SFP(+) cape for the VCC-GND YD-RP2040 pending a few modifications.
- Remove D2, F1, U1, C1, C2
- Bridge D2 pins 1 and 2 with a 0Ohm 0603 resistor
U1 (ME6215C33M5G) and supporting components on the YD-RP2040 are replaced by U1 (AIC1221-33GY3TR) on the sfp-snoop
| YD-RP2040 | SFP (INF-8074i) | Transceivers |
|---|---|---|
| 7 (GP5 - USART1 RX) | 2 | Huawei SmartAX MA5671A, Alcatel-Lucent G-010S-P, BFW WAS-110 UART TX |
| 12 (GP8 - USART1 TX) | 3 | Nokia G-010S-A UART RX |
| 9 (GP6 - I2C1 SDA) | 4 | |
| 10 (GP7 - I2C1 SCL) | 5 | |
| 11 (GP9 - USART1 RX) | 6 | Nokia G-010S-A UART TX |
| 6 (GP4 - USART1 TX) | 7 | Huawei SmartAX MA5671A, Alcatel-Lucent G-010S-P, BFW WAS-110 UART RX |
| 5 (GP3) | 8 | |
| 29 (GP22) | 9 |
- Short JP1
- Short R10 jumper to pin 37 (GP23) for user button power switch, or populate R10 with a 10KOhm 0603 resistor to access RGB LED (GP23)
Total cost for single unit, incl. YD-RP2040 is around $5 USD.
| Ref. | Value | LCSC | Qty. |
|---|---|---|---|
| C1, C2 | 4.7uF | C1872 | 2 |
| C3, C6, C9, C11 | 0.1uF | C282519 | 4 |
| C4 | 150uF | C542620 | 1 |
| C7, C10 | 1uF | C59302 | 2 |
| C5, C8 | 0.01uF | C525264 | 2 |
| F1 | 2A | C261954 | 1 |
| J1 | SFP+ | C210158 | 1 |
| J1 (Optional) | SFP+ Cage | C7429382 | 1 |
| R1-R10 | 10KOhm | C25804 | 9 |
| U1 | AIC1221-33GY3TR | C211622 | 1 |
| U2 | AP2191WG-7 | C141321 | 1 |
| Ref. | Value | AliExpress | Qty. |
|---|---|---|---|
| J2, J3 sfp-snoop | Female | 2.54mm pitch, 20-pin Female Header | 1 |