Datasheet

 2016 Microchip Technology Inc. DS00002246A-page 65
KSZ8895MQX/RQX/FQX/MLX
Register 132 (0x84): Global Control 16
7 - 6
Chip I/O output
drive strength
select[1:0]
Output drive strength select[1:0] =
00 = 4 mA drive strength
01 = 8 mA drive strength (default)
10 = 10 mA drive strength
11 = 14 mA drive strength
Note:
Bit [1] value is the INVERT of the strap value at
the pin.
Bit[0] value is the SAME of the strap value at the
pin.
R/W
01
Pin LED [3][0] strap
option. Pull-down (0):
Select 10 mA drive
strength. Pull-up (1):
Select 8 mA drive
strength.
Note: LED [3][0] has
internal pull-up.
5
Unknown multi-
cast packet for-
ward (not
including IP mul-
ticast packet)
1 = enable supporting unknown multicast packet
forward
0 = disable
R/W 0
4 - 0
Unknown multi-
cast packet for-
ward port map
00000 = filter unknown multicast packet
00001 = forward unknown multicast packet to
port 1,
00010 = forward unknown multicast packet to
port 2,
00011 = forward unknown multicast packet to
port 1, port 2
…
11111 = broadcast unknown multicast packet to
all ports
R/W 00000
Register 133 (0x85): Global Control 17
7 - 6 Reserved — RO 00
5
Unknown VID
packet forward
1 = enable supporting unknown VID packet for-
ward
0 = disable
R/W 0
4 - 0
Unknown VID
packet forward
port map
00000 = filter unknown VID packet
00001 = forward unknown VID packet to port 1,
00010 = forward unknown VID packet to port 2,
00011 = forward unknown VID packet to port 1,
port 2
…
11111 = broadcast unknown VID packet to all
ports
R/W 00000
Register 134 (0x86): Global Control 18
7 Reserved N/A RO 0
6
Self-Address
Filter Enable
1 = Enable filtering of self-address unicast and
multicast packet
0 = Do not filter self-address packet
Note: The self-address filtering will filter packets
on the egress port, self MAC address is
assigned in the Register 104-109.
R/W 0
5
Unknown IP
multicast packet
forward
1 = enable supporting unknown IP multicast
packet forward
0 = disable
R/W 0
TABLE 4-4: ADVANCED CONTROL REGISTER DESCRIPTIONS (CONTINUED)
Address Name Description Mode Default