KSZ8893MQL AM TR Micrel Inc, KSZ8893MQL AM TR Datasheet - Page 65
![no-image](/images/manufacturer_photos/0/4/434/micrel_inc_sml.jpg)
KSZ8893MQL AM TR
Manufacturer Part Number
KSZ8893MQL AM TR
Description
2+1 Port 10/100 Switch W/Tranceivers & Frame Buffers, 128-Ld PQFP ( )
Manufacturer
Micrel Inc
Datasheet
1.KSZ8893MQL_AM_TR.pdf
(116 pages)
Specifications of KSZ8893MQL AM TR
Lead Free Status / RoHS Status
Supplier Unconfirmed
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Register 5 (0x05): Global Control 3 (continued)
Register 6 (0x06): Global Control 4
Bit
3
2-1
0
Bit
7
6
5
December 2007
Name
Weighted
Fair Queue
Enable
Reserved
Sniff Mode
Select
Name
Repeater
Mode
Switch MII Half
Duplex Mode
Switch MII
Flow Control
Enable
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Description
0 = always transmit higher priority packets first
1 = Weighted Fair Queueing enabled. When all four
queues have packets waiting to transmit, the
bandwidth allocation is q3:q2:q1:q0 = 8:4:2:1.
If any queues are empty, the highest non-empty
queue gets one more weighting. For example, if q2 is
empty, q3:q2:q1:q0 becomes (8+1):0:2:1.
Reserved
Do not change the default values.
= 1, will do RX AND TX sniff (both source port and
destination port need to match)
= 0, will do RX OR TX sniff (either source port or
destination port needs to match). This is the mode
used to implement RX only sniff.
Description
=1, enable repeater mode
=0, disable repeater mode
Note: For repeater mode, all ports need to be set to
100BASE-TX and half duplex mode. PHY ports need
to have auto-negotiation disabled.
= 1, enable MII interface half-duplex mode.
= 0, enable MII interface full-duplex mode.
= 1, enable full duplex flow control on Switch MII
interface.
= 0, disable full duplex flow control on Switch MII
interface.
65
Default
0
00
0
Default
0
Pin SMRXD2
strap option.
Pull-down(0):
Full-duplex
mode
Pull-up(1):
Half-duplex
mode
Note:
SMRXD2 has
internal pull-
down.
Pin SMRXD3
strap option.
Pull-down(0):
Disable flow
control
Pull- up(1):
Enable flow
control
Note:
SMRXD3 has
internal pull-
down.
M9999-121007-1.5
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