RTL8305SC
Datasheet
5-port 10/100Mbps Single-Chip Dual MII Switch Controller
15
Track ID: JATR-1076-21 Rev. 1.2
Pin Name
Pin No.
Type
Drive (mA) Description
MCOL/PCOL
58
I/OPD
4
For MAC mode MII, this pin represents MCOL collision (acts as
input).
For PHY mode MII/PHY mode SNI, this pin represents PCOL
collision (acts as output).
MTXD[3]/PRXD[3]
/P4IRTag[1]
MTXD[2]/PRXD[2]
/P4IRTag[0]
57
56
I/OPU
4
Output After Reset.
For MAC mode MII (P4MODE[1:0]=11), these pins are
MTXD[3:0], MII transmit data of MAC.
For PHY mode MII (P4MODE[1:0]=01), these pins are
PRXD[3:0], MII receive data of PHY.
For PHY mode SNI (P4MODE[1:0]=00), PRXD[0] is SNI serial
receive data.
Input Upon Reset: P4IRTag[1:0]
Insert/Remove VLAN tags of Port 4.
11=Do not insert/remove VLAN tags to/from packets.
10=Insert VLAN tags to non-tagged packets.
01=Remove tag from tagged packet.
00=Replace the VLAN tags for tagged packets and insert a
VLAN tag to non-tagged packets.
These pins are used for Port 4 only. Use serial EEPROM for
other ports.
MTXD[1]/PRXD[1]
/LEDMODE[1]
MTXD[0]/PRXD[0]
/LEDMODE[0]
55
54
I/OPU
4
Output After Reset.
For MAC mode MII (P4MODE[1:0]=11), these pins are
MTXD[3:0], MII transmit data of MAC.
For PHY mode MII (P4MODE[1:0]=01), these pins are
PRXD[3:0], MII receive data of PHY.
For PHY mode SNI (P4MODE[1:0]=00), PRXD[0] is SNI serial
receive data.
Input Upon Reset: LEDMODE[1:0]
Each port has four LED indicator pins. Each pin has different
indicator meanings set by pins, LEDMODE[1:0].
LEDMODE[1:0]=11: Speed + Link/Act + Duplex/Col +
Link/Act/Spd.
LEDMODE[1:0]=10: Speed + Act + Duplex/Col+Bi-color
Link/Active.
LEDMODE[1:0]=01: Speed + RxAct + TxAct + Link.
LEDMODE[1:0]=00: Reserved.
All LED statuses are represented as active-low or high depending
on input strapping, except Bi-color Link/Act in Bi-color LED
mode, whose polarity depends on Spd status.
Link/Act/Spd: Link, Activity, and Speed Indicator. ON for link
established. Blinking every 43ms when the corresponding port is
transmitting or receiving at 100Mbps. Blinking every 120ms
when the port is transmitting or receiving at 10Mbps.
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
