DP83848i SNI auto-negotiation 10MHz pin-settings

Hi team,

Customer of mine setup DP83848i at pin level (I dont have register settings for now):
Pins for selecting the SNI :
MII_MODE Signal: Pull-up corresponding to a logic '1'
SNI_MODE Signal: Pull-up corresponding to a logic '1'
 
Pins for selection ETHERNET PHY mode:
AN_EN Signal: Pull-up corresponding to a logic '1'.
AN1 Signal: Pull-down corresponding to a logic '0'.
AN0 Signal: Pull-down corresponding to a logic '0'.

The expectation is that in this configuration ,the PHY Ethernet would be limited to10 Mbits / s and the auto-negotiation is enabled for the HALF / FULL Duplex mode.
 
Behavior of Ethernet PHY experienced:
1) No connected equipment on Ethernet link, then the Ethernet PHY is configured in MII Mode 100Mbits / s and the frequency of the clock is 25MHz TX_CLK => Why Ethernet PHY MII mode configures 100Mbits / s while the HW configuration requires SNI @ 10MHz?
2) system connected to a portable PC set to auto-negotiation, from the PC data, the clock remains at 25MHz TX_CLK corresponding to the IBD method 100Mbits / s. At the end of auto-negotiation protocol, the TX_CLK clock reverts to 10MHz. But with another PC, auto-negotiation seems to fail and TX_CLK clock remains at 25Mhz ( we see that when the auto-negotiation process starts, TX_CLK switches to 10MHz clock goes back to  25MHz 
 
Note:
If you configure the Ethernet PHY-10Mbit / s mode forced. (Disabled Auto-negotiation), so in this case, when starting the card, the Ethernet PHY-TX_CLK the clock is 10MHz corresponding to the SNI mode, as expected
 

Did we miss any pin configuration?