netX 90 chip and evaluation board revisions
How can I determine the revision of a netX 90 chip or a NHXH 90-JTAG evaluation board?
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 Name | Description | Ethernet PHY Revision | Lot Trace Code LL | Date Code YYWW | ROM Code Revision | series product usage |
|---|---|---|---|---|---|---|
| netX 90 MPW | A prototype chip with different functionality and pinout compared to netX 90 Rev.0 and Rev.1 | - | - | 6420A | - | no |
| netX 90 Rev.0 | Untested final silicon, pilot series, pre-mass production All chips feature the same unique chip ID, same console mode MAC address 00:02:a2:47:4e:2a | 0x2 | LL = 1 | 1830 ≤ YYWW < 1910 | 0x0 | no |
| netX 90 Rev.1 | Final silicon product | 0x2 | 2 ≤ LL ≤ 7 | 1910 ≤ YYWW < 2111 |
| yes |
| 0x3 (PCN 200230) | 8 ≤ LL ≤ 23 | 2111 ≤ YYWW ≤ 2229 | ||||
| netX 90 Rev.2 | Mask ROM code change | 0x3 | LL ≥ 24 | YYWW ≥ 2229 | 0x2 (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 Name | Board Revison | netX 90 chip | Figure | Comment |
|---|---|---|---|---|
| NXHX 90-JTAG | Rev.1 and Rev.2 | netX 90 MPW | Figure 3 | Do not use anymore for development purposes |
NXHX 90-JTAG | Rev.3 | netX 90 Rev.0 | Figure 2 | Do not use anymore for development purposes |
| NXHX 90-JTAG | Rev.4 | netX 90 Rev.1 | Figure 2 | SQI Flash: Winbond: W25Q32JVSSIQ (not supported anymore) |
| NXHX 90-JTAG | Rev.5 | netX 90 Rev.1 | Figure 2 | SQI Flash: Macronix: MX25L3233FM2I-08 (recommended) |
| NXHX 90-JTAG | Rev.6 | netX 90 Rev.1 (new Ethernet PHY) | Figure 2 | SQI Flash: Macronix: MX25L3233FM2I-08 (recommended) |
| NXHX 90-JTAG | Rev.7 | netX 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!