Datasheet

 2018 Microchip Technology Inc. DS00002813A-page 5
KSZ8721BL/SL
2.0 PIN DESCRIPTION AND CONFIGURATION
FIGURE 2-1: 48-PIN SSOP (SM) AND 48-PIN LQFP (LQ) (TOP VIEW)
VDDIO INT#/PHYAD02524
GND LED0/TEST2623
13VDDC
TXER
TXC/REF_CLK
TXEN
TXD0
TXD1
TXD2
TXD3
COL/RMII
CRS/RMII_BTB
36 GND
GND
FXSD/FXEN
RX+
RX-
VDDRX
PD#
LED3/NWAYEN
LED2/DUPLEX
LED1/SPD100
35
34
33
32
31
30
29
28
27
14
15
16
17
18
19
20
21
22
GND REXT3712
RXER/ISO VDDRCV3811
1MDIO
MDC
R3D3/PHYAD1
RXD2/PHYAD2
RXD1/PHYAD3
RXD0/PHYAD4
VDDIO
GND
RXDV/PCS_LPBK
RXC
48 RST#
VDDPLL
XI
XO
GND
GND
VDDTX
TX+
TX-
GND
47
46
45
44
43
42
41
40
39
2
3
4
5
6
7
8
9
10
TXD0
TXEN
TXC/REF_CLK
TXER
VDDC
TXD1 TXD2 TXD3
MDIO
MDC
RXD1/PHYAD1
RXD2/PHYAD2
RXD1/PHYAD3
RXD0/PHYAD4
VDDIO
GND
13 14 15 16 17 18 19 20
1
2
3
4
5
6
7
8
RXDV/PCS_LPBK
RXC
RXER/ISO
GND
9
10
11
12
COL/RMII
CRS/RMII_BTB
GND
VDDIO
21 22 23 24
GND
GND
FXSD/FXEN
RX+
RX–
VDDRX
PD#
LED3/NWAYEN
36
35
34
33
32
31
30
29
LED2/DUPLEX
LED1/SPD100
LED0/TEST
INT#/PHYAD0
28
27
26
25
GND X0 X1 VDDPLL RST# GND VDDTX TX+
48 47 46 45 44 43 42 41
Tx– GND VDDRCV REXT
40 39 38 37
48-Pin SSOP (SM)
48-Pin LQFP (LQ)