IP175C Datasheet, PDF (98/111 Pages) List of Unclassifed Manufacturers – 5 Port 10/100 Ethernet Integrated Switch

IP175C/IP175C LF/IP175CH/IP175CH LF
Data Sheet
MII1, MII1 and MII2 control register
PHY MII
31
5.15
31
5.14
31
5.13
31
5.12
31
5.11
31
5.10
31
5.9
31
5.8
31
5.7
31
5.6
ROM
7.0
--
--
7.4
60.2
60.3
3.5
3.4
3.3
3.2
R/W
Description
Default
R/W P4EXT
1: enable
0: disable (default)
Pin74
RO SMI0_polling
1: MII0 MAC mode, 0: MII0 PHY mode
RO SMI1_polling
1: MII1 MAC mode, 0: MII1 PHY mode
R/W MII1_PHY_MOD
Pin54(1)
1: MII1 is connected to PHY4.0: MII1 is connected to MAC4.
R/W MII0_mac_mode_en
*
External MII0 port MAC mode
1: MII0 works as a MAC and should be connected to an
external PHY.
0: MII0 works as a PHY and should be connected to an
external MAC device (default).
This bit does not affect MII1 port.
Default value
MII2_EN=1
MII2_EN=0
0
Pin96 MII0_MAC_MODE (0)
R/W MII0_RMII_EN
1: MII0 RMII interface enabled
0: MII0 RMII interface disabled (default).
Pin(0)
Default value
P4EXT=1 & RMII_EN=1
Others
1
0
R/W MII2_RMII_EN
*
1: MII2 RMII interface enabled
0: MII2 RMII interface disabled (default).
Default value
P4EXT=1 & RMII_EN=1 & MII2_EN=1 Others
1
0
R/W MII1_RMII_EN
*
1: MII1 RMII interface enabled
0: MII1 RMII interface disabled (default).
Default value
P4EXT=1 & RMII_EN=1 & MII1_DIS=0 Others
1
0
R/W MII1OR2_MAC_REPEATER
1
1: external PHY ‘s TXEN does not loop back to CRS (default)
0: external PHY ‘s TXEN loop back to CRS
R/W MII0_MAC_REPEATER
1
1: external PHY ‘s TXEN does not loop back to CRS (default)
0: external PHY ‘s TXEN loop back to CRS
Copyright © 2004, IC Plus Corp.
98/111
Mar 09, 2007
IP175C/IP175CH-DS-R14