
www.ti.com | EMAC Functional Architecture |
2.3System-Level Connections
On the TCI6486/C6472 device, EMAC0 and EMAC1 support the following different types of interfaces to physical layer devices (PHYs) or switches. Each EMAC can be configured to only one interface at any given time. EMAC0 interface is selected by programming MACSEL0 [2:0] pins (see Table 4) and EMAC1 interface is selected by programming MACSEL1 [1:0] pins (see Table 5).
Table 4. EMAC0 Interface Selection Pins
MACSEL0 [2:0] | Interface |
000 | MII |
001 | RMII |
010 | GMII |
011 | RGMII |
100 | Not used |
101 | S3MII |
110 | Not used |
111 | Not used |
|
|
Table 5. EMAC1 Interface Selection Pins
MACSEL1 [1:0] | Interface |
00 | Not used |
01 | S3MII |
10 | RGMII |
11 | RMII |
|
|
Table 6 explains the decoding of MACSEL0 [2:0], MACSEL1[1:0], and EMAC1_EN of the DEVCTL register.
Table 6. MACSEL0[2:0], MACSEL1[1:0], and EMAC1_EN Decoding
| MACSEL02 | MACSEL01 | MACSEL00 | MACSEL11 | MACSEL10 | EMAC_EN |
| EMAC0 | EMAC1 |
0 | 0 | 0 | X | X | 0 |
| MII | None | |
|
|
|
|
|
|
|
|
|
|
0 | 0 | 0 | 0 | X | 1 |
| MII | None | |
|
|
|
|
|
|
|
|
|
|
0 | 0 | 0 | 1 | 0 | 1 |
| MII | RGMII | |
|
|
|
|
|
|
|
|
|
|
0 | 1 | 0 | X | X | 0 |
| GMII | None | |
|
|
|
|
|
|
|
|
|
|
0 | 1 | 0 | 0 | X | 1 |
| GMII | None | |
|
|
|
|
|
|
|
|
|
|
0 | 1 | 0 | 1 | 0 | 1 |
| GMII | RGMII | |
|
|
|
|
|
|
|
|
|
|
0 | 0 | 1 | X | X | 0 |
| RMII | None | |
|
|
|
|
|
|
|
|
|
|
0 | 1 | 1 | X | X | 0 |
| RGMII | None | |
|
|
|
|
|
|
|
|
|
|
1 | 0 | 0 | X | X | 0 |
| None | None | |
|
|
|
|
|
|
|
|
|
|
1 | 0 | 1 | X | X | 0 |
| S3MII | None | |
|
|
|
|
|
|
|
|
|
|
0 | 0 | 1 | 0 | 0 | 1 |
| RMII | None | |
|
|
|
|
|
|
|
|
|
|
0 | 0 | 1 | 0 | 1 | 1 |
| RMII | S3MII | |
|
|
|
|
|
|
|
|
|
|
0 | 0 | 1 | 1 | 0 | 1 |
| RMII | RGMII | |
|
|
|
|
|
|
|
|
|
|
0 | 0 | 1 | 1 | 1 | 1 |
| RMII | RMII | |
|
|
|
|
|
|
|
|
|
|
0 | 1 | 1 | 0 | 0 | 1 |
| RGMII | None | |
|
|
|
|
|
|
|
|
|
|
0 | 1 | 1 | 0 | 1 | 1 |
| RGMII | S3MII | |
|
|
|
|
|
|
|
|
|
|
0 | 1 | 1 | 1 | 0 | 1 |
| RGMII | RGMII | |
|
|
|
|
|
|
|
|
|
|
0 | 1 | 1 | 1 | 1 | 1 |
| RGMII | RMII | |
|
|
|
|
|
|
|
|
|
|
1 | 0 | 0 | 0 | 0 | 1 |
| None | None | |
|
|
|
|
|
|
|
|
|
|
1 | 0 | 0 | 0 | 1 | 1 |
| None | S3MII | |
|
|
|
|
|
|
|
|
|
|
1 | 0 | 0 | 1 | 0 | 1 |
| None | RGMII | |
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
SPRUEF8F |
|
|
| C6472/TCI6486 EMAC/MDIO 17 | |||||
Submit Documentation Feedback |
|
|
|
|
|
|
|
Copyright ©