KSZ8841-16 Micrel Semiconductor, KSZ8841-16 Datasheet - Page 36

• Manufacturer Part Number: KSZ8841-16
• Description: Single-port Ethernet Mac Controller With Non-pci Interface
• Manufacturer: Micrel Semiconductor

Loopback Support
The KSZ8841M
speed at the PH
Near-end (Remote) Loopback
Near-end (Remote) loopback is condu
receive inputs (RXP1/RXM1), wraps a
outputs (TXP1/TXM1).
Bit [1] of register P1PHYCTRL is used
can also be used to enable near-end
11.
November 2005
Micrel Confidential
Y p
pr
ovides
ort wi
ll be set to
Near-end
RXP1 /
RXM1
Figure 11. PHY Port 1 Near-end (Remote) Loopback Path
10
(R
0BASE-TX
loopback. The ports 1 near-end loopback path is illustrated in the fo
cted at PHY port 1of the KSZ8841M. The loopback path starts
to enable near-end loopback for port 1. Alternatively, Bit [9]
emote) loop
round at the same PHY port’s PMD/PMA, and ends at the PH
fu
Bus I/F Unit
back support for remote diagnostic of failure. In loopback mode, the
ll-duplex mode.
PMD1/PMA1
Near-end (remote)
QMU/DMA
RXQ/TXQ
36
PHY Port 1
MAC1
PCS1
Loopback
TXP1 /
TXM1
KSZ8841-16/32 MQL/MVL
of register P1SCSLMD
at the PHY port’s
Y port’s transmit
llowing Figure
Rev 1.3