KS8995MA
Micrel, Inc.
M9999-051305
16
May 2005
Pin Number
Pin Name
Type(1)
Port
Pin Function(2)
97
LED3-1
Ipu/O
3
LED indicator 1.
96
LED3-2
Ipu/O
3
LED indicator 2.
95
LED4-0
Ipu/O
4
LED indicator 0.
94
LED4-1
Ipu/O
4
LED indicator 1.
93
LED4-2
Ipu/O
4
LED indicator 2.
92
LED5-0
Ipu/O
5
LED indicator 0.
91
LED5-1
Ipu/O
5
LED indicator 1. Strap option: PU (default) = enable PHY MII I/F
PD: tristate all PHY MII output. See “Pin 86 SCONF1.”
90
LED5-2
Ipu/O
5
LED indicator 2. Strap option: aging setup. See “Aging” section.
(default) = aging enable; PD = aging disable.
107
MDC
Ipu
All
Switch or PHY[5] MII management data clock.
108
MDIO
I/O
All
Switch or PHY[5] MII management data I/O.
1
MDI-XDIS
Ipd
1-5
Disable auto MDI/MDI-X.
45
MUX1
NC
Factory test pins. MUX1 and MUX2 should be left unconnected for
46
MUX2
NC
normal operation.
Mode
MUX1
MUX2
Normal Operation
NC
68
PCOL
Ipd/O
5
PHY[5] MII collision detect/force flow control. See “Register 18.”
For port 4 only. PD (default) = no force flow control. PU = force flow
control.
67
PCRS
Ipd/O
5
PHY[5] MII carrier sense/force duplex mode. See “Register 28.”
For port 4 only. PD (default) = force half-duplex if auto-negotiation is
disabled or fails. PU = force full-duplex if auto-negotiation is disabled
or fails.
60
PMRXC
O
5
PHY[5] MII receive clock. PHY mode MII.
65
PMRXD0
Ipd/O
5
PHY[5] MII receive bit 0. Strap option: PD (default) = disable
aggressive back-off algorithm in half-duplex mode; PU = enable for
performance enhancement.
64
PMRXD1
Ipd/O
5
PHY[5] MII receive bit 1. Strap option: PD (default) = drop excessive
collision packets; PU = does not drop excessive collision packets.
63
PMRXD2
Ipd/O
5
PHY[5] MII receive bit 2. Strap option: PD (default) = disable back
pressure; PU = enable back pressure.
62
PMRXD3
Ipd/O
5
PHY[5] MII receive bit 3. Strap option: PD (default) = enable flow
control; PU = disable flow control.
61
PMRXDV
Ipd/O
5
PHY[5] MII receive data valid.
66
PMRXER
Ipd/O
5
PHY[5] MII receive error. Strap option: PD (default) = 1522/1518 bytes;
PU = packet size up to 1536 bytes.
Note:
1.
P = Power supply.
I = Input.
O = Output.
I/O = Bidirectional.
Gnd = Ground.
Ipu = Input w/ internal pull-up.
Ipd = Input w/ internal pull-down.
Ipd/O = Input w/ internal pull-down during reset, output pin otherwise.
Ipu/O = Input w/ internal pull-up during reset, output pin otherwise.
NC = No connect.
2.
PU = Strap pin pull-up.
PD = Strap pin pull-down.