RTL8306SD/RTL8306SDM
Datasheet
6.3.
Port4 MAC Circuit Interface Pins
The external device must be 3.3V compatible as the digital output of the RTL8306SD/RTL8306SDM
is 3.3V.
Table 4. Port4 MAC Circuit Interface Pins
Pin
Name
Pin Type
No.
Drive
(MA)
-
Description
Default
MRXD[3]/
PTXD[3]
67
I (IPU)
I (IPU)
I (IPU)
When MII/RMII 1 is used by MAC 4 in MAC mode, this
pin is input pin MRXD[3].
-
When MII/RMII 1 is used by MAC 4 in PHY mode, this pin
is input pin PTXD[3].
When MII/RMII 1 is used by MAC 4 in RMII mode, this
pin is not used.
MRXD[2]/
PTXD[2]
66
-
When MII/RMII 1 is used by MAC 4 in MAC mode; this
pin is input pin MRXD[2].
-
When MII/RMII 1 is used by MAC 4 in PHY mode; this pin
is input pin PTXD[2].
When MII/RMII 1 is used by MAC 4 in RMII mode; this
pin is not used.
M(R)
RXD[1]/
PTXD[1]
63
61
-
-
When MII/RMII 1 is used by MAC 4 in MAC mode; this
pin is input pin MRXD[1].
When MII/RMII 1 is used by MAC 4 in PHY mode; this pin
is input pin PTXD[1].
-
-
When MII/RMII 1 is used by MAC 4 in RMII mode; this
pin is input pin RRXD[1].
M(R)
RXD[0]/PTXD
[0]
I
When MII/RMII 1 is used by MAC 4 in MAC mode; this
pin is input pin MRXD[0].
(IPU)
When MII/RMII 1 is used by MAC 4 in PHY mode; this pin
is input pin PTXD[0].
When MII/RMII 1 is used by MAC 4 in RMII mode; this
pin is input pin RRXD[0].
MRXDV/
PTXEN/
CRSDV
60
I
-
When MII/RMII 1 is used by MAC 4 in MAC mode.
This pin is input pin MRXDV.
-
(IPD)
When MII/RMII 1 is used by MAC 4 in PHY mode; this pin
is input pin PTXEN.
When MII/RMII 1 is used by MAC 4 in RMII mode; this
pin is input pin CRSDV.
6-Port 10/100Mbps Single-Chip Dual MII/RMII Switch Controller
13
Track ID: JATR-1076-21 Rev. 1.1
REALTEK [ Realtek Semiconductor Corp. ]
