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Details, datasheet, quote on part number:HMS91C7432
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Datasheet text preview:
Hynix semiconductor
INTRODUCTION
From now on, you can hook your product onto the inter-net directly. Put the PC aside, HMS91C7432 do all the jobs that the PC do for inter-net connection.
HMS91C7432 is a CMOS IC with a complete TCP/IP protocol suite to facilitate inter-net connection for embedded application. The built-in email engine can transform any ASCII message to standard email format. It sends and receives email; conduct the whole log on process automatically. Built-in PPP protocol handle user-ISP handshaking and authentication process automatically. The HMS91C7432 also includes the MODEM driver, no code should write to drive the MODEM (parameter of modem must be transferred by the host to make HMS91C7432 works with your modem). Using HMS91C7432 is easy, a simple 8 bit parallel port (8 bit data plus 4 control lines) bridge the IC with your application. A serial DTE port is ready for directly connect to an onboard modem or through DTE interface to a serial modem. Make your product inter-net able, just add an HMS91C7432 on your BOM.
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Hynix semiconductor
HMS91C7432 features and functions
Implementation of the complete TCP/IP protocol suite Built-in Email sending and reception function. Standard SMTP protocol stack. Standard POP3 protocol stack. Standard PPP protocol stack to facilitate dial-up network log on. Standard DNS protocol stack, resolve URL with dynamic DNS server. Serial modem driver built-in. Support V.90 56Kflex modem or lower. 8 bit parallel interface to the user application. Serial DTE port for ease of modem interface. 5V or 3.3V operation voltage 20 pins SOP package
Detail description of HMS91C7432 function and its application
TCP/IP protocol suite is the key to inter-net access. Email; Home Page materials and all the data traffic on the inter-net are carry out by using the TCP/IP well defined format. Time before HMS91C7432 exist, most inter-net connection were to be handled by the PC. Hand held devices and equipments must be attached to the PC to get access to the inter-net. Now the era of "PC-free" inter-net connection has come. With HMS91C7432, you can make your product be able to send and receive email; surf on the WWW and even "TALK" to another device through the inter-net, by just plugging the telephone line onto it. The core of the HMS91C7432 is a complete TCP/IP protocol suite. Files and messages pass to the HMS91C7432 will be transformed into the appropriate format and packets to conform the inter-net standard. This transformation is transparent to the user's application. On top of the TCP/IP core, there is an Email engine built-in. User's program just needed to inform the HMS91C7432 an email is going to send and follow with the email body. HMS91C7432 will then wake up the modem and dial the ISP to log on the mail server. The mail will be sent when log on has success. HMS91C7432 complete this whole process fully automatic. Reception of Email is as simple as getting email on the PC. The application program send a "Receive Email" command to the HMS91C7432, it dial up the ISP and log on the server, then it check and download any email automatically. Each message will be stored in the RAM buffer, HMS91C7432 will notify the application program an email has come and waiting for retrieve. The built-in PPP module handles the "Log on process". This is a standard protocol to pass the user's account ID and the password to the ISP. This module handles the authentication and "Handshaking". User's program just pass the user's ID and password to HMS91C7432 and the PPP do it all. HMS91C7432 (later version only) also equip with a FTP module to facilitate file transfer and file downloading from the FTP site. This function is especially good for remote system update and game download for hand-held game inter-net access. The standard serial DTE interface on the HMS91C7432 ease the modem connection. The built-in modem driver support V.90 and 56K flex dual modem or lower. HMS91C7432 is controlled by an 8 bit data/command port. This port accepts command passed by the host MCU. Incoming and outgoing message will be passed between the host and the HMS91C7432 through this port as well.
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Hynix semiconductor
Specifications of HMS91C7432
The HMS91C7432 TCP/IP communication controller is manufactured in advance CMOS process. The HMS91C7432 implement complete TCP/IP protocol suite includes PPP; IP; ICMP;TCP; UDP; DNS; SMTP; POP3 protocol and additionally a general MODEM driver. The HMS91C7432 is built-in with 96Kb SRAM (12K x 8) for communication and buffering, A full duplex UART as DTE for ease of serial modem connection. The HMS91C7432 has an 8 bits Data/Command port and 4 control pins to facilitate control and communication between the Host MCU and the modem. There are only 20 simple commands, each of which is a single byte long, to establish and to complete the whole internet communication. 45 respond codes for the Host MCU to monitor the communication status. Extremely low external component count. Very low power consumption.
Features :
Implement TCP/IP protocol suit. SMTP for sending email POP3 for receiving email PPP for dialup network log on and hand shaking. DNS protocol to resolve IP address from URL Full static operation Test Full Duplex 56K/115Kbps UART VCC port for modem DTE connection. Speed range up to 22.118MHz 8 bits Bi-directional Data/Command bus. Modem driver included Power control modes Active mode Power-down mode Dissipating Current Active 25mA Power-down 10uA max. 20 single byte easy commands 45 respond codes Package type 20-SOP
D0 D1 D2 D3 D4 D5 D6 D7
2 3 4 5 6 7 8 9 10
HMS91C743 2 SOP 20
20 19 18 17 16 15 14 13 12 11
RXD TXD Reset Strobe WR INT Wait Xtal 2 Xtal 1 Vss
Operating voltage Dissipating Current Active mode Power down mode Oscillation Frequency Operating Temperature Storage Temperature
3.3V +/- 10% 25 mA 10uA max. 11.0592 Mhz -40 to +85¢XC -65 to +150¢XC
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