AM79C873 Advanced Micro Devices, AM79C873 Datasheet - Page 43

• Manufacturer Part Number: AM79C873
• Description: NetPHY -1 10/100 Mbps Ethernet Physical Layer Single-Chip Transceiver with 100BASE-FX Support
• Manufacturer: Advanced Micro Devices

(BGRES)
(SPEED)
(BGRET)
NetPHY-1 MII Example Schematic (Continued)
(AGND)
Pin 43
Pin 36
Pin 35
Pin 31
*
R23
#87
#86
* Do Not Load
TX CKT POWER/GROUND AREA
C10
.01u
R25
33
.1u
C2
#18
#21
BYPASS CAPACITOR FOR U1
COLLED
RXLOCK
R20
510
FDXLED
CLK25M
Physically place caps on SOLDER SIDE.
RXLED
SPEED
TXLED
SIGOK
5.76K 1%
C11
LILED
Locate near U1’s VCC & Ground Pins
.1u
SD
VCC
D12
Digital Ckt Power & Ground Area
VCC_T
VCC
VCC_R
2N2222
.1u
C24
#74
#73
GND
LED
Q1
#24
#27
.1u
C3
C12
10u
10M
LED
D11
Place caps as close as
No traces or power near this area
14
.1u
C25
possible to U1 pins.
8
#62
#61
RX CKT POWER/GROUND AREA
100M
#31
#28
OSC1
+VDD
OUT
25M
(SOLDER SIDE)
LED
LED
LED
LED
D2
D4
D7
D9
.1u
GND
VCC
C4
C13
.01u
1uH
L1
C27
.1u
#49
#52
GND
LED
LED
LED
LED
LED
LED
NC
D10
R19
820
D1
D3
D5
D6
D8
.1u
C5
#34
#33
GND
C14
C28
1
7
.1u
.1u
#40
#39
L2
VCC
VCC
C6
GND
.1u
1uH
GND
GND
Place caps close to U1 pins
by each cap. Physically place cap on SOLDER SIDE.
VCC
P R E L I M I N A R Y
#68
#67
GND
GND
VCC
RP1
470
1
2
3
4
5
6
6
5
4
3
2
1
C7
C19
10u
RP2
470
.1u
#100
# 01
Am79C873
C20
.1u
TP4
TP5
RXER
TP10
TP2
TP3
TP8
#7
#6
TXD0
RXCLK
RXD3
RXD2
RXD1
C21
.01u
TP1
TP7
TP9
# as shown by number
MDC
RXDV
CRS
TXEN
#11
RXD0
GND
#8
MDIO
TP6
TXCLK
COL
C22
.1u
TXD3
TXD2
NetPHY-1 Evaluation Board
Advanced Micro Devices
Title
Date:
Size Document Number
TXER
TXD1
C9
.1u
B
TP11
TP13
netphy1_ev_0
Monday, May 04, 1998
VCC
SW DIP-8
75 1%
R21
RXIM
RXIP
SW DIP-8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
R15
R4
R6
R8
R13 33
33
SW2
SW1
33
33
33
33
R11
R12
R16
RJ45
8
7
6
5
4
3
2
1
PE68515
R7
J2
16
15
14
13
12
11
10
16
15
14
13
12
11
10
9
9
VCC
R5
U2
33
8
7
6
5
4
3
2
1
BPSCR
33
BPAGN
OPMD2
R10
33
33
33
VCC
PHAD0
R14
33
10
11
12
13
14
15
16
NODEB
PHAD3
9
XTLB
Sheet
TMODE
OPMD1
PHAD2
OPMD0
R17
10
11
12
13
14
15
16
OPMD3
9
PHAD1
PHAD4
10SER
GND
GND
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
BP45B
MII CON
TXOM
TXOP
75 1%
1
J1
75 1%
R22
R18
RP9_1K
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
2
4
6
8
of
RP7_1K
10
8
7
6
5
4
3
2
1
RP4
9
8
7
6
5
4
3
2
1
RP3
.1u/1KV
1
VCC
TP12
TP14
C8
GND
GND
VCC
Rev
2.0
43