KS8995E Micrel Inc, KS8995E Datasheet - Page 12

• Manufacturer Part Number: KS8995E
• Manufacturer: Micrel Inc

Specifications of KS8995E

• Number Of Primary Switch Ports: 5
• Fiber Support: Yes
• Integrated Led Drivers: Yes
• Phy/transceiver Interface: MII/SNI
• Power Supply Type: Analog/Digital
• Package Type: PQFP
• Data Rate (typ): 10/100Mbps
• Vlan Support: Yes
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Pin Count: 128
• Mounting: Surface Mount
• Jtag Support: No
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Not Compliant

KS8995E
I/O Descriptions
KS8995E
Group
PHY
IND
SNI
MII
LED[1:5][0]
LED[1:5][1]
LED[1:5][2]
LED[1:5][3]
I/O Names
MRXD[0:3]
MTXD[0:3]
FXSD[1:5]
RXM[1:5]
RXP[1:5]
TXM[1:5]
MTXD[0]
MRXD[0]
TXP[1:5]
MII_CLK
MII_CLK
MRXDV
MRXDV
MTXEN
MTXER
MTXEN
MCOL
MCOL
ISET
Active Status
Analog
Analog
Analog
Clock
Clock
H
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
Description
Differential inputs (receive) for connection to media (transformer or fiber module)
Differential outputs (transmit) for connection to media (transformer or fiber module)
Fiber signal detect - connect to fiber signal detect output on fiber module. Tie low for
100TX mode.
Transmit Current Set. Connecting an external reference resistor to set transmitter
output current. This pin connects a 1% 3K resistor if a transformer of turns ratio
of 1:1 is used.
Four bit wide data bus for receiving MAC frames
Receive data valid
Receive collision detection
Four bit wide data bus for transmitting MAC frames
Transmit enable
Transmit error
MII interface clock
Serial transmit data
Transmit enable
Serial receive data
Receive carrier sense/data valid
Collision detection
SNI interface clock
Output (after reset)
Mode 0: Speed (on = 100/off = 10)
Mode 1: Speed (on = 100/off = 10)
Mode 2: Speed (on = 100/off = 10)
Mode 3: Speed (on = 100/off = 10)
Output (after reset)
Mode 0: Full Duplex (on = full/off = half)
Mode 1: Link (on = connected/off = not connected)
Mode 2: Link (on = connected/off = not connected)
Mode 3: Reserved
Output (after reset)
Mode 0: Collision (on = collision / off = no collision)
Mode 1: Transmit Activity (on during transmission)
Mode 2: Full Duplex + Collision
(constant on = full-duplex / intermittent on = collision/off = half-duplex with no collision)
Mode 3: Full Duplex + Collision
(constant on = full-duplex / intermittent on = collision/off = half-duplex with no collision)
Output (after reset)
Mode 0: Link + Activity
Mode 1: Receive Activity (on = receiving/off = not receiving)
Mode 2: Activity (on = transmit or receive activity/off = no activity)
Mode 3: Link + Activity
Note: Mode is set by MODESEL[3:0] ; please see description in UP (unmanaged
programming) section.
12
August 2003
Micrel