ENC28J60T Просмотр технического описания (PDF) - Microchip Technology
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ENC28J60T Datasheet PDF : 96 Pages
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ENC28J60
FIGURE 1-2:
TYPICAL ENC28J60-BASED INTERFACE
MCU
I/O
SDO
SDI
SCK
INTX
CS
SI
SO
SCK
INT
ENC28J60
TX/RX
Buffer
MAC
PHY
TPIN+/-
TPOUT+/-
RJ45
ETHERNET
TRANSFORMER
LEDA
LEDB
TABLE 1-1: PINOUT I/O DESCRIPTIONS
Pin Number
Pin Name SPDIP,
SOIC, SSOP
QFN
Pin Buffer
Type Type
Description
VCAP
1
VSS
2
CLKOUT
3
INT
4
25
P
— 2.5V output from internal regulator. A low Equivalent Series Resistance
(ESR) capacitor, with a typical value of 10 μF and a minimum value of
1 μF to ground, must be placed on this pin.
26
P
— Ground reference.
27
O
— Programmable clock output pin.(1)
28
O
— INT interrupt output pin.(2)
NC
SO
SI
SCK
CS
RESET
VSSRX
TPIN-
TPIN+
RBIAS
VDDTX
TPOUT-
TPOUT+
VSSTX
VDDRX
VDDPLL
VSSPLL
VSSOSC
OSC1
OSC2
VDDOSC
LEDB
LEDA
VDD
Legend:
Note 1:
2:
3:
4:
5:
5
1
O
— Reserved function; always leave unconnected.
6
2
O
— Data out pin for SPI interface.(2)
7
3
I
ST Data in pin for SPI interface.(3)
8
4
I
ST Clock in pin for SPI interface.(3)
9
5
I
ST Chip select input pin for SPI interface.(3,4)
10
6
I
ST Active-low device Reset input.(3, 4)
11
7
P
— Ground reference for PHY RX.
12
8
I
ANA Differential signal input.
13
9
I
ANA Differential signal input.
14
10
I
ANA Bias current pin for PHY. Must be tied to ground via a resistor (refer to
Section 2.4 “Magnetics, Termination and Other External Components”
for details).
15
11
P
— Positive supply for PHY TX.
16
12
O
— Differential signal output.
17
13
O
— Differential signal output.
18
14
P
— Ground reference for PHY TX.
19
15
P
— Positive 3.3V supply for PHY RX.
20
16
P
— Positive 3.3V supply for PHY PLL.
21
17
P
— Ground reference for PHY PLL.
22
18
P
— Ground reference for oscillator.
23
19
I
ANA Oscillator input.
24
20
O
— Oscillator output.
25
21
P
— Positive 3.3V supply for oscillator.
26
22
O
— LEDB driver pin.(5)
27
23
O
— LEDA driver pin.(5)
28
24
P
— Positive 3.3V supply.
I = Input, O = Output, P = Power, DIG = Digital input, ANA = Analog signal input, ST = Schmitt Trigger
Pins have a maximum current capacity of 8 mA.
Pins have a maximum current capacity of 4 mA.
Pins are 5V tolerant.
Pins have an internal weak pull-up to VDD.
Pins have a maximum current capacity of 12 mA.
DS39662B-page 4
Preliminary
© 2006 Microchip Technology Inc.
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