KSZ8895MQX Datasheet, PDF (19/108 Pages) Microchip Technology – Integrated 5-Port 10/100 Managed Ethernet Switch with MII/RMII Interface

KSZ8895MQX/RQX/FQX/MLX
TABLE 2-2: STRAP-IN OPTIONS - KSZ8895MQX/RQX/FQX/MLX (CONTINUED)
Pin Number Pin Name
Type,
Note 2-3
Description, Note 2-4
101
102
105
106
113
114
128
Note 2-3
LED2-2
IPU/O
LED2 indicator 2.
Strap option for KSZ8895RQX 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 SMTXC/SMREFCLK pin, 50 MHz reference clock
from external 50 MHz clock source.
LED2-1
IPU/O
LED2 indicator 1.
Strap option for Port 3 only.
PU (default) = Enable auto-negotiation.
PD = Disable auto-negotiation.
Strap to Register60 bit [7].
LED2-0
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].
LED1-0
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 Register60 bit [5].
Serial bus configuration pin. For this case, if the EEPROM is not
present, the KSZ8895MQX/RQX/FQX/MLX will start itself with the
PS[1:0] = 00 default register values.
Pin Configuration
Serial Bus Configuration
PS1
IPD
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)
PS0
IPD
Serial bus configuration pin. See “Pin 113.”
TEST2
NC
NC for normal operation. Factory test pin.
NC = No connect.
IPD = Input with internal pull-down.
IPU/O = Input with internal pull-up during reset; output pin otherwise.
IPD/O = Input with internal pull-down during reset; output pin otherwise.
Note 2-4
NC = Do not connect to PCB.
PU = Strap pin pull-up.
PD = Strap pin pull-down.
 2016 Microchip Technology Inc.
DS00002246A-page 19