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KSZ8895MQXIA datasheet, price & pdf

Discover comprehensive insights in the KSZ8895MQXIA Reference Manual, offering essential technical details and pricing information. Access the pdf to understand this component's capabilities and enhance your project's efficiency.

Brands: Microchip Technology

Download: KSZ8895MQXIA Datasheet PDF

Price: inquiry

In Stock: 17,083

Protocol: Ethernet

Function: Switch

Interface: I²C, SPI

Package: 128-BFQFP

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KSZ8895MQXIA Pinout Equivalent Circuit

ksz8895mqxia pinout

1：Overview of the KSZ8895MQXIA：

The KSZ8895MQXIA is a high-performance 5-port Gigabit Ethernet switch controller developed by Microchip Technology. The KSZ8895MQXIA is widely used in embedded systems or network devices. It supports up to 5 ports for Gigabit Ethernet design, featuring low power consumption and high-speed data communication. It also offers functions such as VLAN, QoS, and traffic control. Under normal operating conditions, the current draw of the KSZ8895MQXIA is 100 mA. If battery power is used in the circuit, this device is an excellent choice. It supports RGMII/MII interfaces, allowing connection to main processors like ARM or FPGA. Additionally, the KSZ8895MQXIA handles VLAN tagging and CRC verification, and can perform port mirroring to reduce CPU load.

2：Pin function diagram of KSZ8895MQXIA:

Pin Number

Pin Name

Type

Description & Note 2-4

MDI-XDIS

IPD

Disable auto MDI/MDI-X.
Strap option:
PD = (default) in normal operation.
PU = disable auto MDI/MDI-X on all ports.

PMRXD3

IPD/O

PHY [5] MII receive bit 3.
Strap option:
PD = (default) enable flow control.
PU = disable flow control.

PMRXD2

IPD/O

PHY [5] MII receive bit 2.
Strap option:
PD = disable back pressure.
PU = enable back pressure.

PMRXD1

IPD/O

PHY [5] MII/RMII receive bit 1.
Strap option:
PD = drop excessive collision packets.
PU = does not drop excessive collision packets.

PMRXD0

IPD/O

PHY [5] MII/RMII receive bit 0.
Strap option:
PD = disable aggressive back-off algorithm in half-duplex mode.
PU = enable for performance enhancement.

PMRXER

IPD/O

PHY [5] MII/RMII receive error.
Strap option:
PD = 1522/1518 bytes.
PU = packet size up to 1536 bytes.

PCRS

IPD/O

PHY [5] MII carrier sense.
Strap option:
PD = force half-duplex if auto-negotiation is disabled or fails.
PU = force full-duplex if auto-negotiation is disabled or fails.

PCCOL

IPD/O

PHY [5] MII collision detect.
Strap option:
PD = no force control.
PU = force flow control.

SMRXD3

IPD/O

Switch MII receive bit 3.
Strap option:
PD = disable switch SW5-MII/RMII full-duplex flow control.
PU = enable switch SW5-MII/RMII full-duplex flow control.

SMRXD2

IPD/O

Switch MII receive bit 2.
Strap option:
PD = switch SW5-MII/RMII in full-duplex mode.
PU = switch SW5-MII/RMII in half-duplex mode.

SMRXD1

IPD/O

Switch MII receive bit 1.
Strap option:
PD = switch SW5-MII/RMII in 100 Mbps mode.
PU = switch MII/RMII in 10 Mbps mode.

SMRXD0

IPD/O

Switch MII/RMII receive bit 0.
Sivap option: LED mode PD (default) = mode 0; PU = mode 1. See “Register 11.”

	Mode 0	Mode 1
LEDx_2	Link/Activity	100Link/Activity
LEDx_1	Full-Duplex/Col	10Link/Activity
LEDx_0	Speed	Full-Duplex

SCONF1

IPD

Pin 91, 86, 87 are dual MII/RMII configuration pins for the Port 5 MAC 5 MII/RMII and PHY [5] MII/RMII. SWS-MII supports both MAC modes and PHY modes. P5-MII supports PHY mode only. See pins configuration below.

Pins [91, 86, 87]	Port 5 Switch MAC5 SW5 – MII/RMII	Port 5 PHY5 P5-MII/RMII
000	PHY Mode MII, or RMII	Disable, Otri
001	MAC Mode MII, or RMII	Disable, Otri
010	PHY Mode SNI	Disable, Otri
100	Disable (default)	Disable (default)
101	PHY Mode MII, or RMII	P5-MII/RMII
110	MAC Mode MII, or RMII	P5-MII/RMII
111	PHY Mode SNI	P5-MII/RMII

SCONF0

IPD

Dual MII/RMII configuration pin. See Pin 86 description.

LED5-2

IPU/O

LED5 indicator 2.
Strap option: Aging setup. See “Aging” section.
PU = (default) aging enable;
PD = aging disable.

LED5-1

IPU/O

LED5 indicator 1.
Strap option:
PU = (default) enable PHY [5] MII I/F.
PD = Tri-state all PHY [5] MII output. See “Pin 86 SCONF1.”

LED5-0

IPU/O

LED5 indicator 0.
Strap option for Port 4 only.
PU = (default) enable auto-negotiation.
PD = disable auto-negotiation.Strap to Register 76 bit [7].

LED4-0

IPU/O

LED indicator 0.
Strap option:
PU = (default) in normal mode.
PD = Energy Detection mode (EDPD mode).
Strap to Register 14 bits [4:3].

LED3-0

IPU/O

LED3 indicator 0.
Strap option:
PU (default) = Select I/O current drive strength (8 mA);
PD = Select I/O current drive strength (12 mA).
Strap to Register 132 bit [7:6]

101

LED2-2

IPU/O

LED2 indicator 2.
Strap option for KSZ8895RXQ only:
PU = (default) = Select the device as clock mode in RQX SW5-RMII, 25 MHz crystal to X1/X2 pins of the device and REFCLK output 50 MHz clock.
PD = Select the device as normal mode in SW5-RMII. Switch MAC5 used only. The input clock is useless from X1/X2 pin, the device’s clock comes from SMTXCS/SMREFCLK pin, 50 MHz reference clock from external 50 MHz clock source.

102

LED2-1

IPU/O

LED2 indicator 1.
Strap option for Port 3 only.
PU = (default) = Enable auto-negotiation.
PD = Disable auto-negotiation.
Strap to Register50 bit [7].

105

LED1-0

IPU/O

LED1 indicator 1.
Strap option for Port 3 only.
PU = (default) = no force flow control, normal operation.
PD = force flow control. Strap to Register50 bit [4].

106

LED1-1

IPU/O

LED1 indicator 0.
Strap option for Port 3 only.
PU = (default) = force half-duplex if auto-negotiation is disabled or fails.
PD = force full-duplex if auto-negotiation is disabled or fails.
Strap to Register50 bit [5].

113

PS1

IPD

Serial bus configuration pin. For this case, if the EEPROM is not present, the KSZ8895MQX/RQX/FXMII will start itself with the PS1[0] = 00 default register values.

Pin Configuration	Serial Bus Configuration
PS[1:0] = 00	I²C Master Mode for EEPROM
PS[1:0] = 01	SMI Interface Mode
PS[1:0] = 10	SPI Slave Mode for CPU Interface
PS[1:0] = 11	Factory Test Mode (BIST)

114

PS0

IPD

Serial bus configuration pin. See Pin 113.

12B

TEST2

NC for normal operation. Factory test pin.

3：Partial circuit diagram of the KSZ8895MQXIA component.

KSZ8895MQXIA circuit 1
（1）The diagram above shows a circuit using an internal 1.2V low-dropout (LDO) controller. This is the preferred circuit diagram that uses an internal 1.2V LDO controller along with an external MOSFET. The 1.2V rail from the MOSFET drain pin to VDDAR pin 3 is the feedback path for the 1.2V LDO. The PCB trace for this connection should be as short as possible, and there must not be any series components on this feedback loop.
KSZ8895MQXIA circuit 2

（2）As shown in the figure above, it is recommended that users use this circuit as a power-on reset circuit.

4：Alternative model recommendation

Realtek RTL8367S：

The RTL8367S is a high-performance 5-port gigabit Ethernet switch controller introduced by Semiconductor, featuring an integrated hardware switching engine. It is suitable for applications requiring fast data transfer and low power consumption, such as industrial control, network storage, and IoT devices. The Realtek RTL8367S, like the KSZ8895MQXIA, includes a 5-port gigabit switch (with 4 PHYs and 1 switching port). It supports features such as VLAN, QoS, and flow control, along with RGMII/MII/TBI interfaces, and is compatible with mainstream controllers like ARM, FPGA, and DSP. Due to different packaging, circuit diagrams need to be modified when replacing it.
RTL8367S

NXP SJA1105Q：

NXP SJA1105Q is a high-performance Ethernet switch controller that supports a 5-port Gigabit Ethernet switch controller. It is designed for industrial automation, network storage, and embedded systems, featuring hardware-accelerated switching, low power consumption, and industrial-grade reliability. Suitable for high-speed data communication in complex network environments. Utilizing advanced manufacturing processes, it offers significant power optimization, making it ideal for 24/7 operation scenarios. It meets the industrial temperature range (-40°C to +125°C).
SJA1105Q

KSZ8895MQXIA datasheet, price & pdf