called PLL jitter peaking.
27. Guaranteed by design and characterization, not tested in production.
28. Measured at 3 db down or half power point.
29. Duty cycle distortion is the difference in duty cycle between the output and the input clock when the device is operated in bypass mode.
@ 100.00 MHz.
30. Measured from differential waveform.
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NB3N1900K
Table 14. ELECTRICAL CHARACTERISTICS − PHASE JITTER PARAMETERS
(VDD = VDDA = 3.3 V ±5%, TA = −10°C to +70°C), See Test Loads for Loading Conditions.
Symbol
Parameter
tjphPCIeG1
Jitter, Phase
tjphQPI_SMI
tjphPCIeG1
tjphPCIeG2
tjphPCIeG3
tjphQPI_SMI
Typ
Max
Unit
36
86
ps (p−p)
PCIe Gen 2 Lo Band
10 kHz < f < 1.5 MHz (Note 32)
3
ps
(rms)
PCIe Gen 2 High Band
1.5 MHz < f < Nyquist (50 MHz)
(Note 32)
3.1
ps
(rms)
PCIe Gen 3
(PLL BW of 2−4 MHz, CDR = 10 MHz)
(Note 32)
1
ps
(rms)
QPI & SMI
(100.00 MHz or 133.33 MHz,
4.8 Gb/s, 6.4 Gb/s 12UI) (Note 34)
0.5
ps
(rms)
QPI & SMI
(100.00 MHz, 8.0 Gb/s, 12UI) (Note 34)
0.3
ps
(rms)
QPI & SMI
(100.00 MHz, 9.6 Gb/s, 12UI) (Note 34)
0.2
ps
(rms)
PCIe Gen 1 (Notes 32 and 33)
10
ps (p−p)
PCIe Gen 2 Lo Band
10 kHz < f < 1.5 MHz (Notes 32 and 35)
0.3
ps
(rms)
PCIe Gen 2 High Band
1.5 MHz < f < Nyquist (50 MHz)
(Notes 32 and 35)
0.7
ps
(rms)
PCIe Gen 3
(PLL BW of 2−4 MHz, CDR = 10 MHz)
(Notes 32 and 35)
0.3
ps
(rms)
QPI & SMI
(100.00 MHz or 133.33 MHz, 4.8 Gb/s,
6.4 Gb/s 12UI) (Notes 34 and 35)
0.3
ps
(rms)
QPI & SMI
(100.00 MHz, 8.0 Gb/s, 12UI) (Notes 34 and 35)
0.1
ps
(rms)
QPI & SMI
(100.00 MHz, 9.6 Gb/s, 12UI) (Notes 34 and 35)
0.1
ps
(rms)
PCIe Gen 1 (Notes 32 and 33)
tjphPCIeG2
tjphPCIeG3
Conditions (Notes 31 and 36)
Additive Phase Jitter, Bypass
mode
Min
Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product
performance may not be indicated by the Electrical Characteristics if operated under different conditions.
31. Applies to all outputs.
32. See http://www.pcisig.com for complete specs
33. Sample size of at least 100K cycles. This figures extrapolates to 108 ps pk−pk @ 1M cycles for a BER of 1−12.
34. Calculated from Intel−supplied Clock Jitter Tool v 1.6.3.
35. For RMS figures, additive jitter is calculated by solving the following equation: (Additive jitter)2 = (total jitter)2 - (input jitter)2
36. Guaranteed by design and characterization, not tested in production
http://onsemi.com
11
NB3N1900K
Table 15. CLOCK PERIODS − DIFFERENTIAL OUTPUTS WITH SPREAD SPECTRUM DISABLED
Measurement Window
1 Clock
1us
0.1s
−SSC
− ppm
−c2c jitter Short−Term Long−Term
Average
AbsPer
Average
Center
Min
Min
Min
SSC OFF Freq. MHz
0.1s
0.1s
1us
1 Clock
0 ppm
Period
Nominal
+ ppm Long−
Term Average
Max
+SSC
Short−Term
Average Max
+c2c jitter
AbsPer
Max
Unit
Notes
100.00
9.94900
9.99900
10.00000
10.00100
10.05100
ns
37,
38, 39
133.33
7.44925
7.49925
7.50000
7.50075
7.55075
ns
37,
38, 40
DIF
37. Guaranteed by design and characterization, not tested in production.
38. All Long Term Accuracy specifications are guaranteed with the assumption that the input clock complies with CK420BQ/CK410B+ accuracy
requirements (±100 ppm). The 9ZX21901 itself does not contribute to ppm error.
39. Driven by SRC output of main clock, 100.00 MHz PLL Mode or Bypass mode
40. Driven by CPU output of main clock, 133.33 MHz PLL Mode or Bypass mode
Table 16. CLOCK PERIODS − DIFFERENTIAL OUTPUTS WITH SPREAD SPECTRUM ENABLED
Measurement Window
1 Clock
1us
0.1s
0.1s
0.1s
1us
1 Clock
0 ppm
Period
Nominal
+ ppm
Long−Term
Average Max
+SSC
Short−Term
Average Max
+c2c jitter
AbsPer
Max
Unit
Notes
−SSC
− ppm
−c2c jitter Short−Term Long−Term
Average
AbsPer
Average
Center
Min
Min
Min
SSC ON Freq. MHz
99.75
9.94906
9.99906
10.02406
10.02506
10.02607
10.05107
10.10107
ns
41,
42, 43
133.00
7.44930
7.49930
7.51805
7.51880
7.51955
7.53830
7.58830
ns
41,
42, 44
DIF
41. Guaranteed by design and characterization, not tested in production.
42. All Long Term Accuracy specifications are guaranteed with the assumption that the input clock complies with CK420BQ/CK410B+ accuracy
requirements (±100 ppm). The 9ZX21901 itself does not contribute to ppm error.
43. Driven by SRC output of main clock, 100.00 MHz PLL Mode or Bypass mode
44. Driven by CPU output of main clock, 133.33 MHz PLL Mode or Bypass mode
Table 17. POWER MANAGEMENT TABLE
Inputs
PWRGD/PWRDN#
0
1
Control Bits/Pins
CLK_IN/CLK_IN# SMBus EN bit
X
Running
OE# Pin
DIF(5:12) /
DIF(5:12)#
Outputs
Other DIF/
DIF#
FB_OUT /
FB_OUT#
PLL
State
X
X
Hi−Z (Note 45) Hi−Z (Note 45)
Hi−Z (Note 45)
OFF
0
X
Hi−Z (Note 45) Hi−Z (Note 45)
Running
ON
1
0
Running
Running
Running
ON
1
1
Hi−Z (Note 45)
Running
Running
ON
45. Due to external pull down resistors, HI−Z results in Low/Low on the True/Complement outputs
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12
NB3N1900K
10 inches
Rs
Differential Zo
2pF
Rp
Rs
2pF
Rp
HCSL Output
Buffer
Figure 3. NB3N1900K Differential Test Loads
Table 18. DIFFERENTIAL OUTPUT TERMINATION TABLE
DIF Zo (W)
Iref (W)
Rs (W)
Rp (W)
100
475
33
50
85
412
27
42.2 or 43.2
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13
NB3N1900K
GENERAL SMBUS SERIAL INTERFACE INFORMATION FOR THE NB3N1900K
•
•
•
•
•
•
•
How to Write:
•
•
•
•
•
•
•
•
•
•
Controller (host) sends a start bit.
Controller (host) sends the write address XX(H)
Clock(device) will acknowledge
Controller (host) sends the beginning byte location = N
Clock(device) will acknowledge
Controller (host) sends the data byte count = X
Clock(device) will acknowledge
Controller (host) starts sending Byte N through Byte
N+X−1
Clock(device) will acknowledge each byte one at a
time
Controller (host) sends a Stop bit
•
•
•
Clock(device) will acknowledge
Controller (host) will send a separate start bit.
Controller (host) sends the read address YY(H)
Clock(device) will acknowledge
vclock will send the data byte count = X
Clock(device) sends Byte N + X −1
Clock(device) sends Byte 0 through byte X (if X(H) was
written to byte 8).
Controller (host) will need to acknowledge each byte
Controller (host) will send a not acknowledge bit
Controller (host) sends a Stop bit
Table 20. INDEX BLOCK READ OPERATION
Controller (Host)
Table 19. INDEX BLOCK WRITE OPERATION
T
Controller (Host)
T
Clock (Device)
starT bit
Clock (Device)
Slave Address XX(H)
starT bit
WR
WRite
Slave Address XX(H)
WR
ACK
WRite
Beginning Byte = N
ACK
ACK
Beginning Byte = N
RT
Repeat starT
ACK
Slave Address YY(H)
Data Byte Count = X
RD
ReaD
ACK
ACK
Beginning Byte N
ACK
Data Byte Count = X
ACK
O
O
Beginning Byte N
X Byte
O
O
ACK
O
O
Byte N + X - 1
O
O
X Byte
ACK
O
P
O
stoP bit
O
Note: XX(H) is defined by SMBus address select pins
Byte N + X - 1
How to Read:
•
•
•
•
Controller (host) will send start bit.
Controller (host) sends the write address XX(H)
Clock(device) will acknowledge
Controller (host) sends the beginning byte location = N
N
Not
acknowledge
P
stoP bit
Note: XX(H) is defined by SMBus address select pins
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14
NB3N1900K
Table 21. SMBusTable: PLL MODE, AND FREQUENCY SELECT REGISTER
Byte 0 Pin #
Name
Control Function
Type
Bit 7
5
PLL Mode 1
PLL Operating Mode Rd back 1
R
0
1
Bit 6
5
PLL Mode 0
PLL Operating Mode Rd back 0
R
Bit 5
72/71
DIF_18_En
Output Control overrides OE# pin
RW
Hi−Z
Enable
1
Bit 4
70/69
DIF_17_En
Output Control overrides OE# pin
RW
Hi−Z
Enable
1
Bit 3
67/66
DIF_16_En
Output Control overrides OE# pin
RW
Hi−Z
Enable
1
See PLL Operating Mode
Readback Table
Default
Latch
Latch
Bit 2
Reserved
0
Bit 1
Reserved
0
Bit 0
4
100M_133M#
Frequency Select Readback
R
133 MHz
100 MHz
Latch
0
1
Default
Table 22. SMBusTable: OUTPUT CONTROL REGISTER
Byte 1 Pin #
Name
Control Function
Type
Bit 7
39/38
DIF_7_En
Output Control overrides OE# pin
RW
1
Bit 6
35/36
DIF_6_En
Output Control overrides OE# pin
RW
1
Bit 5
32/33
DIF_5_En
Output Control overrides OE# pin
RW
1
Bit 4
29/30
DIF_4_En
Output Control overrides OE# pin
RW
1
Hi−Z
Enable
Bit 3
27/28
DIF_3_En
Output Control overrides OE# pin
RW
1
Bit 2
24/25
DIF_2_En
Output Control overrides OE# pin
RW
1
Bit 1
22/23
DIF_1_En
Output Control overrides OE# pin
RW
1
Bit 0
19/20
DIF_0_En
Output Control overrides OE# pin
RW
1
Table 23. SMBusTable: OUTPUT CONTROL REGISTER
Byte 2 Pin #
Name
Control Function
Type
0
1
Default
Bit 7
65/64
DIF_15_En
Output Control overrides OE# pin
RW
1
Bit 6
62/61
DIF_14_En
Output Control overrides OE# pin
RW
1
Bit 5
60/59
DIF_13_En
Output Control overrides OE# pin
RW
1
Bit 4
56/55
DIF_12_En
Output Control overrides OE# pin
RW
Bit 3
53/52
DIF_11_En
Output Control overrides OE# pin
RW
Bit 2
50/49
DIF_10_En
Output Control overrides OE# pin
RW
1
Bit 1
47/46
DIF_9_En
Output Control overrides OE# pin
RW
1
Bit 0
42/41
DIF_8_En
Output Control overrides OE# pin
RW
1
1
Hi−Z
Enable
1
Table 24. SMBusTable: OUTPUT ENABLE PIN STATUS READBACK REGISTER
Byte 3 Pin #
Name
Control Function
Type
Bit 7
57
OE_RB12
Real Time readback of OE#12
R
0
1
Real time
Default
Bit 6
54
OE_RB11
Real Time readback of OE#11
R
Real time
Bit 5
51
OE_RB10
Real Time readback of OE#10
R
Real time
Bit 4
48
OE_RB9
Real Time readback of OE#9
R
Real time
OE# pin Low OE# Pin High
Bit 3
43
OE_RB8
Real Time readback of OE#8
R
Bit 2
40
OE_RB7
Real Time readback of OE#7
R
Real time
Bit 1
37
OE_RB6
Real Time readback of OE#6
R
Real time
Bit 0
34
OE_RB5
Real Time readback of OE#5
R
Real time
http://onsemi.com
15
Real time
NB3N1900K
Table 25. SMBusTable: RESERVED REGISTER
Byte 4 Pin #
Name
Control Function
Type
0
1
Default
Bit 7
Reserved
0
Bit 6
Reserved
0
Bit 5
Reserved
0
Bit 4
Reserved
0
Bit 3
Reserved
0
Bit 2
Reserved
0
Bit 1
Reserved
0
Bit 0
Reserved
0
Table 26. SMBusTable: VENDOR & REVISION ID REGISTER
Byte 5 Pin #
Name
Control Function
Type
0
1
R
Default
Bit 7
−
RID3
X
Bit 6
−
RID2
Bit 5
−
RID1
R
Bit 4
−
RID0
R
Bit 3
−
VID3
R
−
−
1
Bit 2
−
VID2
R
−
−
1
R
X
REVISION ID
−
X
X
VENDOR ID
Bit 1
−
VID1
R
−
−
1
Bit 0
−
VID0
R
−
−
1
Type
0
1
Default
Table 27. SMBusTable: DEVICE ID
Byte 6 Pin #
Name
Control Function
Bit 7
−
Device ID 7 (MSB)
R
1
Bit 6
−
Device ID 6
R
1
Bit 5
−
Device ID 5
R
0
Bit 4
−
Device ID 4
R
Bit 3
−
Device ID 3
R
Bit 2
−
Device ID 2
R
0
Bit 1
−
Device ID 1
R
1
Bit 0
−
Device ID 0
R
1
Device ID is 120 decimal or
78 hex.
1
1
Table 28. SMBusTable: BYTE COUNT REGISTER
Byte 7 Pin #
Name
Control Function
Type
0
1
Default
Bit 7
Reserved
0
Bit 6
Reserved
0
Bit 5
Reserved
0
Bit 4
−
BC4
Bit 3
−
BC3
RW
RW
Writing to this register configures how
many bytes will be read back.
Bit 2
−
BC2
Bit 1
−
BC1
RW
Bit 0
−
BC0
RW
http://onsemi.com
16
RW
0
Default value is 8 hex, so 9
bytes (0 to 8) will be read
back by default.
1
0
0
0
NB3N1900K
Table 29. SMBusTable: RESERVED REGISTER
Byte 8 Pin #
Name
Control Function
Type
0
1
Default
Bit 7
Reserved
0
Bit 6
Reserved
0
Bit 5
Reserved
0
Bit 4
Reserved
0
Bit 3
Reserved
0
Bit 2
Reserved
0
Bit 1
Reserved
0
Bit 0
Reserved
0
DIF Reference Clock
Dimension or Value
Unit
L1 length, route as non−coupled 50 W trace (Figure 4)
Common Recommendations for Differential Routing
0.5 max
inch
L2 length, route as non−coupled 50 W trace (Figure 4)
0.2 max
inch
L3 length, route as non−coupled 50 W trace (Figure 4)
0.2 max
inch
Rs (Figure 4)
33
W
Rt (Figure 4)
49.9
W
2 min to 16 max
inch
1.8 min to 14.4 max
inch
0.25 to 14 max
inch
0.225 min to 12.6 max
inch
Down Device Differential Routing
L4 length, route as coupled microstrip 100 W differential trace (Figure 4)
L4 length, route as coupled stripline 100 W differential trace (Figure 4)
Differential Routing to PCI Express Connector
L4 length, route as coupled microstrip 100 W differential trace (Figure 5)
L4 length, route as coupled stripline 100 W differential trace (Figure 5)
L2
L1
Rs
L4
L4’
L2’
L1’
Rs
Rt
HCSL Output Buffer
Rt
L3’
L3
Figure 4. Down Device Routing
http://onsemi.com
17
PCI Express
Down Device
REF_CLK Input
NB3N1900K
L2
L1
Rs
L4
L4’
L2’
L1’
Rs
Rt
HCSL Output Buffer
Rt
L3’
PCI Express
Add−in Board
REF_CLK Input
L3
Figure 5. PCI Express Connector Routing
Table 30. ALTERNATIVE TERMINATION FOR LVDS AND OTHER COMMON DIFFERENTIAL SIGNALS (Figure 6)
Vdiff (V)
Vpp (V)
Vcm (V)
R1 (W)
0.45
0.22
1.08
0.58
0.28
0.6
0.60
0.3
1.2
R2 (W)
R3 (W)
R4 (W)
33
150
100
100
33
78.7
137
100
33
174
140
100
Note
Standard LVDS
R1a = R1b = R1
R2a = R2b = R2
L2
L1
R3
R1a
L4
R4
L4’
L2’
L1’
R1b
R2a
HCSL Output Buffer
R2b
L3’
Down Device
REF_CLK Input
L3
Figure 6. Alternate Termination for LVDS
Table 31. CABLE CONNECTED AC COUPLED APPLICATION (Figure 7)
Component
Value
R5a, R5b
8.2k 5%
R6a, R6b
1k 5%
Cc
0.1 mF
Vcm
0.350 V
Note
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18
NB3N1900K
3.3 V
R5a
R5b
R6a
R6b
Cc
L4
L4’
Cc
Figure 7. Cable−Connected AC Coupled Application
POWER FILTERING EXAMPLE
Ferrite Bead Power Filtering
Recommended ferrite bead filtering equivalent to the following:
600 W impedance at 100 MHz, ≤ 0.1 W DCR max., ≥ 800 mA current rating.
V3P3
Place at pin
FB1
R1
FERRITE
2.2
VDDA
C9
1 mF
R2
2.2
VDD for PLL
C7
0.1 mF
VDDR
C10
1 mF
VDD for Input Receiver
VDD
C8
0.1 mF
F C5
C5
0.1 mF
0.1 mF
C5
0.1 mF
C5
0.1 mF
VDD
C1
10 mF
C4
0.1 mF
C2
0.1 mF
C3
0.1 mF
Figure 8. Schematic Example of the NB3N1900K Power Filtering
Table 32. ORDERING INFORMATION
Package
Shipping†
NB3N1900KMNG
QFN−72
(Pb−Free)
168 Units / Tray
NB3N1900KMNTXG
QFN−72
(Pb−Free)
1000 / Tape & Reel
NB3N1900KMNTWG
QFN−72
(Pb−Free)
1000 / Tape & Reel
Device
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
NOTE: Pin 1 orientation for TWG Suffix is Quadrant 1, upper left; Pin 1 orientation for TXG Suffix is Quadrant 2, upper right
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19
NB3N1900K
PACKAGE DIMENSIONS
QFN72 10x10, 0.5P
CASE 485DK
ISSUE O
PIN ONE
LOCATION
ÉÉÉ
ÉÉÉ
ÉÉÉ
A B
D
L1
DETAIL A
ALTERNATE
CONSTRUCTIONS
E
TOP VIEW
MOLD CMPD
DETAIL B
ALTERNATE
CONSTRUCTION
(A3)
DETAIL B
0.10 C
0.08 C
A1
0.10
DETAIL A
M
D2
19
C A B
72X
36
10.30
6.25
SEATING
PLANE
C
SIDE VIEW
MILLIMETERS
MIN
MAX
0.80
1.00
0.00
0.05
0.20 REF
0.18
0.30
10.00 BSC
5.85
6.15
10.00 BSC
5.85
6.15
0.50 BSC
0.30
0.50
0.00
0.15
RECOMMENDED
SOLDERING FOOTPRINT*
A
NOTE 4
DIM
A
A1
A3
b
D
D2
E
E2
e
L
L1
ÉÉ
ÉÉ
EXPOSED Cu
0.15 C
0.15 C
L
L
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ASME Y14.5M, 1994.
2. CONTROLLING DIMENSIONS: MILLIMETERS.
3. DIMENSION b APPLIES TO PLATED
TERMINAL AND IS MEASURED BETWEEN
0.15 AND 0.25mm FROM THE TERMINAL TIP.
4. COPLANARITY APPLIES TO THE EXPOSED
PAD AS WELL AS THE TERMINALS.
72X
0.63
1
L
0.10
M
C A B
6.25
10.30
E2
PKG
OUTLINE
1
72
e
55
BOTTOM VIEW
72X
b
0.10
0.05
M
M
0.50
PITCH
72X
0.32
DIMENSIONS: MILLIMETERS
*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
C A B
C NOTE 3
Intel is a registered trademark of Intel Corporation.
PCIe and PCI−SIG are registered trademarks of PCI−SIG.
ON Semiconductor and the
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries.
SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed
at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation
or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets
and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each
customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended,
or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which
the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or
unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and
expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim
alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable
copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada
Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada
Email: [email protected]
N. American Technical Support: 800−282−9855 Toll Free
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Europe, Middle East and Africa Technical Support:
Phone: 421 33 790 2910
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Phone: 81−3−5817−1050
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20
ON Semiconductor Website: www.onsemi.com
Order Literature: http://www.onsemi.com/orderlit
For additional information, please contact your local
Sales Representative
NB3N1900K/D