Datasheet

 2016 Microchip Technology Inc. DS00002246A-page 11
KSZ8895MQX/RQX/FQX/MLX
69 SMTXEN IPD — Port 5 Switch MII/RMII transmit enable.
70 SMTXD3 IPD —
MQX/FQX/MLX: Port 5 Switch MII transmit bit 3.
RQX: no connection for RMII.
71 SMTXD2 IPD —
MQX/FQX/MLX: Port 5 Switch MII transmit bit 2.
RQX: no connection for RMII.
72 SMTXD1 IPD — Port 5 Switch MII/RMII transmit bit 1.
73 SMTXD0 IPD — Port 5 Switch MII/RMII transmit bit 0.
74 SMTXER IPD —
MQX/FQX/MLX: Port 5 Switch MII transmit error
RQX: Port 5 Switch RMII transmit error
75
SMTXC/
SMREFCLK
I/O —
MQX/FQX/MLX: Port 5 Switch MII transmit clock,
Input: SW5-MII MAC mode, Output: SW5-MII PHY modes.
RQX: Input SW5-RMII 50MHz ±50 ppm reference clock. The
50 MHz clock comes from SMRXC Pin 78 when the device is the
clock mode which the device’s clock comes from 25 MHz crystal/
oscillator from Pins X1/X2. Or the 50 MHz clock comes from exter-
nal 50 MHz clock source when the device is the normal mode which
the device’s clock source comes from SMTXC pin not from X1/X2
pins.
76 GNDD GND — Digital ground.
77 VDDIO P — 3.3V, 2.5V, or 1.8V digital V
DD
for digital I/O circuitry.
78 SMRXC I/O —
MQX/FQX/MLX: Port 5 Switch MII receive clock,
Input: SW5-MII MAC mode, Output: SW5-MII PHY mode.
RQX: Output SW5-RMII 50 MHz clock, this clock is used when
opposite doesn’t provide RMII reference clock or the system
doesn’t provide an external 50 MHz clock for the RMII interface.
79
SMRXDV/
SMCRSDV
IPD/O —
MQX/FQX/MLX: SMRXDV is for Switch MAC5 MII receive data
valid.
RQX: SMCRSDV is for MAC5 RMII Carrier Sense/Receive Data
Valid Output.
80 SMRXD3 IPD/O —
MQX/FQX/MLX: Port 5 Switch MII receive bit 3.
RQX: no connection for RMII
Strap option:
PD (default) = Disable Switch SW5-MII/RMII full-duplex flow control
PU = Enable Switch SW5-MII/RMII full-duplex flow control.
81 SMRXD2 IPD/O —
MQX/FQX/MLX: Port 5 Switch MII receive bit 2.
RQX: no connection for RMII
Strap option:
PD (default) = Switch SW5-MII/RMII in full-duplex mode;
PU = Switch SW5-MII/RMII in half-duplex mode.
82 SMRXD1 IPD/O —
MQX/FQX/MLX: Port 5 Switch MII receive bit 1.
RQX: Port 5 Switch RMII receive bit 1.
Strap option:
PD (default) = Port 5 Switch SW5-MII/RMII in 100 Mbps mode.
PU = Switch SW5-MII/RMII in 10 Mbps mode.
TABLE 2-1: SIGNALS - KSZ8895MQX/RQX/FQX/MLX (CONTINUED)
Pin
Number
Pin
Name
Type,
Note
2-1
Port Pin Function, Note 2-2