DATASHEET
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
OE(8,6,4,2)#
DFB_OUT
Z-PLL
(SS Compatible)
DIF_IN
DIF_IN#
HIBW_BYPM_LOBW#
100M_133M#
CKPWRGD/PD#
SMB_A0_tri
SMB_A1_tri
DIF(11:0)
Logic
SMBDAT
SMBCLK
IREF
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
1
9ZX21200
REV D 041513
VDD
DIF_8
DIF_8#
vOE8#
DIF_9
DIF_9#
VDD
VDD
GND
DIF_10
DIF_10#
DIF_11
DIF_11#
VDDA
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
VDD
DIF_3#
DIF_3
vOE2#
DIF_2#
DIF_2
VDD
VDD
GND
DIF_1#
DIF_1
DIF_0#
DIF_0
GND
DIF_7#
DIF_7
vOE6#
DIF_6#
DIF_6
GND
VDD
DIF_5#
DIF_5
vOE4#
DIF_4#
DIF_4
GND
DFB_OUT
GNDA
IREF
100M_133M#
HIBW_BYPM_LOBW
CKPWRGD_PD#
GND
VDDR
DIF_IN
DIF_IN#
SMB_A0_tri
SMBDAT
SMBCLK
SMB_A1_tri
DFB_OUT#
Notes: Pins with ^ prefix have internal 120K pullup
Pins with v prefix have internal 120K pulldown.
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
2
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
3
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
4
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
5
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
V/ns
%
260
13
2
1.3
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
6
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
7
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
3.1
1
0.2
9ZX21200 Differential Test Loads
Rs
DIF Zo=85ohms,10"
2pF
Rs
Rp
2pF
Rp
HCSL Output
Buffer
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
8
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
9
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
•
•
•
•
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•
•
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•
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•
•
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•
•
•
IDT (Slave/Receiver)
IDT (Slave/Receiver)
ACK
ACK
ACK
ACK
ACK
ACK
ACK
O
Data Byte Count=X
O
O
Beginning Byte N
ACK
O
O
O
Byte N + X - 1
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
10
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
133MHz
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
11
9ZX21200
100MHz
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
12
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
DIF Reference Clock
Common R ecommendations for Differential Rout ing
L1 length, route as non-coupled 50ohm trace
L2 length, route as non-coupled 50ohm trace
L3 length, route as non-coupled 50ohm trace
Rs (100 ohm differential traces)
Rs (85 ohm differential traces)
Dimension or Value
0.5 max
0.2 max
0.2 max
33
27
Unit
inch
inch
inch
ohm
ohm
Figure
1
1
1
1
1
Down Device Differential Routing
L4 length, route as coupled microstrip 100ohm differential trace
L4 length, route as coupled stripline 100ohm differential trace
2 min to 16 max
1.8 min to 14.4 max
inch
inch
1
1
Differential Routing to PCI Express Connector
L4 length, route as coupled microstrip 100ohm differential trace
L4 length, route as coupled stripline 100ohm differential trace
0.25 to 14 max
0.225 min to 12.6 max
inch
inch
2
2
Figure 1: Down Device Routing
L2
L1
Rs
L4
L4'
L2'
L1'
Rs
HCSL Output Buffer
Rt
Rt
L3'
PCI Express
Down Device
REF_CLK Input
L3
Figure 2: PCI Express Connector Routing
L2
L1
Rs
L4
L4'
L2'
L1'
HCSL Output Buffer
Rs
Rt
Rt
L3'
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
PCI Express
Add-in Board
REF_CLK Input
L3
13
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
Alternative Termination for LVDS and other Common Differential Signals (figure 3)
Vdiff
Vp-p
Vcm
R1
R2
R3
R4
Note
0.45v
0.22v
1.08
33
150
100
100
0.58
0.28
0.6
33
78.7
137
100
0.80
0.40
0.6
33
78.7
none
100
ICS874003i-02 input compatible
0.60
0.3
1.2
33
174
140
100
Standard LVDS
R1a = R1b = R1
R2a = R2b = R2
Figure 3
L2
L1
R3
R1a
L4
R4
L4'
L2'
L1'
R1b
HCSL Output Buffer
R2a
R2b
L3'
Down Device
REF_CLK Input
L3
Cabl e Connected AC Coupled Application (figure 4)
Component
Value
Note
R5a, R5b
8.2K 5%
R6a, R6b
1K 5%
Cc
0.1 µF
Vcm
0.350 volts
Figure 4
3.3 Volts
R5a
R5b
R6a
R6b
Cc
L4
L4'
Cc
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
14
PCIe Device
REF_CLK Input
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
Seating Plane
A1
Index Area
N
1
2
(Ref)
ND & NE
Even
(ND-1)x e
(Ref)
L
A3
e
N
Anvil
Singulation
1
(Typ)
If ND & NE
2
are Even
2
E
-- or -Top View
E2
Sawn
Singulation
A
D
0.08 C
Part / Order Number
9ZX21200AKLF
9ZX21200AKLFT
9ZX21200BKLF
9ZX21200BKLFT
Shipping Package
Trays
Tape and Reel
Trays
Tape and Reel
(NE-1)x e
(Ref)
2
(Ref)
ND & N E
Odd
b
e
Thermal Base
D2
2
D2
C
Package
56-pin VFQFPN
56-pin VFQFPN
56-pin VFQFPN
56-pin VFQFPN
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
E2
Temperature
0 to +70°C
0 to +70°C
0 to +70°C
0 to +70°C
15
Difference
W/O Byte 0 PLL Control
With Byte 0 PLL Mode
Control
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
IDT® 12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
16
9ZX21200
REV D 041513
9ZX21200
12-OUTPUT DIFFERENTIAL Z-BUFFER FOR PCIE GEN3 AND QPI
SYNTHESIZERS
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