IP178C
Preliminary Data Sheet
58/91
October 27, 2005
Copyright © 2004, IC Plus Corp.
IP178C-DS-R09
PHY
MII
ROM
R/W
Description
Default
Switch control register 2
30
2[15:10]
5[7:2]
TMODE_SEL. Test mode selection
This function is for testing only. The default value must be
adopted for normal operation.
6’b0
30
2[9]
5[1]
MDI_MDIX_EN. Auto MDIMDIX enable
1: Auto MDIMDIX (default)
0: fixed MDI
Note: IP178C always uses a MDIX transformer.
P(1)
30
2[8]
5[0]
Reserved
P(0)
30
2[7]
4[7]
Reserved
1’b0
30
2[6]
4[6]
MAC_MODE_EN.
External MAC mode
1: MAC mode
0: PHY mode
P(0)
30
2[5]
4[5]
RMII_EN.
External MII mode
1: RMII
0: MII
P(0)
30
2[4:3]
4[4:3]
OP1
P(0,0)
30
2[2:1]
4[2:1]
OP0
P(0,0)
30
2[0]
4[0]
BI_COLOR
P(0)
OP1
OP0
FORCE_
MODE
Description
0
0
x
0
Port1, 3, 5, 7 nway with all capability
1
0
x
0
Port7 full duplex, port1, 3, 5 nway with all capability
1
1
x
0
Port7 half duplex, port1, 3, 5 nway with all capability
x
0
0
0
Port0, 2, 4, 6 nway with all capability
x
1
0
0
Port6 full duplex, port0, 2, 4 nway with all capability
x
1
1
0
Port6 half duplex, port0, 2, 4 nway with all capability
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