5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
REVERSE MII
Transpower HB726
Pulse H1102
Bel fuse S558-5999-U7
YCL PT163020
LINK/ACT
SPEED
DUPLEX
COLLISION
Note 1:
R6, R7, R32 and R33 should
be placed close to
KS8721BL/ SL
OR
MIC5207-3.3BM5
MIC5216 in 500mA install R2 100K, do not install C21
MIC5207 is 180mA install C21, do not install R2 100K
Place close to
pin 13. VDDC
Place close to
pin 38. VDDRCV
1849 Fortune Dr. San Jose, CA. 95131
http://www.micrel.com
1.1
B
2
2
KS8721BL/SL Demo Board
Title
Size
Document Number
Rev
Date:
Sheet
of
RXD3
RXD2
RXD1
RXD0
RXDV
RCLK
TCLK
COL
CRS
TXD3
TXEN
TXD0
TXD2
COL1
CRS1
MRXD2
MRXD2
MRXD3
MRXD3
MRXD1
MRXD1
MRXD0
MRXD0
TXD1
INT
INT
TXER
RXDV1
RXDV1
MDIO
MDC
VCC
V2.5A
V2.5A
V2.5A
V2.5A
V2.5A
V2.5A
V2.5PLL
V2.5PLL
V3.3
V2.5
V3.3
V3.3
V3.3
V3.3
V2.5
V3.3
V3.3
V3.3
V3.3
V3.3
V3.3
V2.5
V3.3
R6
49.9 1%
C21
0.1uf
C18
0.1uf
J10
JUMPER
R16
3K
J1
Male MII connector
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
VCC
MDIO
MDC
RXD3
RXD2
RXD1
RXD0
RX_DV
RX_CLK
RX_ER
TX_ER
TX_CLK
TX_EN
TXD0
TXD1
TXD2
TXD3
COL
CRS
VCC
VCC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
VCC
R7
49.9 1%
+
C6
100uf
C13
0.1uf
C8
0.1uf
C14
0.1uf
J13
J
U
M
PER
R2
100K
R21
1K
U2
KS8721
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
MDIO
MDC
RXD3/PHYAD1
RXD2/PHYAD2
RXD1/PHYAD3
RXD0/PHYAD4
VDDI/O
GND
RXDV/CRSDV/PCS_LP
RXC
RXER/ISO
GND
VDDC
TXER
TXC/REF_CLK
TXEN
TXD0
TXD1
TXD2
TXD3
COL/RMII
CRS/RMII_LP
GND
VDDI/O
INT#/PHYAD0
LED0/TEST
LED1/SPD100/noFEF
LED2/DUPLEX
LED3/NWAYEN
PD#
VDDRX
RX-
RX+
FXSD/FXEN
GND
GND
REXT
VDDRCV
GND
TX-
TX+
VDDTX
GND
GND
X0
X1
VDDPLL
RST#
C15
0.1uf
R3
33
C1
0.1
R22
1K
J14
J
U
M
PER
C20
1000pf/2kv
C16
0.1uf
R4
33
C3
0.1
R8
33
R9
33
R23
1K
R10
33
J15
J
U
M
PER
R11
33
R12
33
J2
CON8
1
2
3
4
5
6
7
8
R14
33
R15
33
J16
J
U
M
PER
R20
1K
R44
4.7K
C9
10UF
R1
10K
Y1
25Mhz
R47
4.7K
R41
4.7K
D1
1N4148
1
2
U1
MIC5216-3.3BM5
1
3
2
4
5
VIN
EN
GND
BYP
OUT
R42
4.7K
+
C23
47uf
R43
4.7K
R33
49.9 1%
R30
75
LED0
LED
1
2
R27
220
LED1
LED
1
2
R32
49.9 1%
J3
JUMPER
LED2
LED
1
2
R17
75
R28
220
LED3
LED
1
2
J4
JUMPER
J11
JUMPER
R26
75
J12
J
U
M
PER
J5
JUMPER
R29
220
+
C26
10uf
R50
4.7K
C17
0.1uf
C24
0.01uf
J6
JUMPER
C12
22P
TP1
CON1
1
R31
220
+
C7
47uf
C11
22P
J7
JUMPER
C10
0.1uf
FB1
FBEAD
1
2
R18
75
T1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
TD+
TC
TD-
NC
NC
RD+
RC
RD-
RX-
RCM
RX+
NC
NC
TX-
TCM
TX+
+
C2
47uf
FB2
FBEAD
1
2
C4
0.1uf
R40
4.7K
C22
0.1uf
R13
6.49K 1%
C19
0.1uf
