KS8893ML MICREL [Micrel Semiconductor], KS8893ML Datasheet - Page 48
KS8893ML
Manufacturer Part Number
KS8893ML
Description
Integrated 3-Port 10/100 Managed Switch with PHYs Preliminary Data Sheet Rev. 1.0
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet
1.KS8893ML.pdf
(106 pages)
- Current page: 48 of 106
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Near-end (Remote) Loopback
Near-end (Remote) loopback is conducted at either PHY port 1 or PHY port 2.of the KS8893M. The loopback
path starts at the PHY port’s receive inputs (RXPx/RXMx), wraps around at the same PHY port’s PMD/PMA, and
ends at the PHY port’s transmit outputs (TXPx/TXMx).
Bit [1] of registers 26 and 42 is used to enable near-end loopback for ports 1 and 2, respectively. Alternatively,
the MII Management register 31, bit [1] can be used to enable near-end loopback.
The near-end loopback paths are illustrated in the following figure.
June 2005
RXP1 /
RXM 1
RXP2 /
RXM 2
Figure 13. Near-end (Remote) Loopback Path
PMD/PMA
PMD/PMA
Switch
Port 1
MAC
MAC
PHY
PCS
PCS
Port 2
PHY
48
TXP2 /
TXM2
TXP1 /
TXM 1
M9999-063005
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