KSZ8893FQL-FX Micrel Inc, KSZ8893FQL-FX Datasheet - Page 40

• Manufacturer Part Number: KSZ8893FQL-FX
• Description: 2+1 Port 10/100 Switch W/Tranceivers & Frame Buffers, ( )
• Manufacturer: Micrel Inc

Specifications of KSZ8893FQL-FX

• Controller Type: Ethernet Switch Controller
• Interface: MII, RMII, SNI
• Voltage - Supply: 3.1 V ~ 3.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• Number Of Primary Switch Ports: 3
• Internal Memory Buffer Size: 32
• Operating Supply Voltage (typ): 3.3V
• Fiber Support: Yes
• Integrated Led Drivers: Yes
• Power Supply Type: Analog/Digital
• Package Type: PQFP
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Temperature Classification: Commercial
• Data Rate: 1000Mbps
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: 576-1603 - EVAL KIT EXPERIMENTAL KSZ8893MQL
• Current - Supply: -
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant
• Other names: 576-3273

Micrel, Inc.
The KSZ8893FQL filters error frames, and thus does not implement the RX_ER output signal. To detect error frames
from RMII PHY devices, the SMTXER input signal of the KSZ8893FQL is connected to the RXER output signal of the
RMII PHY device.
Collision detection is implemented in accordance with the RMII Specification.
In RMII mode, tie MII signals, SMTXD[3:2] and SMTXER, to ground if they are not used.
The KSZ8893FQL RMII can interface with RMII PHY and RMII MAC devices. The latter allows two KSZ8893FQL
devices to be connected back-to-back. The following table shows the KSZ8893FQL RMII pin connections with an
external RMII PHY and an external RMII MAC, such as another KSZ8893FQL device.
SNI (7-Wire) Operation
The serial network interface (SNI) or 7-wire is compatible with some controllers used for network layer protocol
processing. In SNI mode, the KSZ8893FQL acts like a PHY and the external controller functions as the MAC. The
KSZ8893FQL can interface directly with external controllers using the 7-wire interface. These signals are divided into
two groups, one for transmission and the other for reception. The signals involved are described in the following table.
The SNI interface is a bit wide data interface and therefore, runs at the network bit rate (not encoded). An additional
signal on the transmit side indicates when data is valid. Similarly, the receive side has an indicator that conveys when
the data is valid.
For half duplex operation, the SCOL signal is used to indicate that a collision has occurred during transmission.
October 2007
External
PHY Signals
REF_CLK
CRS_DV
RXD1
RXD0
TX_EN
TXD1
TXD0
RX_ER
PHY-MAC Connections
KSZ8893FQL
Pin Descriptions
Transmit enable
Serial transmit data
Transmit clock
Collision detection
Carrier sense
Serial receive data
Receive clock
KSZ8893FQL
MAC Signals
REFCLK
SMRXDV
SMRXD[1]
SMRXD[0]
SMTXEN
SMTXD[1]
SMTXD[0]
SMTXER
Table 10. RMII Signal Connections
Table 11. SNI Signals
Pin
Descriptions
Reference Clock
Carrier sense/
Receive data valid
Receive data bit 1
Receive data bit 0
Transmit enable
Transmit data bit 1
Transmit data bit 0
Receive error
External MAC
Controller Signals
TXEN
TXD
TXC
COL
CRS
RXD
RXC
40
KSZ8893FQL
MAC Signals
REFCLK
SMRXDV
SMRXD[1]
SMRXD[0]
SMTXEN
SMTXD[1]
SMTXD[0]
(not used)
KSZ8893FQL
PHY Signals
SMTXEN
SMTXD[0]
SMTXC
SCOL
SMRXDV
SMRXD[0]
SMRXC
MAC-MAC Connections
KSZ8893FQL
External
MAC Signals
REF_CLK
CRS_DV
RXD1
RXD0
TX_EN
TXD1
TXD0
(not used)
M9999-101607-1.3
KSZ8893FQL