KS8999_11 MICREL [Micrel Semiconductor], KS8999_11 Datasheet - Page 14

• Manufacturer Part Number: KS8999_11
• Description: Integrated 9-Port 10/100 Switch with PHY and Frame Buffer
• Manufacturer: MICREL [Micrel Semiconductor]

January 2005
Micrel, Inc.
I/O Grouping
I/O Descriptions
Group
Group Name
PHY
SNI
IND
MII
CTRL
TEST
PWR
PHY
SNI
IND
MII
UP
LED[1:9][0]
LED[1:9][1]
I/O Names
MRXD[0:3]
MTXD[0:3]
FXSD[1:8]
RXM[1:8]
TXM[1:8]
MRXD[0]
RXP[1:8]
MTXD[0]
TXP[1:8]
MRXDV
MRXDV
MTXEN
MTXER
MTXEN
MCRS
MRXC
MRXC
MCOL
MTXC
MCOL
MTXC
ISET
Description
Physical Interface
Media Independent Interface
Serial Network Interface
LED Indicators
Unmanaged Programmable
Control and Miscellaneous
Test (Factory)
Power and Ground
Active Status
Analog
Analog
Analog
Clock
Clock
Clock
Clock
H
H
H
H
H
H
H
H
H
H
H
H
H
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 with
appropriate voltage divider if needed. Tie low for copper mode.
Transmit Current Set. Connecting an external reference resistor to set
transmitter output current. This pin connects to a 3KΩ1% resistor to ground if
a transformer with 1:1 turn ratio is used.
Four bit wide data bus for receiving MAC frames
Receive data valid
Receive collision detection
Carrier sense
Four bit wide data bus for transmitting MAC frames
Transmit enable
Transmit error
MII receive clock
MII transmit clock
Serial transmit data
Transmit enable
Serial receive data
Receive carrier sense/data valid
Collision detection
SNI receive clock
SNI transmit clock
Output (after reset)
Mode 0: Speed (on = 100/off = 10)
Mode 1: 10/100 + link + activity
Mode 2: Collision (on = collision/off = no collision)
Mode 3: Speed (on = 100/off = 10)
Output (after reset)
Mode 0: Full Duplex (on = full/off = half)
Mode 1: Full Duplex (on = full/off = half)
Mode 2: Full Duplex (on = full/off = half)
Mode 3: Reserved
10Mb link activity = slow blink (non-periodic blinking)
100Mb link activity = fast blink (non-periodic blinking)
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KS8999
KS8999