參數(shù)資料
型號(hào): KSZ8895MQ-EVAL
廠商: Micrel Inc
文件頁(yè)數(shù): 36/119頁(yè)
文件大小: 0K
描述: BOARD EVALUATION FOR KSZ8895MQ
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,以太網(wǎng)控制器(PHY 和 MAC)
嵌入式:
已用 IC / 零件: KSZ8895MQ
已供物品:
相關(guān)產(chǎn)品: 576-3753-ND - IC ETHERNET SW 5PORT 128-PQFP
其它名稱: 576-3871
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Micrel, Inc.
KSZ8895MQ/RQ/FMQ
Pin for Strap-In Options
The KSZ8895MQ/RQ/FMQ can function as a managed switch or an unmanaged switch. If no EEPROM or micro-
controller exists, then the KSZ8895MQ/RQ/FMQ will operate from its default setting. The strap-in option pins can be
configured by external pull-up/down resistors and take effect after power down reset or warm reset. The functions are
described in the following table.
Pin #
Pin Name
PU/PD
(1)
Description
(1)
1
MDI-XDIS
IPD
Disable auto MDI/MDI-X.
Strap option:
PD = (default) = normal operation.
PU = disable auto MDI/MDI-X on all ports.
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 SW5-MII full-duplex flow control;
PU = enable switch SW5-MII full-duplex flow control.
81
SMRXD2
IPD/O
Switch MII receive bit 2.
Strap option:
PD (default) = switch SW5-MII in full-duplex mode;
PU = switch SW5-MII in half-duplex mode.
82
SMRXD1
IPD/O
Switch MII receive bit 1.
Strap option:
PD (default) = switch SW5-MII in 100Mbps mode.
PU = switch MII in 10Mbps mode.
March 12, 2014
23
Revision 1.7
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