參數(shù)資料
型號(hào)： KSZ8995FQI
廠商： Micrel Inc
文件頁(yè)數(shù)： 8/89頁(yè)
文件大?。?/td> 0K
描述： IC SWITCH 10/100 5PORT 128-PQFP
標(biāo)準(zhǔn)包裝： 66
系列： *
產(chǎn)品目錄頁(yè)面： 1081 (CN2011-ZH PDF)
配用： 576-3872-ND - BOARD EVALUATION FOR KSZ8995FQ
其它名稱： 576-3300
Micrel, Inc.
KS8995MA/FQ
October 2011
16
M9999-102611-3.0
Pin Description
By Numbers (Continued)
Pin Number
Pin Name
Type
(1)
Port
Pin Function
(2)
61
PMRXDV
Ipd/O
5
PHY[5] MII receive data valid.
62
PMRXD3
Ipd/O
5
PHY[5] MII receive bit 3. Strap option: PD (default) = enable flow control;
PU = disable flow control.
63
PMRXD2
Ipd/O
5
PHY[5] MII receive bit 2. Strap option: PD (default) = disable back pressure;
PU = enable back pressure.
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.
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.
66
PMRXER
Ipd/O
5
PHY[5] MII receive error. Strap option: PD (default) = packet size 1518/1522 bytes;
PU = 1536 bytes.
67
PCRS
Ipd/O
5
PHY[5] MII carrier sense/strap option 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. Refer to Register 76.
68
PCOL
Ipd/O
5
PHY[5] MII collision detect/ strap option for port 4 only. PD (default) = no force flow
control, normal operation. PU = force flow control. Refer to Register 66
69
SMTXEN
Ipd
Switch MII transmit enable.
70
SMTXD3
Ipd
Switch MII transmit bit 3.
71
SMTXD2
Ipd
Switch MII transmit bit 2.
72
SMTXD1
Ipd
Switch MII transmit bit 1.
73
SMTXD0
Ipd
Switch MII transmit bit 0.
74
SMTXER
Ipd
Switch MII transmit error.
75
SMTXC
I/O
Switch MII transmit clock. Input in MAC mode, output in PHY mode MII.
76
GNDD
GND
Digital ground.
77
VDDIO
P
3.3V digital VDD for digital I/O circuitry.
78
SMRXC
I/O
Switch MII receive clock. Input in MAC mode, output in PHY mode MII.
79
SMRXDV
Ipd/O
Switch MII receive data valid.
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.
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.
Notes:
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 pull-down.
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