KS8999 Micrel Inc, KS8999 Datasheet - Page 16

• Manufacturer Part Number: KS8999
• Description: IC SWITCH 10/100 9PORT 208PQFP
• Manufacturer: Micrel Inc

Specifications of KS8999

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 208-MQFP, 208-PQFP
• 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
• Mounting: Surface Mount
• Jtag Support: No
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: 576-1023 - BOARD EVAL EXPERIMENT FOR KS8999
• Lead Free Status / RoHS Status: Not Compliant, Contains lead / RoHS non-compliant

KS8999
Note 1.
KS8999
Group
CTRL
All unmanaged programming takes place at reset time only. For unmanaged programming: F = Float, D = Pull-down, U = Pull-up.
See
“Reference Circuits”
LED[6][1:0]
I/O Names
LED[9][1]
LED[9][0]
LED[6][3]
LED[6][2]
LED[7][3]
LED[7][2]
LED[7][1]
LED[7][0]
LED[8][3]
LED[8][2]
LED[8][1]
LED[8][0]
MRXD[3]
MRXD[2]
MRXD[1]
MRXD[0]
MIIS[1:0]
EN1P
Active Status
section.
H
H
Description
Programs port duplex (full / half) on port 7. This is only effective if auto-negotiation is
disabled or if this end has auto-negotiation enabled and the far end has auto-
negotiation disabled.
D = Full-duplex, F/U = Half-duplex (default)
Programs port duplex (full / half) on port 8. This is only effective if auto-negotiation is
disabled or if this end has auto-negotiation enabled and the far end has auto-
negotiation disabled.
D = Full-duplex, F/U = Half-duplex (default)
Programs back-off aggressiveness for half-duplex mode
D = Less aggressive back-off, F/U = More aggressive back-off (default)
Programs retries for frames that encounter collisions.
D = Drop frame after 16 collisions, F/U = Continue sending frame regardless of the
number of collisions (default)
Reserved – use float configuration
Programs flow control
D = No flow control, F/U = Flow control enabled (default)
Programs broadcast storm protection.
D = 5% broadcast frames allowed, F/U = Unlimited broadcast frames (default)
Programs buffer sharing feature.
D = Equal amount of buffers per port (113 buffers), F/U = Share buffers up to 512
buffers on a single port (default)
Reserved – use float configuration
Programs address aging.
D = Aging disabled, F/U = Enable 5 minute aging (default)
Programs frame length enforcement.
D = Max length for VLAN is 1522 bytes and without VLAN is 1518 bytes
F/U = Max length is 1536 bytes (default)
Reserved
Programs half-duplex back pressure.
D = No half-duplex back pressure, F/U = Half-duplex back pressure enabled (default)
Programs port 9 speed
D = 10Mbps, F/U = 100Mbps (default)
Programs port 9 duplex
D = Half-duplex, F/U = Full duplex (default)
Programs port 9 flow control
D = Flow control, F/U = No flow control (default)
D = reserved, F/U = normal operation (default)
Enable 802.1p for all ports – this enables QoS based on the priority field in the layer
2 header.
0 = 802.1p selected by port in EEPROM
1 = Use 802.1p priority field unless disabled in EEPROM
Note: This is also controlled by the EEPROM registers (registers 4-12 bit 4). The values
in the EEPROM supercede this pin. Also, if the priority selection is unaltered in the
EEPROM registers (register 3 bits 0-7) then values above 3 are considered high priorty
and less than 4 are low priority.
MII mode selection – allows the MII to run in the following modes
MIIS
1 0
0 0
0 1
1 0
1 1
Operating mode
Disable MII interface
Reverse MII
Forward MII
7 wire mode (SNI)
(Note 1)
16
January 2005
Micrel