參數(shù)資料
型號(hào): KSZ8841-16MBLI
廠商: Micrel Inc
文件頁(yè)數(shù): 43/105頁(yè)
文件大小: 0K
描述: IC MAC CTRLR 8/16BIT 100-LBGA
標(biāo)準(zhǔn)包裝: 260
控制器類型: 以太網(wǎng)控制器,MAC
接口: 總線
電源電壓: 3.1 V ~ 3.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 100-LBGA
供應(yīng)商設(shè)備封裝: 100-LFBGA
包裝: 散裝
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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