78Q2120C09
MII Evaluation Board Design Kit
User Manual
fg
© 2007 Teridian Semiconductor Corporation, Proprietary and Confidential
- 8 -
Rev_1.2
78Q2120C09 Evaluation Board Schematic – MII Interface
Note: This demo
board schematic is
only applicable for
the 78Q2120C09
revision.
GND
GND
RXD0
R1
49.9
1%
0603
TXD0
TXEN
RXD1
R11
100
0603
R29
10K
0603
SW1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
PCSBP
LED10
C1
0.1
0603
GND
/RST
PHYAD4
R16
10K
0603
R30
10K
0603
C11
39PF
0603
R15
10K
0603
PHYAD3
TXON
TXER
C5
0.01
0603
R27
10K
0603
INTR
XTLP
R21
10K
0603
TXD2
RXDV
MDIO
LEDCOL
LED100
68 ohm Impedance Traces
TXCLK
TXOP
R28
10K
0603
PWRDN
XTLN
RXD1
PHYAD0
R20
10K
0603
RXIP
TXD3
GND
J1
CON3
1
2
3
R31
10K
0603
TXON
GND
C8
0.01
0603
GND
MDIO
TXER
R1
PHYAD2
LEDTX
R32
10K
0603
R4
49.9
1%
0603
C10
0.1
0805
VCC
GND
TXCLK
R0
ISO
Y1
25.000MHZ
50ppm
R5
100
0603
R34
10K
0603
RXDV
U1
78Q2120C09-CGT
TSC
LQFP64
28
27
32
31
30
29
24
19
20
21
22
64
63
4
6
59
58
53
10
43
11
52
51
56
54
62
61
41
60 55
18
33
23
17
34
9
8
26
25
7
47
44
45
46
49
48
50
57
40
39
38
37
36
12
13
14
15
16
5 3
35
42
2
1
TXEN
TXCLK
TXD3
TXD2
TXD1
TXD0
RXCLK
RXD3
RXD2
RXD1
RXD0
PCSBP
VCC
CKIN
RST
XTLP
XTLN
GND
GND
VCC
VCC
RXIP
RXIN
NC2
NC1
TXON
TXOP
VCC
GND GND
MDC
COL
RXDV
MDIO
CRS
GND
VCC
TXER
RXER
PWRDN
ANEGA
TECH2
TECH1
TECH0
LEDFDX
LEDBT
RPTR
VCC
LEDL
LEDTX
LEDRX
LEDCOL
LEDBTX
PHYAD4
PHYAD3
PHYAD2
PHYAD1
PHYAD0
GND GND
INTR
GND
ISO
ISODEF
LEDTX
RXER
GND
R22
10K
0603
TC
R2
VCC
TECH0
R25
10K
0603
TXOP
R18
10K
0603
MDC
R23
10K
0603
100 ohm Diff. Impedance Traces
TXD1
ISODEF
R6
100
0603
GND
R3
RE
C3
0.1
0603
R2
49.9
1%
0603
RXIN
CKIN
VCC
TECH2
C12
39PF
0603
R26
10K
0603
TXD1
LEDL
C9
0.01
0603
CRS
TXEN
VCC
LEDCOL
ANEGA
R8
100
0603
VCC
RXD0
RXIP
PHYAD1
R7
100
0603
RXER
RXD2
C2
0.1
0603
LEDFD
GND
Use 33 ohm for maximum drive
GND
R33
10K
0603
SW2
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
GND
LEDRX
RPTR
R13
100
0603
R24
5.1K
0603
RST
LEDFD
LED10
RXCLK
VCC
TXD2
GND
GND
RXIN
R3
49.9
1%
0603
INTR
R9
100
0603
RC
VCC
RXCLK
RXD3
TXD3
RXD3
COL
GND
TXD0
TECH1
C4
0.1
0603
LEDL
RXD2
C6
0.1
0603
MDC
C7
0.1
0603
GND
LEDRX
LED100
GND
R19
10K
0603
