Preliminary Version
NeChip Family
Technical Data Of NeChip Series
Category
Description
CPU, Memory
CPU:CXT32SI10/12/14/16/18
Memory:
Rom: 256K/512KB + 32kB Boot
SRAM: 80K/128/256KB
Up to 8MB for NeChip-E series
Firmware
Reset Circuit
Upgradeable via serial port or tftp
Internal 200ms power-up reset pulse. Power-drop reset triggered at 2.7V. External reset
input causes an internal 200ms reset.
Serial Interface
CMOS (Asynchronous) 3.3V-level signals
Rate is software selectable (110 bps to 921600 bps)
Offer 1/2/3/4/5 high speed serial ports
Serial Line Formats
7 or 8 data bits, 1-2 Stop bits, Parity: odd, even, mark, space, none
Modem Control
CTS, RTS
Flow Control
XON/XOFF (software), CTS/RTS (hardware), none
Programmable I/O
Up to 10 PIO pins (software selectable) sink or source 4mA max.
Network Interface
Ethernet 10BASE-T or 100BASE-TX (auto-sensing)
Compatibility
Protocols Supported
Ethernet: Version 2.0/IEEE 802.3
ARP, UDP/IP, TCP/IP, PING/ICMP, DHCP, BOOTP, Auto IP,TFTP, SNTP ,TELNET ,HTTP，
DNS,SMTP, PPP, LCP, PAP, CHAP, IPCP, PPPoE
SSL/TLS,HTTPS ,SNMP(Optional)
FTP Server/Client (Optional)
Protocol service
DNS
Why dns?
Actually, the remote IP is always dynamic (not fixed) when to transmit data through internet
in the real application, how to get and refresh the remote ip when it has been chanced?
Nechip can provide such solution for such application. NeChip can support dns to query for
IP with a domain name point to your remote machine.
Especially, nechip can auto-detect and diagnose the connection status in time, check and
refresh the remote IP for new connection if the remote IP is changed.
This function will solve the problem in the real internet application with dynamic remote IP
SMTP
Why SMTP?
As we know that smtp is the basic protocol to transmit email. How is this protocol used in the
real M2M application?
NeChip
series
provide such
protocol
to trigger
emails
for
alerts. When
the
terminal/customer
’s devices detect some warning/important evens, but the data connection
is blocked or remote host is not available. How to report such warnings to the host or device
manager. Emails will become the available way to notify the manager in time.
PPP
Why PPP?
Ppp stacks include several protocols, such as LCP, PAP, CHAP, IPCP.
ISDN:
In the traditional industrial applications, remote devices are connected through telephone
lines.
Nechip can support such application by attaching an external modem to any uart of nechip,
Then nechip will dial up automatically by internal ppp machine
GPRS:
GSM is the worldwide wireless communication network which can provide internet service
for GSM terminals, so gsm cellphones can upload and download data from internet. In M2M
applications, the distributed devices also can be connected and communicate with each
other through gsm networking. It can reduce the cost on building wired channel.
Nechip can support driver the external gprs module directly through serial port
(Refer to application for more details)
PPPoE
Why PPPoE?
Nechip can support connect to ADSL modem directly and dial up automatically without any
router. Simple the method to internet and reduce the cost on an additional router As internet
server.
Oct 2008
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