KSZ8995M データシートの表示（PDF） - Micrel
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KSZ8995M Datasheet PDF : 76 Pages
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KS8995M
Micrel, Inc.
Pin Number
59
60
61
62
63
64
65
Pin Name
VDDIO
PMRXC
PMRXDV
PMRXD3
PMRXD2
PMRXD1
PMRXD0
66
PMRXER
67
PCRS
68
PCOL
69
SMTXEN
70
SMTXD3
71
SMTXD2
72
SMTXD1
73
SMTXD0
74
SMTXER
75
SMTXC
76
GNDD
77
VDDIO
78
SMRXC
79
SMRXDV
80
SMRXD3
81
SMRXD2
Type(1)
P
O
Ipd/O
Ipd/O
Ipd/O
Ipd/O
Ipd/O
Ipd/O
Ipd/O
Ipd/O
Ipd
Ipd
Ipd
Ipd
Ipd
Ipd
I/O
Gnd
P
I/O
Ipd/O
Ipd/O
Ipd/O
Port
5
5
5
5
5
5
5
5
5
Pin Function
3.3V digital VDD for digital I/O circuitry
PHY[5] MII receive clock. PHY mode MII
PHY[5] MII receive data valid
PHY[5] MII receive bit 3. Strap option: PD (default) = enable flow
control; PU = disable flow control.
PHY[5] MII receive bit 2. Strap option: PD (default) = disable back
pressure; PU = enable back pressure.
PHY[5] MII receive bit 1. Strap option: PD (default) = drop excessive
collision packets; PU = does not drop excessive collision packets.
PHY[5] MII receive bit 0. Strap option: PD (default) = disable
aggressive back-off algorithm in half-duplex mode; PU = enable for
performance enhancement.
PHY[5] MII receive error. Strap option: PD (default) = 1522/1518 bytes;
PU = packet size up to 1536 bytes.
PHY[5] MII carrier sense. Strap option for port 4 only. See “Register 76.”
PD (default) = Force half-duplex if auto-negotiation is disabled or fails.
PU = Force full-duplex if auto-negotiation is disabled or fails.
PHY[5] MII collision detect. Strap option for port 4 only.
See “Register 66.” PD (default) = No force flow control. PU = Force
flow control.
Switch MII transmit enable
Switch MII transmit bit 3
Switch MII transmit bit 2
Switch MII transmit bit 1
Switch MII transmit bit 0
Switch MII transmit error
Switch MII transmit clock. Input in MAC mode, output in PHY mode MII.
Digital ground
3.3V digital VDD for digital I/O circuitry
Switch MII receive clock. Input in MAC mode, output in PHY mode MII.
Switch MII receive data valid
Switch MII receive bit 3. Strap option: PD (default) = Disable Switch MII
full-duplex flow control; PU = Enable Switch MII full-duplex flow control.
Switch MII receive bit 2. Strap option: PD (default) = Switch MII in full-
duplex mode; PU = Switch MII in half-duplex mode.
Note:
1. P = Power supply
I = Input
O = Output
I/O = Bi-directional
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
PU = Strap pin pull-up
PD = Strap pin pull-down
Otri = Output tristated
NC = No Connect
July 2006
11
M9999-070506
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