DS32ELX0421SQ/NOPB National Semiconductor, DS32ELX0421SQ/NOPB Datasheet - Page 21

• Manufacturer Part Number: DS32ELX0421SQ/NOPB
• Description: IC SERIALIZER 312.5GBPS 48LLP
• Manufacturer: National Semiconductor

Specifications of DS32ELX0421SQ/NOPB

• Function: Serializer
• Data Rate: 3.125Gbps
• Input Type: LVDS
• Output Type: CML
• Number Of Inputs: 5
• Number Of Outputs: 2
• Voltage - Supply: 2.5V, 3.3V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 48-LLP
• Number Of Elements: 2
• Number Of Receivers: 2
• Number Of Drivers: 5
• Operating Supply Voltage (typ): 2.5/3.3V
• Differential Input High Threshold Voltage: 100mV
• Diff. Input Low Threshold Volt: -100mV
• Transmission Data Rate: 390.625MBps
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 48
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: DS32ELX0421SQ

Register Map
The register information for the serializer is shown in the table
below. Some registers have been omitted or marked as re-
00
01
02
03
04
(Hex)
Addr
GPIO0 Config
GPIO1 Config
GPIO2 Config
Device ID
Name
Reset
7:1
0
7:5
4
3:1
0
7:4
3:2
1
0
7:4
3:2
1
0
7:4
3:2
1
0
Bits
SMBus Address
Reserved
Reserved
Analog Disable
Reserved
Software Reset
GPIO0 Mode
GPIO0 R Enable R/W
Input Enable
Output Enable
GPIO1 Mode
GPIO1 R Enable R/W
Input Enable
Output Enable
GPIO2 Mode
GPIO2 R Enable R/W
Input Enable
Output Enable
Field
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
21
Default
57'h
01'b
01'b
01'b
1'b
1'b
1'b
0
0
0
0
0
0
0
0
0
0
0
served; these are for internal testing and should not be written
to. Some register bits require an override bit to be set before
they can be written to.
Some systems will use all 8 bits as the device ID. This
will shift the value from 57’h to AE’h
1: Disables analog blocks. Power save feature
1: Reset the device. Does not affect device ID.
0000: GP out register
0001: Link loss indicator
0011: TxCLKIN loss of signal
0100: TxCLKIN detect
All others: Reserved
00: Pullup/down disabled
01: Pulldown enabled
10: Pullup enabled
11: Reserved
0: Input buffer disabled
1: Input buffer enabled
0: OutputTtri-State™
1: Output enabled
0000: Power on reset
0001: GP out register
0010: PLL lock indicator
0011: TxIN0 loss of signal
0100: TxIN1 loss of signal
0101: TxIN2 loss of signal
0110: TxIN3 loss of signal
0111: TxIN4 loss of signal
All others: Reserverd
00: Pullup/down disabled
01: Pulldown enabled
10: Pullup enabled
11: Reserved
0: Input buffer disabled
1: Input buffer enabled
0: Output Tri-State™
1: Output enabled
0000: GP out register
0001: Always on clock out
0010: Parallel-to-serial clock out
0100: Digital clock out
All others: Reserverd
00: Pullup/down disabled
01: Pulldown enabled
10: Pullup enabled
11: Reserved
0: Input buffer disabled
1: Input buffer enabled
0: Output Tri-State™
1: Output enabled
Description
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