W5100 Ver la hoja de datos (PDF) - Unspecified
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W5100 Datasheet PDF : 70 Pages
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1.1 MCU Interface Signals
Symbol
/RESET
ADDR14-0
DATA7-0
/CS
/INT
/WR
/RD
Type
I
I
I/O
I
O
I
I
Pin No
59
38, 39,
40, 41,
42, 45,
46, 47,
48, 49,
50, 51,
52, 53,
54
19, 20,
21, 22,
23, 24,
25, 26
55
56
57
58
Description
RESET
This pin is active Low input to initialize or re-
initialize W5100.
By asserting this pin low for at least 2us, all internal
registers will be re-initialized to their default states.
ADDRESS
These pins are used to select a register or memory.
Address pins are internally pulled down.
DATA
These pins are used to read and write register or
memory data.
CHIP SELECT
Chip Select is for MCU to access to internal registers
or memory. /WR and /RD select direction of data
transfer. This pin is active low.
INTERRUPT
This pin Indicates that W5100 requires MCU
attention after socket connecting, disconnecting,
data receiving or timeout. The interrupt is cleared
by writing IR(Interrupt Register) or Sn_IR (Socket nth
Interrupt Register). All interrupts are maskable. This
pin is active low.
WRITE ENABLE
Strobe from MCU to write an internal
register/memory selected by ADDR[14:0]. Data is
latched into the W5100 on the rising edge of this
input. This signal is active low.
READ ENABLE
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