參數(shù)資料
型號(hào): KSZ8895RQ
廠商: Micrel Inc
文件頁(yè)數(shù): 30/119頁(yè)
文件大小: 0K
描述: IC 10/100-T 5 PORT SW 128PQFP
標(biāo)準(zhǔn)包裝: 66
系列: *
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Micrel, Inc.
KSZ8895MQ/RQ/FMQ
Pin Description (Continued)
Pin Number
Pin Name
Type
(1)
Port
Pin Function
(2)
64
PMRXD1
IPD/O
5
PHY[5] MII/RMII 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/RMII 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
MQ/FMQ:PHY[5] MII receive error
RQ: no connection for RMII
Strap option:
PD (default) = packet size 1518/1522 bytes.
PU = 1536 bytes.
67
PCRS
IPD/O
5
MQ/FMQ: PHY[5] MII carrier sense.
RQ: no connection for RMII.
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
MQ/FMQ: PHY[5] MII collision detect.
RQ: no connection.
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
Port 5 Switch MII/RMII transmit enable.
70
SMTXD3
IPD
MQ/FMQ: Port 5 Switch MII transmit bit 3.
RQ: no connection for RMII.
71
SMTXD2
IPD
MQ/FMQ: Port 5 Switch MII transmit bit 2.
RQ: no connection for RMII.
72
SMTXD1
IPD
Port 5 Switch MII/RMII transmit bit 1.
73
SMTXD0
IPD
Port 5 Switch MII/RMII transmit bit 0.
74
SMTXER
IPD
MQ/FMQ: Port 5 Switch MII transmit error.
RQ: no connection for RMII.
75
SMTXC/SMREFCLK
I/O
MQ/FMQ: Port 5 Switch MII transmit clock,
Input: SW5-MII MAC mode, Output: SW5-MII PHY modes.
RQ: Input SW5-RMII 50MHz +/-50ppm reference clock. The
50MHz clock comes from SMRXC Pin 78 when the device is the
clock mode which the device’s clock comes from 25MHz
crystal/oscillator from pins X1/X2. Or the 50MHz clock comes
from external 50MHz clock source when the device is the normal
mode which the device’s clock source comes from SMTXC pin
not from X1/X2 pins.
76
GNDD
GND
Digital ground.
77
VDDIO
P
3.3V, 2.5V or 1.8V digital VDD for digital I/O circuitry.
March 12, 2014
18
Revision 1.7
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