78Q2123/F1 Maxim Integrated, 78Q2123/F1 Datasheet - Page 32

• Manufacturer Part Number: 78Q2123/F1
• Description: Ethernet ICs
• Manufacturer: Maxim Integrated

Specifications of 78Q2123/F1

• Rohs: yes

78Q2123/78Q2133 Data Sheet
32
MDIO
MDC
RXD3
RXD2
RXD1
RXD0
RXDV
RXCLK
RXER
TXER
TXCLK
TXEN
TXD0
TXD1
TXD2
TXD3
COL
CRS
R4
100
R6
100
R11
100
R12
100
R22
100
C5
0.1uF
R5
100
R7
100
R10
100
R13
100
R23
100
VCC
VCC
10
11
12
13
14
15
16
9
VCC
VCCD
GNDD
RX_DV
RX_CLK
RX_ER
TX_ER
TX_CLK
TX_EN
Figure 7: Application Diagram for 78Q2123/78Q2133
U1
R2
5.1K
78Q2123
78Q2133
R24
10k
78Q2123
C15
0.1uF
C13
27pF
PB_GND
LED 1
LED 0
VCC
25.000MHz
TXON
TXOP
INTR
GND
RXIP
RXIN
XTLN
VCC
C1
0.1uF
Y 1
0.01uF
C2
33
32
31
30
29
28
27
26
25
D1
D2
C13 and C14 must be calibrated
in actual application board for
25.000MHz +/-50ppm.
C14
27pF
R1
R3
680
680
R8
49.9
R14
49.9
R9
49.9
R15
49.9
VCC
1
2
3
4
5
6
7
8
C3
C11
0.01uF
0.01UF
TD+
TDCT
TD-
NC1
NC2
RD+
RDCT
RD-
T1
TLA-6T118LF
VCC
VCC
RXCT
TXCT
NC4
NC3
C4
RX+
C12
0.1uF
TX+
RX-
0.1UF
TX-
16
15
14
13
12
11
10
9
R16
75
R17
75
R18
75
R19
75
R20
75
R21
75
INTR
8
7
6
5
4
3
2
1
C10
0.1uF
1.5kV
J1
RJ45
DS_21x3_001
Rev. 1.6