SCAN928028TUF National Semiconductor, SCAN928028TUF Datasheet

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SCAN928028TUF

Manufacturer Part Number
SCAN928028TUF
Description
Manufacturer
National Semiconductor
Datasheet

Specifications of SCAN928028TUF

Number Of Elements
8
Input Type
CMOS/TTL
Operating Supply Voltage (typ)
3.3V
Output Type
Serializer
Transmission Data Rate
660Mbps
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
196
Number Of Receivers
1
Number Of Drivers
10
Lead Free Status / RoHS Status
Not Compliant

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© 2008 National Semiconductor Corporation
SCAN928028
8 Channel 10:1 Serializer with IEEE 1149.1 and At-Speed
BIST
General Description
The SCAN928028 integrates eight serializer devices into a
single chip. The SCAN928028 can simultaneously serialize
up to eight 10-bit data streams. The 10-bit parallel inputs are
LVTTL signal levels. The serialized outputs are LVDS signals
with extra drive current for point-to-point and lightly loaded
multidrop applications. Each serializer block in the
SCAN928028 operates independently by using strobes from
a single shared PLL.
The SCAN928028 uses a single +3.3V power supply with a
typical power dissipation of 740mW (3.3V / PRBS / 66 MHz).
Each serializer channel has a unique power down control to
further conserve power consumption.
For high-speed LVDS serial data transmission, line quality is
essential, thus the SCAN928028 includes an @SPEED TEST
function. Each Serializer channel has the ability to internally
generate a PRBS data pattern. This pattern is received by
specific deserializers (SCAN921224) which have the com-
plement PRBS verification circuit. The deserializer checks the
data pattern for bit errors and reports any errors on the test
verification pins on the deserializer.
For additional information - please see the Applications In-
formation section in this datasheet.
Block Diagram
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
200521
Features
IEEE 1149.1 (JTAG) Compliant and At-Speed BIST test
mode.
All 8 channels synchronous to one parallel clock rate, from
18 to 66 MHz
Duplicates function of multiple DS92LV1021 and '1023 10-
bit Serializer devices
Serializes from one to eight 10-bit parallel inputs into data
streams with embedded clock
Eight 5 mA modified Bus LVDS outputs that are capable
to drive double terminations
@Speed Test - PRBS generation to check LVDS
transmission path to SCAN921224, SCAN921226,
SCAN921260, or SCAN926260
On chip filtering for PLL
740mW typ power dissipation (loaded, PRBS, 66MHz,
3.3V)
High impedance inputs and outputs on power off
Single power supply at +3.3V (+/-10%)
196-pin LBGA package
Industrial temperature range operation: -40 to +85°C
20052115
www.national.com
May 2, 2008

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SCAN928028TUF Summary of contents

Page 1

... For additional information - please see the Applications In- formation section in this datasheet. Block Diagram TRI-STATE ® registered trademark of National Semiconductor Corporation. © 2008 National Semiconductor Corporation Features ■ IEEE 1149.1 (JTAG) Compliant and At-Speed BIST test mode. ■ ...

Page 2

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage ( LVCMOS/LVTTL Input −0. Voltage Bus LVDS Driver Output Voltage Bus LVDS Output Short Circuit Package Thermal Resistance  θ ...

Page 3

Symbol Parameter Bus LVDS DC Specifications Over recommended operating supply and temperature unless otherwise specified. Output Differential Voltage ( (DO-) Output Differential Voltage ΔV OD Unbalance V Offset Voltage OS ΔV Offset Voltage Unbalance OS I ...

Page 4

Serializer Timing Requirements for TCLK Over recommended operating supply and temperature ranges unless otherwise specified. (Notes 2, 3) Symbol Parameter t Transmit Clock Period TCP Transmit Clock High t TCIH Time Transmit Clock Low t TCIL Time TCLK Input Transition ...

Page 5

Symbol Parameter Conditions R C =10pF to GND L t Random Jitter RJIT R Deterministic Jitter, C =10pF to GND L t DJIT Figure 10 SCAN Circuitry Timing Requirements Over recommended operating supply and temperature ranges unless otherwise specified. Symbol ...

Page 6

FIGURE 2. Serializer Bus LVDS Output Load and Transition Times www.national.com FIGURE 3. Serializer Input Clock Transition Time FIGURE 4. Serializer Setup/Hold Times 6 20052104 20052105 20052106 ...

Page 7

FIGURE 5. Serializer Input Clock Transition Time TRI-STATE Test Circuit and Timing FIGURE 6. Serializer PLL lock Time and MS_PWDN TRI-STATE Delays FIGURE 7. Individual Channel Power up Time, t 20052107 20052130 ICR 7 20052108 www.national.com ...

Page 8

FIGURE 8. Serializer Delay FIGURE 9. SYNC Timing Delays FIGURE 10. Deterministic Jitter and Ideal Bit Position 8 20052109 20052112 20052111 ...

Page 9

Functional Description The SCAN928028 combines eight 10:1 serializers into a sin- gle chip. Each of the eight serializers accepts 10 or less data bits. The serializers then multiplex the data into a serial stream with embedded clock bits and route ...

Page 10

The user has the choice of allowing the deserializer to resyn- chronize to the data stream force synchronization by pulsing the Serializer SYNC pin. This scheme is left up to the user discretion. POWER-DOWN The Power-down state is ...

Page 11

TABLE 1. Truth Table (BIST mode) No BIST function performed when BIST_SEL (0:3) are set from even when BIST_ACT is set at HIGH. See (Note 4) BIST_ACT BIST_SEL <3> ...

Page 12

Functional Block Diagram www.national.com FIGURE 11. SCAN928028 Functional Block Diagram 12 20052101 ...

Page 13

Application Information USING THE SCAN928028 The SCAN928028 is an easy to use serializer that combines eight 10:1 serializers into a single chip with a maximum pay- load of 5.28Gbps. Each of the eight serializers accepts 10 or less data bits. ...

Page 14

A notch filter response is best to provide a stable VDD, suppression of the noise band, and good high-frequency response (clock fundamental). This may be accomplished with a pie filter (CRC ...

Page 15

Pin Diagram Top View of SCAN928028 (196-pin LBGA) 15 20052102 www.national.com ...

Page 16

Pin Descriptions Pin Number C7, C9, C10, D6, D7, D9, E5, E7, G7 C6, C8, C11, D5, D8, D10, E6, E8, F7 B12 BIST_ACT BIST_SEL A13, B13, D11, E11 M14 A2, A3, A12, B2, B3, C2, C4, D12, E1, E2, ...

Page 17

Pin Number Name G5, G8, G9, H5, H6, H8, H9, NC (1:12) J5, J6, J7, J9, J10 C1, D1 PGND D2, D3 PVDD N1, N2, N13, M1, M2, M12, PWDN (0:7) P13, P14 J8, K5, K7, K8, K9, L1, L2, ...

Page 18

... Physical Dimensions www.national.com inches (millimeters) unless otherwise noted Dimensions show in millimeters Order Number SCAN928028TUF (Tray) Order Number SCAN928028TUFX (Tape and Reel) NS Package Number UJB196A 18 ...

Page 19

Notes 19 www.national.com ...

Page 20

... For more National Semiconductor product information and proven design tools, visit the following Web sites at: Products Amplifiers www.national.com/amplifiers Audio www.national.com/audio Clock Conditioners www.national.com/timing Data Converters www.national.com/adc Displays www.national.com/displays Ethernet www.national.com/ethernet Interface www.national.com/interface LVDS www.national.com/lvds Power Management www.national.com/power Switching Regulators www.national.com/switchers LDOs www ...

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