Specifications

MCP7F00-A0xxRyyz 100GbE QSFP28 to 4x25GbE 4xSFP28 DAC Product Specifications

Absolute maximum ratings are those beyond which the device may be damaged.

Parameter

Min

Max

Units

Supply voltage

-0.3

3.6

V

Data input voltage

-0.3

3.6

V

Control input voltage

-0.3

3.6

V

This table shows the environmental specifications for the product.

Parameter

Min

Max

Units

Storage temperature

-40

85

°C

This section shows the range of values for normal operation.

Parameter

Min

Typ

Max

Units

Supply voltage (Vcc)

3.135

3.3

3.465

V

Power consumption

---

---

0.1

W

Operating case temperature

0

70

°C

Operating relative humidity

5

85

%

Parameter

Min

Typ

Max

Units

Characteristic Impedance

90

100

110

Ω

Time propagation delay1

---

---

4.5

ns/m

1 Informative

Note: Minimum insertion loss for up to 1m cable length is 6dB @ 12.89GHz.

Page 00h/
Dec. Byte Address

Register Name

Description

0

Identifier

11h: QSFP28 side of the cable

1

Status

06h: Support for SFF-8436 Rev. 2.0

128

Identifier

11h: QSFP28

130

Connector

23h: Direct attach assemblies with no separable interfaces

146

Length

Length in units of 1 m of direct attach copper cable

147

Device technology

A0h: Un-equalized copper cable (passive)

148-163

Vendor name

NVIDIA: ASCII

165-167

QSFP vendor IEEE number

00-02-C9: NVIDIA OUI.

168-183

Part number

MCP7F00-A0XXXXXX: Part number per backshell label (ASCII)

184-185

Product revision

ZZ: Revision per backshell label (ASCII)

186

Attenuation 2.5GHz

Typical attenuation measured during production test, in 1dB. [dB]

187

Attenuation 5GHz

188

Attenuation 7GHz

189

Attenuation 12.9GHz

190

Max case temperature

46h: Support for 70ºC

192

Link codes

0Bh: CA-L (Cable Assembly FEC)
0Dh: CA-N (Cable Assembly No-FEC)

196-217

Serial number

MTYYWWXXSSSSS: Serial number per backshell label (ASCII). Refer to Back-Shell Label Legend table.

236

Length 0.1m

Total cable length is the sum of byte 146 for number of meters and byte 236 for 0.1m.

Values:
00h: 0m

09h: 0.9m

Examples:
2.5m: Byte 146 = 02h, Byte 236 = 05h
2.25m: Byte 146 = 02h, Byte 236 = 03h

237

AWG

DAC cable AWG information.
18h: AWG=24
19h: AWG=25
1Ah: AWG=26
1Ch: AWG=28
1Eh: AWG=3020h: AWG=32

Page 00h/
Dec. Byte Address

Register Name

Description

0-1

Identifier

03: SFP/SFP+/SFP28

1

Extended Identifier

04h: 2-wire interface

2

Connector

23h: Direct attach assemblies with no separable interfaces

8

Cable Technology

04h: Passive cable

18

Length

Length in units of 1 m of direct attach copper cable

20-35

Vendor name

NVIDIA: ASCII

36

Link codes

0Bh: CA-L (Cable Assembly FEC)
0Dh: CA-N (Cable Assembly No-FEC)

37-39

QSFP vendor IEEE number

00-02-C9: NVIDIA OUI.

40-55

Part number

MCP7F00-A0XXXXXX: Part number per backshell label (ASCII)

57-59

Product revision

ZZ: Revision per backshell label (ASCII)

68-91

Serial number

MTYYWWXXSSSSS: Serial number per backshell label. Refer to Backshell Label Legend table.

94

Compliance

08h: SFF-8472 Compliance

108

Length 0.1m

Total cable length is the sum of byte 18 for number of meters and byte 108 for 0.1m.

Values:
00h: 0m
05h: 0.5m

109

AWG

DAC cable AWG information.
18h: AWG=24
19h: AWG=25
1Ah: AWG=26
1Ch: AWG=28
1Eh: AWG=30
20h: AWG=32

Please note that the MCP7F00 is a passive cable, and therefore has no Digital Diagnostic Monitoring (DDM) functions implemented. However, the SFP ends are considered compliant with SFF-8472 to enable the host system to read device declarations including interconnect type, link code, and cable length. The compliance and DDM declarations are interpreted as follows:

Read address 94 = 08h. This declares SFF-8472 rev. 12.3 compliance.

Read address 92 bit 6 = 0. This declares that DDM is NOT implemented. This declaration contradicts the wording of SFF-8472 rev. 12.3, but it prevents the host system from hanging if attempting to access the unimplemented upper page A2h.

OPN

AWG

Single Cable Diameter

Minimum Bend Radius

Length Tolerance

Cable Color

MCP7F00-A02AR30L

30

4.5 +/-0.2 (LSZH)

Single bend: 21mm

Repeated bend: 45mm

+/-25mm

Black

MCP7F00-A003R30L

MCP7F00-A001R30N

MCP7F00-A01AR30N

MCP7F00-A002R30N

MCP7F00-A03AR26L

26

5.8 +0.3/
-1.0mm

Single bend: 29mm

Repeated bend: 58mm

+/-50mm

MCP7F00-A005R26L

MCP7F00-A02AR26N

MCP7F00-A003R26N

Pull-tab Colors

Single QSFP28 Side

Black

SFP28 Side

Channel 1: Green

Channel 3: Yellow

Promo Green

Success Yellow

Hex = #6faa55

Hex = #fffbe2

RGB = 111, 170, 85

RGB = 255, 251, 226

CMYK = 52, 0, 86, 0

CMYK = 1, 2, 20, 0

Pantone = 368 Coated / 368 Uncoated

Pantone = 7499 Coated / 7499 Uncoated

Channel 2: Blue

Channel 4:Red

Nice Blue

Notification Red

Hex = #3b5998

Hex = #f03d25

RGB = 59, 89, 152

RGB = 240, 61, 37

CMYK = 86, 64, 10, 0

CMYK = 0, 91, 98, 0

Pantone = 660 Coated / 661 Uncoated

Pantone = 7417 Coated / 7417 Uncoated

Mechanical Dimensions QSFP28 End

image2021-9-14_9-30-18.png

Mechanical Dimensions SFP28 End

image2021-9-14_9-29-52.png

Mechanical Dimensions, Overall

image2021-9-14_9-29-45.png

Connectivity Schematic

100Gb/s Side

4x25Gb/s Side

Port 1 Green

TX1

RX1

RX1

TX1

Port 2 Blue

TX2

RX1

RX2

TX1

Port 3 Yellow

TX3

RX1

RX3

TX1

Port 4 Red

TX4

RX1

RX4

TX1

Cable Length Definition

image2021-9-14_9-29-36.png

The following label is applied on the cable’s backshell:

Backshell Label QSFP28

image2021-9-14_9-29-1.png

(sample illustration)

Backshell Label SFP28

image2021-9-14_9-29-20.png

(sample illustration)

Backshell Label Legend

Symbol

Meaning

Notes

PN – Part Number

xx

Length

Meter

R

Rainbow

Colored pull tabs

yy

Cable gauge

American wire gauge

z

Link codes

L: CA-L (Cable Assembly FEC)
N: CA-N (Cable Assembly No-FEC)

SN – Serial Number

MN

Manufacturer name

2 characters MT

YY

Year of manufacturing

2 digits

WW

Week of manufacturing

2 digit

MS

Manufacturer site

2 characters

XXXXX

Serial number

5 digits for serial number. Reset at start of week to 00001.

Miscellaneous

ZZ

Revision

2 alpha-numeric characters

Xm

Cable length

Meter

XXAWG

Cable gauge

American wire gauge

YYYY-MM-DD

Year-month-day

Year 4 digits, month 2 digits, day 2 digits

COO

Country of origin

E.g. China or Malaysia

image2021-9-14_9-32-21.png

Quick response code

Serial number

The cable is marked with a 1-dimensional bar code and the following certification marks:

Cable Jacket Label

image2021-9-14_9-34-25.png

(sample illustration)

Note: The serial number and barcode are for NVIDIA internal use only.

The following labels are applied on the cable’s jacket at the tail:

Splitter Copper Cable Labels Identifying the Tails

image2021-9-14_9-34-35.png

(sample illustration)

  • Safety: CB, UL, CE

  • EMC: CE, FCC, ICES, RCM, VCCI

Ask your FAE for a zip file of the certifications for this product.

This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

© Copyright 2023, NVIDIA. Last updated on May 22, 2023.