小米AX6000拆机

Xiaomi AX6000 disassembly

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Xiaomi AX6000 appearance and Xiaomi AX3600 the same, in order to save you and me time, the appearance of these pictures will not be put.

小米AX6000拆机

The back interface is a bit different, Xiaomi AX6000 has 2.5GbE network port, supports WAN/LAN switching, the back is marked with a blue bar:.

小米AX6000拆机

 

The external seven antennas, corresponding to the frequency bands shown in the following figure.

小米AX6000拆机

Direct disassembly of the housing.

小米AX6000拆机

Take off the antenna connector and remove the motherboard.

小米AX6000拆机

I define this side as the front side of the main board.

小米AX6000拆机

Back of the motherboard.


小米AX6000拆机

Remove the heatsink, which is longer than the motherboard.

小米AX6000拆机

See a piece of metal shield, take it off to see, no chip inside: the

小米AX6000拆机

Three network transformers, the one on the left in the picture below is a 2.5GbE network transformer

小米AX6000拆机

Back to the front of the motherboard, remove the heatsink, there are a total of five pieces of heat-conductive silicone pads between the heatsink and the shield.

小米AX6000拆机

Zoom in to see the front of the motherboard.

小米AX6000拆机

There is some beauty in looking at it from a different angle.

小米AX6000拆机

Lifting the 6-piece shield.

小米AX6000拆机

I was most concerned about the 5G wireless chip and wondered if it was the QCN9074, and how much I had wanted to buy a wireless card with this chip.

But Xiaomi AX6000 is not using QCN9074, but QCN9024, QCN9024, QCN9024, as follows.

QCN9024

From the figures than the QCN9074 low-end, I do not know what attributes neutered, Qualcomm really will make money!

First determine the QCN9024 wireless parameters.

Maximum wireless rate of 4804Mbps at 4x4mimo, 1024-QAM, 160MHz.

In 2x2mimo, 4096-QAM, 160MHz, the highest wireless rate of 2882Mbps.

The above rate parameters are referenced from an attribute of QCN9074: Supports up to 1024 QAM (4SS) and 4096 QAM (2SS)

Xiaomi official website parameters page of a: rate set: MCS0 ~ MCS11 (support 4 streams).4096QAM.

It means 4096-QAM is not supported under 3x3mimo, 4x4mioo.

Anyway, this is the first Qualcomm chip I’ve taken apart that supports 4x4mimo 160MHz bandwidth.

The QCN9074 supports 6 GHz full band, so the QCN9024 likely neutered that part, at least!

5G FEM chip, Xiaomi said in advance with Xiaomi AX3600 used the same: QPF4588, the following chart.

QPF4588

The parameters of QPF4588 are as follows.

5150 – 5925 MHz
POUT = +16dBm MCS11 HE80 -47dB Dynamic EVM
POUT = +18dBm MCS11 HE80 -43dB Dynamic EVM
POUT = +23dBm MCS9 VHT80 -35dB Dynamic EVM
POUT = +24dBm MCS7 HT20/40 -30dB Dynamic EVM
POUT = +26dBm MCS0 HT20 Spectral Mask Compliance
Optimized for +5 V Operation
33 dB Tx Gain
2 dB Noise Figure
16 dB Rx Gain & 7 dB Bypass Loss
30 dB 2.4 GHz Rejection on Rx Path

There is only HE80 (802.11ax, 80MHz bandwidth) in the parameters, not HE160 (802.11ax 160MHz), and no MCS13 (4096-QAM).

Not very high power in terms of parameters.

The maximum frequency supported by this 5G FEM chip is 5925 MHz, so then, the FEM chip does not support 6GHz.

The 5G RF circuit is summarized in the following figure.

小米AX6000拆机

The next look at the CPU, the model is IPQ5018, the official website parameters also explain this CPU model, integrated single-core 1GHz NPU. look at this chip package will not feel high.

IPQ5018 is an arm, cortex-a53 CPU, dual-core 1GHz, tentative is this dual-core 1GHz this parameter, because I did not find more detailed information.

IPQ5018

Someone replied that it belongs to the Qualcomm Immersive Home 216 Platform family, as follows.

Qualcomm Immersive Home 216 Platform

Then IPQ5018 hardware is not supported Wi-Fi 6E.

IPQ5018 also integrated wireless chip, accidentally ah, and can save a separate wireless chip. 2.4G amplifier chip with the same as the Xiaomi AX3600: QPF4288, the following chart.

QPF4288

The parameters of QPF4288 are as follows.

2400-2500 MHz
POUT = +17 dBm HE40 -47dB Dynamic EVM
POUT = +22 dBm HE40 -43dB Dynamic EVM
POUT = +24.5 dBm MCS9 HT40 -35dB Dynamic EVM
POUT = +26 dBm MCS7 HT20/40 -30dB Dynamic EVM
POUT = +28 dBm MCS0 HT20 Spectral Mask Compliance
Optimized for +5 V Operation
33 dB Tx Gain
1.7 dB Noise Figure
15.5 dB Rx Gain & 7 dB Bypass Loss
>10dB 5 GHz Rejection on Rx Path

The power is considered high. But the national standard limits 2.4G to 20 dBm or less, when the standard more strictly enforced, you will find that the new wireless router 2.4G signal strength, obviously weaker than the N years ago to buy, that is the reason. I guessed it!

2.4G RF circuit is summarized as follows.

小米AX6000拆机

The blue box in the lower left corner of the figure above is the radio circuit responsible for AIoT, enlarged as follows.

QCA9889

The QCA9889 pictured above is also used in the Xiaomi AX3600.

The QCA9889 is a highly integrated wireless local area network (WLAN) system-on-chip (SoC) for 5 GHz 802.11ac, or 2.4/5 GHz 802.11n WLAN applications.

The dual-band wireless chip supports a maximum rate of 150 Mbps for 2.4G and 433 Mbps for 5G.

There are two small chips in the picture, the one with “224” is BGU7224, which is a 2.4G LNA chip.

The chip with the silkscreen “258” is BGU7258, a 5G LAN chip (simply put, a signal receiving power amplifier).

About AIoT some things some feelings, recently bought a few intelligent products Xiaomi, later to do a study.

AIoT antenna on the router, is to help the new Mi smart products to join the network to lose the process of setting up the matching network, directly prompt you whether to join. I haven’t tried it yet !!!!!

But the routing AIoT is not a smart gateway role. It is only responsible for “scanning” work.

I forgot that there is a memory chip next to the CPU, model number: EM6HE16EWAKG-10H, SDRAM – DDR3L 4Gb (256M x 16), capacity 512MB.

小米AX6000拆机

Here are two network chips.

小米AX6000拆机

The chip model number on the left in the picture above is QCA8081, as shown below. Ann’s information.

The QCA8081 supports six different Ethernet protocols: 10BASE-Te half-duplex, 10BASE-Te full-duplex, 100BASE-TX half-duplex, 100BASE-TX full-duplex, 1000BASE-T full-duplex, and 2500BASE-T fullduplex. The QCA8081 provides physical layer functions to transmit and receive data over standard Category 5 (Cat5) or Category 6 (Cat6) unshielded twisted-pair cables. The QCA8081 includes one SerDes, which can work as 1.25 G SGMII or 3.125 G SGMII+ for connection with MAC.

 

QCA8081

A single port, four speed (10 M/100 M/1 G/2.5 G) Ethernet PHY transceiver

The QCA8081 is an Ethernet PHY chip (physical interface transceiver) and the Ethernet MAC is integrated in the IPQ5018.

QCA8081 next to a switch chip: QCA8337-AL3C, it can support up to seven Gigabit ports, and here it only used to three, why not use QCA8075 like Xiaomi AX3600? Because the cost problem ah.

QCA8337

There is a subtle relationship between QCN9024 and QCA8081, QCA8081 and QCA8337-AL3C.

The QCA8081 (2.5GbE PHY chip) is connected to the IPQ5018 (integrated MAC) with SGMII+ (bus bandwidth 2.5Gbps).

The QCA8337-AL3C (Gigabit switch chip) is connected to the IPQ5018 (integrated MAC) with an RGMII connection (1Gbps total band bandwidth).

Then the question arises, if you send data from a 2.5GbE network port, to any two or even three LAN ports at the same time, the total speed will not exceed 1Gbps. the real test also confirms this problem: the real test Xiaomi AX6000’s 2.5GbE network port is a problem

If you are mainly wireless transmission (2.5GbE and 5G WiFi transmission between), this problem has no impact.

Power management chip: MP5496.

The MP5496 is a complete power management solution that integrates four high-efficiency, step-down, DC/DC converters, five low-dropout regulators, and a flexible logic interface.

2.8V-5.5V, Power Management IC with Four 4.5A/2.5A/4A/2A Buck Converters, 5 LDOs, And Flexible System Settings via I2C and OTP

MP5496

Xiaomi AX3600 with the power management chip is PMP8074.

Flash memory chip now, the model is GD5F1GQ4REYIG, belongs to GD5F1GQ4xExxG series, capacity 128MB, 128MB less than the Xiaomi AX3600.

小米AX6000拆机

TTL pin definition, the following chart two short either TX or RX, interchangeable on.

小米AX6000拆机

At this point, the Xiaomi AX6000 disassembly is over.

小米AX6000拆机

Why do you need to buy two? If it is QCN9074, I take one as a wireless card to use ah, and not expensive, than the ASUS PCE-AC88 wireless card is also cheaper than 200 yuan. Have you ever seen a wireless network card with 7 antennas? No, Xiaomi has it!

Xiaomi 11 connected to Xiaomi AX6000 wireless router, open 160MHz bandwidth, set channel 44, the phone connection rate 2882Mbps, as follows.

2882mbps

Connected to the WAN port Internet, standby power 8.1W, the power is a little high, estimated high in QCN9024.

Take the god machine Xiaomi 4C placed downstairs D point location test home 300 megabit broadband, came up with about 220Mbps, is not bad, with the red rice AC2100 the same strength.

For the time being, here it is, more testing to be done in many days.

Seeing IPQ5018 reminds me of IPQ4019/4018.

What do you need for a 2.5GbE network port? It has it!

What do you need? A powerful CPU?

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