DATASHEET
8-OUTPUT SMALL FORM FACTOR PCIE GEN1-2-3 BUFFER
IDT6P61033
IDT®
8-OUTPUT SMALL FORM FACTOR PCIE GEN1-2-3 BUFFER 1
IDT6P61033 REV A 022513
Description
The IDT6P61033 is an 8-output very low power buffer for
100MHz PCIe Gen1, Gen2 and Gen3 applications with
integrated output terminations providing Zo=100. The
device has 8 output enables for clock management, and 3
selectable SMBus addresses.
Recommended Application
PCIe Gen1-2-3 Buffer for Freescale designs
Output Features
8 - 0.7V low-power HCSL-compatible (LP-HCSL) DIF
pairs w/Z
O
=100
Key Specifications
DIF cycle-to-cycle jitter <50ps
DIF output-to-output skew <50ps
DIF phase jitter is PCIe Gen1-2-3 compliant
Very low additive phase jitter in bypass mode
Features/Benefits
Integrated terminations provide 100 differential Zo;
reduced component count and board space
1.8V operation; minimal power consumption
Outputs can optionally be supplied from any voltage
between 1.05 and 1.8V; maximum power savings
OE# pins; support DIF power management
HCSL compatible differential input; can be driven by
common clock sources
LP-HCSL differential clock outputs; reduced power and
board space
Programmable Slew rate for each output; allows tuning
for various line lengths
Programmable output amplitude; allows tuning for
various application environments
Pin/software selectable PLL bandwidth and PLL Bypass;
minimize phase jitter for each application
Outputs blocked until PLL is locked; clean system
start-up
Software selectable 50MHz or 125MHz PLL operation;
useful for Ethernet applications
Configuration can be accomplished with strapping pins;
SMBus interface not required for device control
3.3V tolerant SMBus interface works with legacy
controllers
Space saving 48-pin 6x6mm VFQFPN; minimal board
space
Selectable SMBus addresses; multiple devices can
easily share an SMBus segment
Block Diagram
CLK_IN
DIF(7:0)
CONTROL
LOGIC
SADR_tri
CKPWRGD_PD#
ZDB PLL
8
OE(7:0)#
HIBW_BYPM_LOBW#
CLK_IN#
SDATA_3.3
SCLK_3.3
IDT6P61033
8-OUTPUT SMALL FORM FACTOR PCIE GEN1-2-3 BUFFER
IDT®
8-OUTPUT SMALL FORM FACTOR PCIE GEN1-2-3 BUFFER 2
IDT6P61033 REV A 022513
Pin Configuration
SMBus Address Selection Table
Power Management Table
Power Connections Frequency Select Table
PLL Operating Mode
DATA SHEET PINOUT
Driv e
Input
VDDIO
Input
N/A
N/A
Input
N/A
N/A
Ground
VDDIO
VDD
Input
Rs(ohm)
Input
VDDI O
Input
Rs
Rs
Input
Rs
Rs
Ground
VDDI O
VDD
Input
CL(pF)
Input
VDDIO
Input
2pF
2pF
Input
2pF
2pF
Ground
VDDIO
VDD
Input
Pin Type
IN
PWR
IN
OUT
OUT
IN
OUT
OUT
GND
PWR
PWR
IN
^CKPWRGD_PD#
VDDIO
vOE7#
DIF7#
DIF7
vOE6#
DIF6#
DIF6
GND
VDDIO
VDD1.8
vOE5#
Drive Rs(ohm) CL(pF) Pin Type 48 47 46 45 44 43 42 41 40 39 38 37 Pin Type CL(pF) Rs(ohm) Drive
2X 39ohm 5pF LATCHED IN vSADR_tri 1 36 DIF5# OUT 2pF Rs N/A
Input Input Input LATCHED IN ^vHIBW_BYPM_LOBW# 2 35 DIF5 OUT 2pF Rs N/A
FB FB FB DNC FB_DNC 3 34 vOE4# IN Input Input Input
FB FB FB DNC FB_DNC# 4 33 DIF4# OUT 2pF Rs N/A
VDD VDD VDD PWR VDDR1.8 5 32 DIF4 OUT 2pF Rs N/A
Input Input Input IN CLK_IN 6 31 VDDIO PWR VDDIO VDDIO VDDIO
Input Input Input IN CLK_IN# 7 30 VDDA1.8 PWR VDDA VDDA VDDA
Ground Ground Ground GND GNDR 8 29 GNDA GND Ground Ground Ground
Ground Ground Ground GND GNDDIG 9 28 v OE3# IN Input Input Input
SCLK SCLK S CLK IN SCLK_3.3 10 27 DIF3# OUT 2pF Rs N/A
SDATA SDATA SDATA I/O SDATA_3.3 11 26 DIF3 OUT 2pF Rs N/A
VDD VDD VDD PWR VDDDIG1.8 12 25 vOE2# IN Input Input Input
13 14 15 16 17 18 19 20 21 22 23 24
VDDIO
vOE0#
DIF0
DIF0#
vOE1#
DIF1
DIF1#
VDD1.8
VDDIO
GND
DIF2
DIF2#
^v prefix indicates internal 120KOhm pull up AND pull down resistor (biased to VDD/2)
v prefix indicates internal 120KOhm pull down resistor
^ prefix indicates internal 120KOhm pull up resistor
Pin Type
PWR
IN
OUT
OUT
IN
OUT
OUT
PWR
PWR
GND
OUT
OUT
CL(pF)
VDDIO
Input
2pF
2pF
Input
2pF
2pF
VDD
VDDIO
Ground
2pF
2pF
Rs(ohm)
VDDIO
Input
Rs
Rs
Input
Rs
Rs
VDD
VDDIO
Ground
Rs
Rs
Drive
VDDIO
Input
N/A
N/A
Input
N/A
N/A
VDD
VDDIO
Ground
N/A
N/A
6P61033
48-pin VFQFPN , 6x6 mm, 0.4mm pitch
^CKPWRGD_PD#
VDDIO
vOE7#
DIF7#
DIF7
vOE6#
DIF6#
DIF6
GND
VDDIO
VDD1.8
vOE5#
48 47 46 45 44 43 42 41 40 39 38 37
vSADR_tri 1 36 DIF5#
^vHIBW_BYPM_LOBW# 2 35 DIF5
FB_DNC 3 34 vOE4#
FB_DNC# 4 33 DIF4#
VDDR1.8 5 32 DIF4
CLK_IN 6 31 VDDIO
CLK_IN# 7 30 VDDA1.8
GNDR 8 29 GNDA
GNDDIG 9 28 vOE3#
SCLK_3.3 10 27 DIF3#
SDATA_3.3 11 26 DIF3
VDDDIG1.812 25vOE2#
13 14 15 16 17 18 19 20 21 22 23 24
VDDIO
vOE0#
DIF0
DIF0#
vOE1#
DIF1
DIF1#
VDD1.8
VDDIO
GND
DIF2
DIF2#
^v prefix indicates internal 120KOhm pull up AND pull down resistor (biased to VDD/2)
v prefix indicates internal 120KOhm pull down resistor
^ prefix indicates internal 120KOhm pull up resistor
6P61033
48-pin VFQFPN, 6x6 mm, 0.4mm pitch
SADR Address
0 1101011
M 1101100
1 1101101
x
x
x
State of SADR on first application of
CKPWRGD_PD#
+ Read/Write bit
True O/P Comp. O/P
0XXXLowLowOff
1 Running 0 X Low Low
On
1
1 Running 1 0 Running Running
On
1
1 Running 1 1 Low Low
On
1
OEx# Pin PLL
DIFx
CKPWRGD_PD#
SMBus
OEx bit
1. If Bypass mode is selected, the PLL will be off, and outputs will be running.
CLK_IN
Pin Number
VDD VDDIO GND
58
Input
receiver
analog
12 9 Di
g
ital Power
20, 31, 38
13, 21, 31,
39, 47
22, 29, 40 DIF outputs
30 29 PLL Analog
Description
FSEL
B
te3
4:3
CLK_IN
(
MHz
)
DIFx
(
MHz
)
00 (Default)
100.00 CLK_IN
01 50.00 CLK_IN
10 125.00 CLK_IN
11 Reserved Reserved
HiBW_BypM_LoBW# MODE
Byte1 [7:6]
Readback
Byte1 [4:3]
Control
0 PLL Lo BW 00 00
MBypass0101
1 PLL Hi BW 11 11
IDT6P61033
8-OUTPUT SMALL FORM FACTOR PCIE GEN1-2-3 BUFFER
IDT®
8-OUTPUT SMALL FORM FACTOR PCIE GEN1-2-3 BUFFER 3
IDT6P61033 REV A 022513
Pin Descriptions
PIN # PIN NAME TYPE DESCRIPTION
1 vSADR_tri
LATCHED
IN
Tri-level latch to select SMBus Address. See SMBus Address Selection Table.
2
^
vHIBW_BYPM_LOBW
#
LATCHED
IN
Trilevel input to select High BW, Bypass or Low BW mode.
See PLL Operating Mode Table for Details.
3 FB_DNC DNC
True clock of differential feedback. The feedback output and feedback input are
connected internally on this pin. Do not connect anything to this pin.
4 FB_DNC# DNC
Complement clock of differential feedback. The feedback output and feedback
input are connected internally on this pin. Do not connect anything to this pin.
5 VDDR1.8 PWR
1.8V power for differential input clock (receiver). This VDD should be treated as
an Analog power rail and filtered appropriately.
6 CLK_IN IN True Input for differential reference clock.
7 CLK_IN# IN Complementary Input for differential reference clock.
8 GNDR GND Analog Ground pin for the differential input (receiver)
9 GNDDIG GND Ground pin for digital circuitry
10 SCLK_3.3 IN Clock pin of SMBus circuitry, 3.3V tolerant.
11 SDATA_3.3 I/O Data pin for SMBus circuitry, 3.3V tolerant.
12 VDDDIG1.8 PWR 1.8V digital power (dirty power)
13 VDDIO PWR Power supply for differential outputs
14 vOE0# IN
Active low input for enabling DIF pair 0. This pin has an internal pull-down.
1 =disable outputs, 0 = enable outputs
15 DIF0 OUT Differential true clock output
16 DIF0# OUT Differential Complementary clock output
17 vOE1# IN
Active low input for enabling DIF pair 1. This pin has an internal pull-down.
1 =disable outputs, 0 = enable outputs
18 DIF1 OUT Differential true clock output
19 DIF1# OUT Differential Complementary clock output
20 VDD1.8 PWR Power supply, nominal 1.8V
21 VDDIO PWR Power supply for differential outputs
22 GND GND Ground pin.
23 DIF2 OUT Differential true clock output
24 DIF2# OUT Differential Complementary clock output
25 vOE2# IN
Active low input for enabling DIF pair 2. This pin has an internal pull-down.
1 =disable outputs, 0 = enable outputs
26 DIF3 OUT Differential true clock output
27 DIF3# OUT Differential Complementary clock output
28 vOE3# IN
Active low input for enabling DIF pair 3. This pin has an internal pull-down.
1 =disable outputs, 0 = enable outputs
29 GNDA GND Ground pin for the PLL core.
30 VDDA1.8 PWR 1.8V power for the PLL core.
31 VDDIO PWR Power supply for differential outputs
32 DIF4 OUT Differential true clock output
33 DIF4# OUT Differential Complementary clock output
34 vOE4# IN
Active low input for enabling DIF pair 4. This pin has an internal pull-down.
1 =disable outputs, 0 = enable outputs
35 DIF5 OUT Differential true clock output
36 DIF5# OUT Differential Complementary clock output
37 vOE5# IN
Active low input for enabling DIF pair 5. This pin has an internal pull-down.
1 =disable outputs, 0 = enable outputs
38 VDD1.8 PWR Power supply, nominal 1.8V

6P61033NDGI8

Mfr. #:
Manufacturer:
IDT
Description:
Buffers & Line Drivers 8-Output PCIe Gen1 2,3 Freescale Buffer
Lifecycle:
New from this manufacturer.
Delivery:
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