KSZ8995MAFQ Datasheet, PDF (23/89 Pages) Micrel Semiconductor – Integrated 5-Port 10/100 Managed Switch

Micrel, Inc.
KS8995MA/FQ
Pin Description − By Name
Pin Number Pin Name Type⁽¹⁾ Port Pin Function⁽²⁾
86
SCONF1
Ipd
Dual MII configuration pin. For the Switch MII, KSZ8995MA supports both MAC mode
and PHY mode, KSZ8995FQ supports PHY mode only.
Pin# (91, 86, 87):
Switch MII
PHY [5] MII
000
Disable, Otri
Disable, Otri
001
PHY Mode MII
Disable, Otri
010
MAC Mode MII
Disable, Otri
011
PHY Mode SNI
Disable, Otri
100
Disable
Disable
101
PHY Mode MII
PHY Mode MII
110
MAC Mode MII
PHY Mode MII
111
PHY Mode SNI
PHY Mode MII
85
SCRS
Ipd/O
Switch mode carrier sense.
78
SMRXC
I/O
Switch MII receive clock. Input in MAC mode, output in PHY mode MII.
Switch MII receive bit 0; Strap option: LED mode
PD (default) = mode 0; PU = mode 1. See “Register 11.”
83
SMRXD0
Ipd/O
LEDX_2
Mode 0
Lnk/Act
Mode 1
100Lnk/Act
LEDX_1
Fulld/Col
10Lnk/Act
LEDX_0
Speed
Full duplex
82
SMRXD1
Ipd/O
Switch MII receive bit 1. Strap option: PD (default) = Switch MII in 100Mbps mode;
PU = Switch MII in 10Mbps mode.
81
SMRXD2
Ipd/O
Switch MII receive bit 2. Strap option: PD (default) = Switch MII in full-duplex mode;
PU = Switch MII in half-duplex mode.
80
SMRXD3
Ipd/O
Switch MII receive bit 3. Strap option: PD (default) = Disable Switch MII full-duplex
flow control; PU = Enable Switch MII full-duplex flow control.
79
SMRXDV
Ipd/O
Switch MII receive data valid.
75
SMTXC
I/O
Switch MII transmit clock. Input in MAC mode, output in PHY mode MII.
73
SMTXD0
Ipd
Switch MII transmit bit 0.
72
SMTXD1
Ipd
Switch MII transmit bit 1.
71
SMTXD2
Ipd
Switch MII transmit bit 2.
70
SMTXD3
Ipd
Switch MII transmit bit 3.
69
SMTXEN
Ipd
Switch MII transmit enable.
74
SMTXER
Ipd
Switch MII transmit error.
Notes:
1.
2.
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.
Otri = Output tristated.
NC = No connect.
PU = Strap pin pull-up.
PD = Strap pull-down.
Fulld = Full duplex
December 2012
23
M9999-121212-3.0