KS8993F-A1 Micrel Inc, KS8993F-A1 Datasheet - Page 59

• Manufacturer Part Number: KS8993F-A1
• Description: IC CONV MED 10/100 3PORT 128PQFP
• Manufacturer: Micrel Inc

Specifications of KS8993F-A1

• Applications: *
• Mounting Type: Surface Mount
• Package / Case: 128-MQFP, 128-PQFP
• For Use With: KS8993F-EVAL - EVAL KIT EXPERIMENTAL KS8993F
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

KS8993F
Register 19 (0x13): Port 1 Control 3
Register 20 (0x14): Port 1 Control 4
Note: Registers 19 and 20 (and those corresponding to other ports) serve two purposes:
Register 21 (0x15): Port 1 Control 5
August 26, 2004
5
4
3
2
1
0
Bit
7-0
Bit
7-0
Register 35 (0x23): Port 2 Control 3
Register 51 (0x33): Port 3 Control 3
Register 36 (0x24): Port 2 Control 4
Register 52 (0x34): Port 3 Control 4
(1) Associated with the ingress untagged packets, and used for egress tagging.
(2) Default VID for the ingress untagged or null-VID-tagged packets, and used for
address look up.
Register 37 (0x25): Port 2 Control 5
Register 53 (0x35): Port 3 Control 5
Discard Non
PVID packets
Force flow
control
Back
pressure
enable
Transmit
enable
Receive
enable
Learning
disable
Name
Default tag
[15:8]
Name
Default tag
[7:0]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
= 0, no ingress VLAN filtering
= 1, the switch will discard packets whose VID does not match
= 0, no packets will be discarded
= 1, will always enable flow control on the port, regardless of AN
= 0, the flow control is enabled based on AN result.
= 1, enable port’s half duplex back pressure
= 0, disable port’s half duplex back pressure.
= 1, enable packet transmission on the port
= 0, disable packet transmission on the port
= 1, enable packet reception on the port
= 0, disable packet reception on the port
= 1, disable switch address learning capability
= 0, enable switch address learning capability
Description
Port’s default tag, containing
Description
Port’s default tag, containing
ingress port default VID.
result.
7-5 : User Priority bits
3-0 : VID[11:8]
7-0 : VID[7:0]
4 : CFI bit
- 59 -
0
Pin value
during reset:
For port 1,
For port 2,
For port 3, this
bit has no
meaning. Flow
control is
controlled by
Pin value
during reset:
1
1
0
Default
0x00
Default
0x01
P1FFC pin
P2FFC pin
Reg. 6, bit 5
BPEN pin
Revision 1.0
Micrel