netX 90 chip and evaluation board revisions

Q

How can I determine the revision of a netX 90 chip or a NHXH 90-JTAG evaluation board?

A

netx 90 Chip

The netX 90 chip revision can be distinguished by its datecode. The datecode is printed on the chip package, below the lettering "netX 90". Please refer to the figure 1 below.
The Datecode of final silicon chips consists of 4 digits. The first 2 digits specify the production year, the middle 2 digits the calendar week. Example Datecode 1910: Produced in CW 10 of year 2019.

The following netX 90 chip revisions exist:

Chip NameDescriptionEthernet PHY RevisionLot Trace Code LLDate Code YYWWROM Code Revisionseries product usage
netX 90 MPWA prototype chip with different functionality and pinout compared to netX 90 Rev.0 and Rev.1--

6420A
7420A

-no
netX 90 Rev.0

Untested final silicon, pilot series, pre-mass production
ROMcode limitation, please refer to the Errata

All chips feature the same unique chip ID, same console mode MAC address 00:02:a2:47:4e:2a

0x2LL = 11830 ≤ YYWW < 19100x0no
netX 90 Rev.1Final silicon product0x22 ≤ LL ≤ 71910 ≤ YYWW < 2111


0x1


yes
0x3 (PCN 200230)8 ≤ LL ≤ 232111 ≤ YYWW  2229
netX 90 Rev.2Mask ROM code change0x3LL ≥ 24YYWW ≥ 22290x2 (PCN 220275)yes


Figure 1: netX 90 chip marking

NXHX 90-JTAG evaluation board

Two different NXHX 90-JTAG boards exist. Board revision 1 and revisoion 2 (Figure 3) contain the netX 90 MPW chip and are not recommended for development.

The other board revisions have a different PCB layout  (Figure 2) and contain netX 90 Rev. 0, netX 90 Rev.1 and netX 90 Rev. 2 respectively.
The board revision number is printed on the white label with the QR code, please refer to Figure 1 and 2.


Board NameBoard RevisonnetX 90 chipFigureComment
NXHX 90-JTAGRev.1 and Rev.2netX 90 MPWFigure 3Do not use anymore for development purposes

NXHX 90-JTAG

Rev.3netX 90 Rev.0Figure 2Do not use anymore for development purposes
NXHX 90-JTAGRev.4netX 90 Rev.1Figure 2

SQI Flash: Winbond: W25Q32JVSSIQ (not supported anymore)

NXHX 90-JTAGRev.5netX 90 Rev.1Figure 2

SQI Flash: Macronix: MX25L3233FM2I-08 (recommended)

NXHX 90-JTAGRev.6netX 90 Rev.1
(new Ethernet PHY)
Figure 2

SQI Flash: Macronix: MX25L3233FM2I-08 (recommended)

NXHX 90-JTAGRev.7netX 90 Rev.2
(new ROM code)
Figure 2

SQI Flash: Macronix: MX25L3233FM2I-08 (recommended)



Figure 2: NXHX 90-JTAG Rev.3, Rev.4, Rev.5, Rev.6 and Rev.7


Figure 3: NXHX 90-JTAG Rev.1 and Rev.2 - netX 90 MPW: Do not use for development purposes anymore!