参数资料
型号: KSZ8995MAI
厂商: Micrel Inc
文件页数: 36/89页
文件大小: 0K
描述: IC SWITCH 5-PORT 10/100 128PQFP
标准包装: 66
系列: *
类型: *
应用: *
安装类型: 表面贴装
封装/外壳: 128-BFQFP
供应商设备封装: 128-PQFP(14x20)
包装: 托盘
产品目录页面: 1081 (CN2011-ZH PDF)
配用: 576-1607-ND - BOARD EVAL EXPERIMENT KSZ8995MA
其它名称: 576-2126
KSZ8995MAI-ND
Micrel, Inc.
KS8995MA/FQ
October 2011
41
M9999-102611-3.0
Configuration Interface
The KS8995MA/FQ can function as a managed switch or unmanaged switch. If no EEPROM or micro-controller exists,
the KS8995MA/FQ will operate from its default setting. Some default settings are configured via strap in options as
indicated in the following tables.
Pin #
Pin Name
PU/PD
(1)
Description
(1)
1
MDI-XDIS
Ipd
Disable auto MDI/MDI-X.
PD = (default) = normal operation
PU = disable auto MDI/MDI-X on all ports.
45
MUX1
NC
Factory test pins. MUX1 and MUX2 should be left unconnected for normal operation.
46
MUX2
NC
Mode
MUX1
MUX2
Normal Operation
NC
62
PMRXD3
Ipd/O
PHY[5] MII receive bit 3. Strap option: PD (default) = enable flow control; PU = disable
flow control.
63
PMRXD2
Ipd/O
PHY[5] MII receive bit 2. Strap option: PD (default) = disable back pressure; PU = enable
back pressure.
64
PMRXD1
Ipd/O
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
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
PHY[5] MII receive error. Strap option: PD (default) = 1522/1518 bytes; PU = packet size
up to 1536 bytes.
67
PCRS
Ipd/O
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
PHY[5] MII collision detect/strap option for port 4 only. PD (default) = no force flow
control. PU = force flow control. Refer to register 66.
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.
82
SMRXD1
Ipd/O
Switch MII receive bit 1. Strap option: PD (default) = switch MII in 100Mbps mode; PU =
switch MII in 10Mbps mode.
83
SMRXD0
Ipd/O
Switch MII receive bit 0. Strap option: LED mode PD (default) = mode 0; PU = mode 1.
See “Register 11.”
Mode 0
Mode 1
LEDX_2
Lnk/Act
100Lnk/Act
LEDX_1
Fulld/Col
10Lnk/Act
LEDX_0
Speed
Fulld
Note:
1.
NC = No connect.
Ipd = Input w/internal pull-down.
Ipd/O = Input w/internal pull-down during reset, output pin otherwise.
Fulld = Full duplex.
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