參數(shù)資料
型號: KSZ8841-16MQL-EVAL
廠商: Micrel Inc
文件頁數(shù): 43/105頁
文件大?。?/td> 0K
描述: BOARD EVALUATION KSZ8841-16MQL
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: KSZ8841-16MQL
主要屬性: 1 個(gè)端口,100BASE-TX/10BASE-T
次要屬性: 8/16 位接口,LinkMD 線纜診斷
已供物品: 板,CD,文檔,電源
相關(guān)產(chǎn)品: KSZ8841-16MQL A6-ND - IC MAC CTRLR 8/16BIT 128-PQFP
576-2115-ND - IC MAC CTRLR 32BIT 128-PQFP
576-2112-ND - IC MAC CTRLR 8/16BIT 128-PQFP
其它名稱: 576-1631
Micrel, Inc.
KSZ8841-16/32 MQL/MVL/MBL
October 2007
42
M9999-102207-1.6
Loopback Support
The KSZ8841M provides Near-end (Remote) loopback support for remote diagnostic of failure. In loopback mode, the
speed at the PHY port will be set to 100BASE-TX full-duplex mode.
Near-end (Remote) Loopback
Near-end (Remote) loopback is conducted at PHY port 1of the KSZ8841M. The loopback path starts at the PHY port’s
receive inputs (RXP1/RXM1), wraps around at the same PHY port’s PMD/PMA, and ends at the PHY port’s transmit
outputs (TXP1/TXM1).
Bit [1] of register P1PHYCTRL is used to enable near-end loopback for port 1. Alternatively, Bit [9] of register P1SCSLMD
can also be used to enable near-end loopback. The ports 1 near-end loopback path is illustrated in the following Figure
12.
Bus I/F Unit
QMU/DMA
RXQ/TXQ
MAC1
PCS1
PMD1/PMA1
RXP1 /
RXM1
TXP1 /
TXM1
PHY Port 1
Near-end (remote)
Loopback
Figure 12. PHY Port 1 Near-end (Remote) Loopback Path
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