The Table 2-2 shows pin comparison between DP83TC811 and DP83TG720.
Table 2-2 Pin Comparison Table
Pin No. |
DP83TC811 |
DP83TG720 |
1 |
MDC |
MDC |
2 |
INT_N |
INT_N |
3 |
RESET_N |
RESET_N |
4 |
XO |
XO |
5 |
XI |
XI |
6 |
LED_1 |
LED_1 |
7
1 |
EN |
VSLEEP |
823 |
WAKE |
WAKE |
9 |
DNC4 |
VDD1P06 |
105 |
INH |
INH |
11 |
VDDA6 |
VDDA6 |
12 |
TRD_P |
TRD_P |
13 |
TRD_M |
TRD_M |
14 |
RX_ER |
STRP1 |
15 |
RX_DV |
RX_CTRL |
16 |
CLKOUT |
CLKOUT |
17 |
TCK |
DNC4 |
18 |
TDO |
DNC4 |
19 |
TMS |
DNC4 |
20 |
TCK |
DNC4 |
21 |
DNC4 |
VDD1P06 |
22 |
VDDIO6 |
VDDIO6 |
23 |
RX_D37 |
RX_D3 |
24 |
RX_D27 |
RX_D2 |
25 |
RX_D17 |
RX_D1 |
26 |
RX_D07 |
RX_D0 |
27 |
RX_CLK7 |
RX_CLK |
28 |
TXCLK7 |
TXCLK |
29 |
TX_EN7 |
TX_CTRL |
30 |
TX_D37 |
TX_D3 |
31 |
TX_D27 |
TX_D2 |
32 |
TX_D17 |
TX_D1 |
33 |
TX_D07 |
TX_D0 |
34 |
TX_ER |
VDDIO6 |
35 |
LED_0 |
LED_0 |
36 |
MDIO |
MDIO |
- Pin 7's functionality in DP83TC811 is of an
input pin to put the phy in the disabled state (when low) and works on VDDIO supply domain.
Whereas Pin 7 of DP83TG720 is a supply pin which must be connected to 3.3V supply (supply
should be on for both functional and sleep mode).
- Wake pin of DP83TC811 should be on VDDIO
supply domain and should be asserted high for wake-up feature. Whereas Wake pin of DP83TG720
should be on VSLEEP supply domain and sending high pulse for defined duration is sufficient
for wake-up feature.
- DP83TC811 does not require turning off of any
external supply for PHY to go into sleep mode. DP83TG720's supplies must be powered down for
PHY to go into sleep mode. Refer to data sheet of DP83TG720 for application diagram for its
sleep mode.
- Do Not Connect : These pins must be left
floating. Test structures connected to these pins and should be kept floating to avoid
damage or wrong mode entry of PHY
- DP83TC811 has INH pin on VDDIO domain and is
high (Vddio level) when PHY is in sleep mode. Whereas DP83TG720 has INH pin on VSLEEP domain
(3.3V) and is low when PHY is in sleep mode.
- Refer to respective data sheets and reference
schematic in this document for the power supply network requirements.
- For Rgmii use case, layout constraint for
1Gbps Rgmii signals should be followed to facilitate reuse of MAC routes for both DP83TG720
and DP83TC811.