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8.0 KiB
8.0 KiB
2M-PCB23-V3.1
Brands
| Brand | Type | Managed | PCB | Flash | Chip RTL |
|---|---|---|---|---|---|
| keepLINK | KP-9000-9XHML-X | Yes | 2M-PCB23-V3.1 | 2M | 8273N + 8224N |
PCB
Port overview
┌─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ ┌──────────┐ │
│ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ ┌─────────┐ │ SFP (J4) │ │
│ │ RJ45 │ │ RJ45 │ │ RJ45 │ │ RJ45 │ │ RJ45 │ │ RJ45 │ │ RJ45 │ │ RJ45 │ │ PORT 9 │ │
│ │ PORT 1 │ │ PORT 2 │ │ PORT 3 │ │ PORT 4 │ │ PORT 5 │ │ PORT 6 │ │ PORT 7 │ │ PORT 8 │ │ MAC 8 │ O (PWR) │
│ O │ MAC 0 │ │ MAC 1 │ │ MAC 2 │ │ MAC 3 │ │ MAC 4 │ │ MAC 5 │ │ MAC 6 │ │ MAC 7 │ │ SerDes 1 │ O (SFP) │
│ RST └─────────┘ └─────────┘ └─────────┘ └─────────┘ └─────────┘ └─────────┘ └─────────┘ └─────────┘ └──────────┘ │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
Connectors
J4 SFP PINs |
Signal | Component | GPIO | Notes |
|---|---|---|---|---|
| 2 | TX_FAULT | --- | ||
| 3 | TX_DISABLE | --- | Pull down - 0R | |
| 4 | MODDEF2 – SDA | b-r273 | GPIO39-SDA4 | |
| 5 | MODDEF1 – SCL | b-r274 | GPIO40-SCL3 | |
| 6 | MODDEF0 – PRESENT | B-R275 | GPIO38 | |
| 7 | RATE SEL | --- | ||
| 8 | LOS | B-R276 | GPIO38 | |
| 9 | TO? | --- |
Note: component numbering <L>-<REFDES>-<SIDE>
- L: Layer, T=Top, B=Bottom
- REFDEES: full silkscreen like
R123 - SIDE: Side of the component. when the rj45 are facing towards you are you can read the silkscreen normal. L = Left, R=right, B=bottom, T=top or P with a pin number.
T8, serial console
T9 pin |
GPIO | Signal |
|---|---|---|
| 1 | GPIO31 | U0TXD (Output) |
| 2 | GND | PWR |
| 3 | GPIO32 | U0RXD (Input) |
| 4 | 3V3 | PWR |
T7, Slave Interface
T7 pin |
what | Signal | Components |
|---|---|---|---|
| 1 | Slave Interface | Slave SCK/SCL/MDC/EE_SCL | U7-6 |
| 2 | GND | ||
| 3 | Slave Interface | Slave SDI/SDA/MDIO/EE_SDA | U7-5 |
| 4 | 3V3 | ||
| 5 | GPIO? | ||
| 6 | GPIO? |
U7 can be a standard I2C eeprom memory, like 24LC32.
The Slave Interface allows an extenal host to controll the SOC even if the internal MCU is used.
Depending on the IF_SEL bootstrap resistors, this can me I2C, SPI or SMI.
On this device it is I2C on address 0b1011100 or 0x5c (7-bit notation).
- I2c Read: must be a write_read opperation
<Dev-ADDR><RegAddr15:8><RegAddr7:0><DevAddr><Data7:0><Data15:8><Data23:16><Data31:24>. - I2c Write:
<Dev-ADDR><RegAddr15:8><RegAddr7:0><DevAddr><Data7:0><Data15:8><Data23:16><Data31:24>.
Example register 0x0004 return chip id 0x00, 0x00, 0x72, 0x83 = 0x83720000.
T9
T9 SMI |
Signal | Component | GPIO | Notes |
|---|---|---|---|---|
| 1 | MDO | SMI-MDO | GPIO41 | |
| 2 | GND | PWR | ||
| 3 | MDC | SMI-MDC | GPio40 |
T10
T10 pin |
what | Signal |
|---|---|---|
| 1 | GPIO49 | |
| 2 | GPIO47 | |
| 3 | 3V3 | |
| 4 | GPIO48 | |
| 5 | GND | |
| 6 | GPIO46 |
Reset ciruit
Reset-line found at T-D6-L, T-R83, T-R97, T-R94, T-R93 active-low.
GPIO
| HEX VAL. | GPIO | Component | What | GPIO | Component | What | |
|---|---|---|---|---|---|---|---|
| 00000001 | GPIO00 | T-R34-R, P1-LED-YL | ? | GPIO32 | B-r126-r | U0RXD | |
| 00000002 | GPIO01 | T-R99-R, P1-LED-GR | ? | GPIO33 | |||
| 00000004 | GPIO02 | ? | GPIO34 | B-R172, To RTL8224 | SMI-MDC0 | ||
| 00000008 | GPIO03 | T-R113-R, P2-LED-GR | ? | GPIO35 | B-R173, To RTL8224 | SMI-MDIO0 | |
| 00000010 | GPIO04 | T-R115-R, P3-LED-YL | ? | GPIO36 | |||
| 00000020 | GPIO05 | T-R117-R, P3-LED-GR | ? | GPIO37 | To RTL8224 ?? | Already driver low | |
| 00000040 | GPIO06 | ? | GPIO38 | sfp-6 via B-R275, sfp-8 via B-R276 | SFP-PRESENT | ||
| 00000080 | GPIO07 | ? | GPIO39 | sfp-4, b-r273, B-r143 | I2C4-SDA | ||
| 00000100 | GPIO08 | GPIO40 | T9-2, sfp-5 b-r274, B-r146 | I2C3-SCL | |||
| 00000200 | GPIO09 | LEDx1 | GPIO41 | T9-1, B-r143 | |||
| 00000400 | GPIO10 | GPIO42 | U6?8?-P6, T-R | SPI-MEMORY, CLK | |||
| 00000800 | GPIO11 | LEDx1 | GPIO43 | U6?8?-P5, T-R | SPI-MEMORY, DI,IO0 | ||
| 00001000 | GPIO12 | LEDx1 | GPIO44 | U6?8?-P2, T-R | SPI-MEMORY, DO,IO1 | ||
| 00002000 | GPIO13 | LEDx1 | GPIO45 | U6?8?-P1, T-R | SPI-MEMORY, CS | ||
| 00004000 | GPIO14 | LEDx1 | GPIO46 | T10-6 | SPI0-SCK | ||
| 00008000 | GPIO15 | LEDx1 | GPIO47 | T10-2 | SPI0-SDA | ||
| 00010000 | GPIO16 | LEDx1 | GPIO48 | T10-4, J6 (BUTTON RESET) | SPI1-SCK | ||
| 00020000 | GPIO17 | LEDx1 | GPIO49 | T10-1 | SPI1-SDA | ||
| 00040000 | GPIO18 | LEDx1 | GPIO50 | ||||
| 00080000 | GPIO19 | LEDx1 | GPIO51 | ||||
| 00100000 | GPIO20 | LEDx1 | GPIO52 | ||||
| 00200000 | GPIO21 | P7-LED-GR, B-R139 | LEDx1 | GPIO53 | |||
| 00400000 | GPIO22 | LEDx1 | GPIO54 | ||||
| 00800000 | GPIO23 | LEDx1 | GPIO55 | ||||
| 01000000 | GPIO24 | P8-led-yellow,b-r154 | LEDx | GPIO56 | |||
| 02000000 | GPIO25 | GPIO57 | |||||
| 04000000 | GPIO26 | LEDx | GPIO58 | ||||
| 08000000 | GPIO27 | ? | GPIO59 | ||||
| 10000000 | GPIO28 | GPIO60 | |||||
| 20000000 | GPIO29 | GPIO61 | |||||
| 40000000 | GPIO30 | RTL8224N Reset | RTL8224 | GPIO62 | To RTL8224 | Already driver | |
| 80000000 | GPIO31 | B-r129-r? | U0TXD | GPIO63 |
GPIO Register Input value
GPIO 1: 0a7ffbdd GPIO 0: effb6dff
LEDs
| NAME | COMPONENTS | GPIO |
|---|---|---|
| SYSTEM | ? | |
| SFP | ? |
Power supply
Board has two supply rails.
0.95 and 3.3 volt.
0.95 Core Voltage.
Voltage is crated by a MP2225GJ Buck converter.
0.95V must be within 3%.
3.3 Voltage
Voltage is crated by a MP2225GJ Buck converter.
3.3V must be within 4.5%.
Chip can deliver up to 5A and the sweetspot is at 2A.
So higher power SFP-modules should work.
-
LEDs are found by just plugin a RJ45 connector and see with cmd
gpiothe status change. But the bit pattern for port 1,2 are diffrent from port 3,4. ↩︎