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WIZ550io
WIZ550io
Overview
WIZ550io is the auto configurable ethernet controller module that includes W5500 (TCP/IP hardwired
chip and PHY embedded), Transformer and RJ45.
A unique real MAC address embedded in it and it has auto network configuration capability. When just
powered on, WIZ550io initializes itself with embedded real MAC and default IP address(192.168.1.2)
and can be pinged from user’s computer. So, user doesn’t need to write MAC and network information
like IP address, Subnet mask and Gateway address. The WIZ550io is an ideal product for users who
want to develop their Internet enabling systems rapidly.
For more information about W5500 inside WIZ550io, refer to the W5500 Datasheet.
We hope WIZ550io is helpful to you.
2013/08/28 09:00 · jameskim
Hardware Pins of WIZ550io
Pin Map
Wiki site - http://wizwiki.net/wiki/
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Pin Description
Pin No. I/O Pin Name Description
1 P
GND
Ground
2 P
GND
Ground
SPI Master Out Slave In
3
I
MOSI
This pin is used for SPI MOSI signal pin
SPI Master In Slave Out
4 O
MISO
This pin is used for SPI MISO signal pin
J1
SPI Clock
5
I
SCLK
This pin is used for SPI Clock Signal pin
SPI Slave Select
6 O
SCS
This pin is used for SPI Slave Select Signal Pin when using SPI interface
7 P
3V3D Power: 3.3V Power Supply
8 P
3V3D Power: 3.3V Power Supply
Pin No. I/O Pin Name Description
http://wizwiki.net/wiki/
Printed on 2013/10/08 22:26
2013/10/08 22:26
1
P
2
I
J2 3
O
4
I
5
O
6
P
3/5
WIZ550io
3V3D
Power: 3.3V Power Supply
READY
This pin is asserted to low after power on.
Then when nRESET is activated, WIZ550io does auto
RDY
configuration with embedded MAC and default IP address inside it.
After all configuration is finished, WIZ550io raises this pin to HIGH to
inform that the configuration of WIZ550io is completed.
Host processor can only control WIZ55oio when RDY pin is HIGH.
Reset: Active low
This pin is to initialize WIZ550io.
nRESET It should be held at least 500us after asserted to LOW,
and wait for at least 150ms after changed to HIGH
until WIZ550io itself is configured.
NC
Not Connected
Interrupt: Active low
This pin indicates that W5500 inside WIZ550io requires
MCU's attention because of event like socket connection,
nINT
disconnection, data receiving timeout and WOL(Wake on LAN).
The interrupt is cleared by writing IR register or Sn_IR.
All interrupts are maskable.
GND
Ground
Caution)
Some users may want to reinitialize W5500 inside WIZ550io with SW reset, not handling nRESET pin.
But it makes WIZ550io hung up because all information in registers of W5500 would be cleared. A tiny
MCU inside WIZ550io initializes W5500 with embedded MAC address and a default IP address and
Initialization is triggered by nRESET.
Then in case of using SW reset, it clears all registers in W5500 and doesn't make WIZ550io initialize
itself. It makes all information inside WIZ550io lost and WIZ550io hung up.
So, we recommend HW reset instead of SW reset. Nevertheless if users want to use SW reset, we
recommend that they read MAC address and network information including IP address, Subnet mask
and Gateway address before they do SW reset and they write those information to WIZ550io after SW
reset.
2013/08/28 09:08 · jameskim
SPI Operations
There is a W5500 inside WIZ550io. Therefore SPI operation of WIZ550io follows one of W5500. For
more information about SPI operation of WIZ550io, please refer to W5500 Datasheet.
●
●
W5500 Datasheet(English)
W5500 Datasheet(Korean)
2013/08/28 09:12 · jameskim
Wiki site - http://wizwiki.net/wiki/
Last update: 2013/08/28 09:29
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Timing Diagram
Reset Timing
Symbol
Description
Min Max
TRC
Reset Cycle Time
500us TPL
Internal Auto Configuration Time - 50ms
SPI Timing
Symbol
Description
Min Max Units
Fsck SCLK Clock Frequency - 80 MHz
TWH SCLK High duration
6
ns
TWL SCLK Low duration
6
ns
TCS nSCS High duration
5
ns
2013/08/28 09:13 · jameskim
Dimension
http://wizwiki.net/wiki/
Printed on 2013/10/08 22:26
2013/10/08 22:26
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2013/08/28 09:15 · jameskim
Related Products
●
●
●
ioShield-A
ioShield-K
ioShield-L
2013/08/28 09:16 · jameskim
From:
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Permanent link:
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Last update: 2013/08/28 09:29
Wiki site - http://wizwiki.net/wiki/
WIZ550io