Datasheet

 2017 Microchip Technology Inc. DS00002335B-page 33
KSZ8863MLL/FLL/RLL
3.13 Loopback Support
KSZ8863MLL/FLL/RLL provides loopback support for remote diagnostic of failure. In loopback mode, the speed at both
PHY ports must be set to 100BASE-TX. Two types of loopback are supported: Far-end Loopback and Near-end
(Remote) Loopback.
FIGURE 3-11: SPI MULTIPLE WRITE
FIGURE 3-12: SPI MULTIPLE READ
SPIQ
SPIC
SPID
SPIS_N
00000010X A7 A6 A5 A4 A3 A2 A1
A0
WRITE COMMAND WRITE ADDRESS Byte 1
D2 D0D1D3D4D5D6D7
SPIQ
SPIC
SPID
SPIS_N
D7 D6 D5 D4 D4 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1
D0
Byte 2 Byte 3 ... Byte N
D2 D0D1D3D4D5D6D7
SPIQ
SPIC
SPID
SPIS_N
00000011X A7 A6 A5 A4 A3 A2 A1
A0
D7 D6 D5 D4 D3 D2 D1 D0
READ COMMAND READ ADDRESS Byte 1
XXXXXXXXXXXXXXX
X
Byte 2 Byte 3 Byte N
X X X X X X X X
XXXXXXXX
D7 D6 D5 D4 D3 D2 D1 D0
D7 D6 D5 D4 D3 D2 D1 D0 D7 D6 D5 D4 D3 D2 D1 D0
SPIQ
SPIC
SPID
SPIS_N