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hynix semiconductor 1 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.
hynix semiconductor 2 HMS91C7432 features and functions z implementation of the complete tcp/ip protocol suite z built-in email sending and reception function. z standard smtp protocol stack. z standard pop3 protocol stack. z standard ppp protocol stack to facilitate dial-up network log on. z standard dns protocol stack, resolve url with dynamic dns server. z serial modem driver built-in. z support v.90 56kflex modem or lower. z 8 bit parallel interface to the user application. z serial dte port for ease of modem interface. z 5v or 3.3v operation voltage z 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 users application. on top of the tcp/ip core, there is an email engine built-in. users 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 users account id and the password to the isp. this module handles the authentication and handshaking. users program just pass the users 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.
hynix semiconductor 3 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 : y implement tcp/ip protocol suit. y smtp for sending email y pop3 for receiving email y ppp for dialup network log on and hand shaking. y dns protocol to resolve ip address from url y full static operation y full duplex 56k/115kbps uart port for modem dte connection. y speed range up to 22.118mhz y 8 bits bi-directional data/command bus. y modem driver included y power control modes 9 active mode 9 power-down mode y dissipating current ? active 25ma ? power-down 10ua max. y 20 single byte easy commands y 45 respond codes y package type 20-sop y operating voltage 3.3v +/- 10% dissipating current active mode 25 ma power down mode 10ua max. oscillation frequency 11.0592 mhz operating temperature -40 to +85 c storage temperature -65 to +150 c d0 d1 d2 d3 d4 d5 d6 d7 te st vcc rxd txd reset strobe wr int wait xtal 2 xtal 1 vss HMS91C7432 sop 20 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11
hynix semiconductor 4 specifications of HMS91C7432 mnemonic pin type name and function vss 14 ground : 0v reference. vcc 9 power supply : this is the power supply voltage for normal, and power-down operation. d0 to d7 1 C 8 i/o data/command port : this is an 8 bit bi-directional i/o port with internal pull-ups. this port is for data transfer between host mcu, it also serves as command reception and responds code issuance port from and to the host mcu. wait 14 out wait : handshake signal. when low it indicates that is ok to start a cycle (assert a strobe), when high it indicates that it is ok to end the cycle (de-assert a strobe). int 15 out int : active low output a request to the host mcu if data/respond code are to be sent. wr 16 in write : active low write enable pin. set this pin low for a write cycle. set this pin high for a read cycle. strobe 17 in strobe : data strobe signal. active low indicates a data_read or data_write operation is in process. rxd 20 in rxd : uart serial input port. txd 19 out txd : uart serial output port. reset 13 in reset : a high level on this pin for 2us while the oscillator is running resets the device. test 10 in test : test pin, should be stuck at zero when normal operation. xtal 1 11 in xtal1 : input to the inverting oscillator amplifier and input to the internal clock generator circuits. xtal 2 12 out xtal2 : output to the inverting oscillator amplifier. table 1. pin descriptions
hynix semiconductor 5 figure 1. data write cycle waveform wr strobe wait data[7:0] 1 2 3 4 5 6 valid data specifications of HMS91C7432 data write cycle phase transitions: 1. the write line is asserted and the data is output to the parallel port 2. the data strobe is asserted, since wait is asserted low 3. the port waits for the acknowledge from the HMS91C7432 (wait de-asserted) 4. the data strobe is de-asserted 5. the write cycle ends 6. wait is asserted low to indicate that the next cycle may begin data read cycle phase transitions: 1. the write line is set to high to indicate read request 2. the data strobe is asserted, since wait is asserted low 3. the port waits for the acknowledge from the HMS91C7432 (wait de-asserted) 4. the data strobe is de-asserted after data is stored and the read cycle ends 5. wait is asserted low to indicate that the next cycle may begin figure 2. data read cycle waveform wr strobe wait data[7:0] 1 2 3 4 5 valid data
hynix semiconductor 6 specifications of HMS91C7432 (ta = -20 to +85 , vcc = 5v 10%, vss = 0v) o dc characteristics symbol parameter unit limits vcc+0.5 -0.5 min max conditions test v v il input low voltage,except reset v ih1 input high voltage,xtal1 v ih input high voltage,except xtal1,reset 0.2vcc-0.1 0.7vcc vcc+0.5 v v v ol output low voltage,d0~d7,strobe, wr,int,wait 1.0 v v oh output high voltage, d0~d7,strobe, wr,int,wait i oh = -25 m a 0.75vcc v i il logical 0 input current, d0~d7,strobe, wr,int,wait v in = 0.45v m a -50 i tl logical 1-to-0 input current, d0~d7,strobe,wr,int,wait v in = 3.0v m a -650 i cc power supply current : active mode@11.0592mhz power-down mode @11.0592mhz 16 10 m a ma -0.5 v v il1 input low voltage,reset 0.2vcc+0.1 v ih2 input high voltage, reset 0.6vcc vcc+0.5 v i ol = 3.5ma -10 -65 vcc = 5v notes : 1. see figure 3 through 5 for icc test conditions. minimum vcc for power down is 2v. 2. under steady state (non-transient) conditions,i ol must be externally limited as follows : maximum i ol per port : 10ma maximum i ol per 8-bit port d0~d7,strobe,wr,int,wait : 15ma maximum total i ol for all output pins : 71ma if i ol exceeds the test condition,v ol may exceed the related specification.pins are not guaranteed to sink current greater than the listed test conditions. 0.7vcc
hynix semiconductor 7 specifications of HMS91C7432 (ta = -20 to +85 , vcc = 3.3v 10%, vss = 0v) o dc characteristics(cont.) symbol parameter unit limits vcc+0.3 -0.5 min max conditions test v v il input low voltage,except reset v ih input high voltage,except xtal1,reset 0.8 0.7vcc v v ol output low voltage,d0~d7,strobe, wr,int,wait 0.45 v oh output high voltage, d0~d7,strobe, wr,int,wait i oh = -20 m a 2.7 v i il logical 0 input current, d0~d7,strobe, wr,int,wait v in = 0.45v m a -50 i tl logical 1-to-0 input current, d0~d7,strobe,wr,int,wait v in = 2.0v m a -250 i cc power supply current : active mode@11.0592 power-down mode 10 10 m a ma i ol = 1.6ma v -6 -40 vcc = 3.3v -0.5 v v il1 input low voltage, reset 0.8 vcc+0.3 v ih1 input high voltage,xtal1 0.7vcc v vcc+0.3 v ih2 input high voltage,reset 0.6vcc v
hynix semiconductor 8 specifications of HMS91C7432 dc characteristics(cont.) vcc icc vcc reset xtal2 xtal1 vss (nc) clock signal figure 3. icc test condition,active mode vcc icc reset xtal2 xtal1 vss (nc) figure 4. icc test condition,power down mode all other pins are disconnected. all other pins are disconnected. vcc-0.5 0. 5v 0.7vcc 0.2vcc-0.1 tchcl tclcx tclch tchcx tclcl figure 5. clcok signal wavefoerm for icc tests in active mode tclch = tchcl = 5ns notes : 1. icc(active mode) is measured with: xtal1 driven with tclch = tchcl = 5ns, vil = vss + 0.5v, vih = vcc - 0.5v, x2 = n.c. reset = vcc, all other pins are disconnected. icc would be slightly higher if a crystal oscillator is used (appr. 1ma) 2. icc(power down mode) is measured with: xtal1 = vss, xtal2 = n.c., reset = vss, all other pins are disconnected.
hynix semiconductor 9 specifications of HMS91C7432 ac electrical characteristics (ta = -20 o c to +85 o c, vcc = 5.0v + 10%, 3.3v + 10%, vss = 0v) high time symbol parameter min max min max unit 1/t clcl t chcx t clcx t clch t chcl osc. feq. low time rise time fall time 5.0v +/- 10% 3.3v +/- 10% mhz ns ns ns ns external clock drive 3.5 25 3.5 20 20 20 20 20 25 25 15 15 vcc- 0.45 t clcx t clch t chcx t clcl 0.7v 0.2vcc- t chcl external clock drive waveform
hynix semiconductor 10 specifications of HMS91C7432 data format for communication between HMS91C7432 and the host mcu sync 1 0x7e sync 2 0xfe contro l code length data 0 max 131 bytes for data data 130 data id data flag reserv ed data 0 max 128 bytes for data data 127 figure 3. data packet format field description : field description value sync 1 synconization for start of command/data packet. always set to 0x7e sync 2 as above always set to 0xfe control code this is the command code field in simple command mode. specify the type of command in complex command mode. in simple command mode 0x80 ~ 0x89. in complex command mode 0x00 ~ 0x06 refer to table 3 length specify the length of the data field. 0 ~ 131 data fields max. length of 131 octets for each packet containing structures for complex command data; setup parameters; reponse code and mail text contents in various communication mode accordingly. refer to the explaination of the communication mode. data id specify the types of data containing in the current packet. 0x00 ~ 0x34 refer to the table 4 data flag specify whether the current packet is the last packet or more packet follow. 0x00 more packet follow 0x01 last packet reserved reserved for test purpose. disregard this field in normal operation. not applicable data 0 ~ 127 contain max 128 octets of data single byte data table 2. field descriptions for communication packet
hynix semiconductor 11 specifications of HMS91C7432 table 3. listing of control code control code description direction 0x00 use this control code for complex command mode and mail text transfer. this is a bi-directional command code. HMS91C7432 uses this code to pass mails information and mails body to the host. bi-directional depending on the data id 0x01 for HMS91C7432 to issue complex command to the host to request for line connection info (refer to table 5 for info listing). HMS91C7432 to host 0x02 for HMS91C7432 to issue result code to the host (refer to table 6 for result code listing). HMS91C7432 to host 0x03 for HMS91C7432 to issue the connection status to the host (refer to table 7 for connection status listing). the issuance of the connection status is in respond to the hosts request using control code 0x04 in the complex command mode. HMS91C7432 to host 0x04 host use this control code to request the report for connection status. this code is to be used in simple command mode. host to HMS91C7432 0x05 host use this control code to request the report for smtp processing status. this code is to be used in simple command mode. host to HMS91C7432 0x06 for HMS91C7432 to issue the smtp processing status (refer to table 8 for the smtp status listing). the issuance of the smtp processing status is in respond to the hosts request using control code 0x05 in the complex command mode. HMS91C7432 to host 0x80 initiate modem C hosts command in simple command mode. instruct the HMS91C7432 to initialize the modem and send the pre-set at initializing string. this command must be issued after the at initializing string has been passed. host to HMS91C7432 0x81 terminate C hosts command in simple command mode. instruct the HMS91C7432 to terminate the current process. host to HMS91C7432 0x82 log in isp C hosts command in simple command mode. instruct the HMS91C7432 to login to the isp. when the command is accepted, HMS91C7432 will run the login process automatically and report to the host by using control code 0x02 complex command. the whole login process consists of the following steps, and connection status will be reported on each step. 1. modem off hook 2. dial up isp 3. modem handshake 4. logon and authentication check using ppp the login process ends when the authentication check is passed or in any cases a connection failure occurs. this command must be issued after the login information have been passed, otherwise, HMS91C7432 will issue request using control code 0x01 for missing info. host to HMS91C7432
hynix semiconductor 12 specifications of HMS91C7432 continue of table 3. listing of control code 0x83 quit isp C hosts command in simple command mode. instruct the HMS91C7432 to end the current isp session. when the command is accepted, HMS91C7432 will run the disconnect process automatically and report to the host by using control code 0x02 complex command. the whole disconnect process consists of the following steps, and connection status will be reported on each step. 1. quit the isp internet connection 2. disconnect the telephone line 3. hang up the modem and modem go on hook the quit process ends when the modem responds with on hook ok, or in any cases a connection failure occurs. host to HMS91C7432 0x84 login smtp server - hosts command in simple command mode. instruct the HMS91C7432 to login to the dedicated smtp server. upon the command is accepted, HMS91C7432 will run the following steps, and connection status will be reported on each step. 1. run dns protocol to resolve for the smtp servers ip address. 2. register to the smtp server. the login smtp process ends when the smtp server returns an ok response code, or in any cases a logon failure occurs. host to HMS91C7432 0x85 quit smtp server - hosts command in simple command mode. instruct the HMS91C7432 to end the current smtp session. upon the command is accepted, HMS91C7432 will quit the smtp server and keep on line (keep connection with the internet). quit smtp ok will be reported to the host by using control code 0x02 complex command. host to HMS91C7432 0x86 send mail request - hosts command in simple command mode. instruct the HMS91C7432 to get permission from the smtp server for sending mail. upon the command is accepted, HMS91C7432 will run the following steps, and connection status will be reported on each step. 1. send the send mail request to the smtp server 2. pass sender email address; recipient email address to the smtp server for validation. 3. wait for permission to send the mails body. when the smtp server accept all the mail info and an ok to send is received, HMS91C7432 will issue ready to send response using control code 0x02 to the host. do not send the mail body before this response is issued. host to HMS91C7432
hynix semiconductor 13 specifications of HMS91C7432 continue of table 3. listing of control code 0x87 login pop3 server - hosts command in simple command mode. instruct the HMS91C7432 to login to the dedicated pop3 server. upon the command is accepted, HMS91C7432 will run the following steps, and connection status will be reported on each step. 1. run dns protocol to resolve for the pop3 servers ip address. 2. register to the pop3 server and run the authentication check process 3. if authentication check is passed, request the pop3 server to return the number of mail contain in the mailbox. 4. if uidl option is set (refer to table 4 for explanation of uidl option), request the pop3 server to return the length and uid for each mail in the mailbox. the login pop3 process ends when the pop3 server returns the number of mail and or the uidl, or in any cases a logon failure occurs. upon receipt of the number of mail info and the uidl info, HMS91C7432 will pass these info to the host by using complex command mode with control code 0x00. the login pop3 command must be issued after the pop3 login information have been passed, otherwise, HMS91C7432 will issue request using control code 0x01 for missing info. host to HMS91C7432 0x88 quit pop3 server - hosts command in simple command mode. instruct the HMS91C7432 to end the current pop3 session. upon the command is accepted, HMS91C7432 will quit the pop3 server and keep on line (keep connection with the internet). quit pop3 ok will be reported to the host by using control code 0x02 complex command. host to HMS91C7432 0x89 shut down HMS91C7432 - hosts command in simple command mode. instruct the HMS91C7432 to enter the power down mode. make sure the smtp session or the pop3 session is terminated and the line is disconnected before the shut down command is issued. host to HMS91C7432
hynix semiconductor 14 specifications of HMS91C7432 table 4. listing of data id data id description command mode 0x00 baud rate for HMS91C7432 serial uart port setting. host command 0x01 modem at initialize string 0x02 modem result code listing 0x03 HMS91C7432 clock selection 0x04 pop3 uidl return option 0x05~0x20 reserved by the system. do not use. 0x21 telephone number for dialup network. 0x22 user id for the dialup network account 0x23 password for the dialup network account 0x24 ip address for the dns server (if not specified, dynamic dns server search will be used). 0x25 smtp port (if not specified, use default value port 25) 0x26 pop3 port (if not specified, use default value port 110) 0x27 smtp server domain name 0x28 pop3 server domain name 0x29 user id for pop3 account 0x2a password for pop3 account 0x2b senders email address 0x2c recipients email address 0x2d mail text body host command / HMS91C7432 data returns 0x2e reserved n.a 0x2f reserved n.a. 0x30 number of mail in pop3 server HMS91C7432 returns 0x31 uid listing HMS91C7432 returns 0x32 get mail (followed with the mail number) host command 0x33 delete mail from server (followed with the mail number) host command 0x34 get uid for a particular mail on the server (followed with the mail number) host command
hynix semiconductor 15 specifications of HMS91C7432 table 5. listing of info code for complex request mode made by HMS91C7432 data id description data_id.0 requesting recipients and senders email address data_id.1 requesting password for pop3 account data_id.2 requesting user id for pop3 account data_id.3 requesting domain name for pop3 server data_id.4 requesting domain name for smtp server data_id.5 requesting password for dialup network account data_id.6 requesting user id for dialup network account data_id.7 requesting telephone number for dialup account note on use: whenever the HMS91C7432 needs network connection info, and it is missing or corrupted in HMS91C7432 memory, HMS91C7432 will issue a request using complex command mode with control code 0x01 following with the above data id for necessary information return. each bit of the data id, if set, indicates the co-responding info is needed. table 6. listing of response code issued by HMS91C7432 in respond to the hosts command, the HMS91C7432 always return the following response code by using complex command mode with control code 0x02. the time taking to a response is variable and mostly depending on the physical connection and the network traffic. make sure a response code is received before issuing a new command. response code description related layer and protocol 0x40 modem is ready modem initialization 0x41 connected C modem is connected to the remote terminal modem dialup 0x42 modem not ready C modem is not presented or modem does not return a correct response modem initialization 0x43 no carrier C no carrier signal is detected. modem will hang up automatically. modem dialup 0x44 error C modem internal error or unknown modem error. modem dialup 0x45 no dial tone C no dial tone is detected. possibly the phone line is not connected. modem dialup 0x46 busy C line is busy. modem dialup 0x47 no answer C phone is no answer modem dialup 0x48 modem hang up C the modem is disconnected. modem dialup 0x49 internet logon ok C the internet account authentication is passed, logon success. ppp
hynix semiconductor 16 specifications of HMS91C7432 continue to table 6. listing of response code issued by HMS91C7432 0x4a isp no response C isp has no response after a long time out. ppp 0x4b authentication fail C invalid user id or invalid password ppp 0x4c logon fail C unable to logon to the internet for other reason ppp 0x4d internet quit ok C disconnect from the internet and go off line. ppp 0x4e reserved 0x4f reserved 0x50 mail sent ok C a mail is sent successfully smtp 0x51 smtp logon fail C fail to logon to the smtp server smtp 0x52 mail received ok C a mail is received successfully pop3 0x53 pop3 logon fail C fail to logon to the pop3 server pop3 0x54 pop3 authentication fail C invalid pop3 user id or invalid pop3 password pop3 0x55 transmission data error C data passed to the server is not accepted (e.g. un-resolvable email address) smtp 0x56 reception data error C invalid data is received. pop3 0x57 no new mail C pop3 mail box is empty pop3 0x58 smtp logon ok C successfully logon to the smtp server smtp 0x59 pop3 logon ok C successfully logon to the pop3 server pop3 0x5a dns fail C unable to locate dns server or dns server return invalid data dns 0x5b smtp quit C exit smtp server smtp 0x5c pop3 quit C exit pop3 server pop3 0x5d mail deleted C a mail is deleted from the pop3 mail box pop3 0x5e mail deleted fail C unable to delete the mail, either the mail number is not exist or the mail is locked by the server pop3 0x5f wrong mail number C the mail number not exist in the mailbox. pop3 0x60 smtp ready to send C HMS91C7432 is ready to accept next packet of the mail text body. smtp 0x61 smtp buffer overflow C HMS91C7432 outgoing buffer is full. last packet received is invalid. host must resend the previous packet. smtp 0x62 smtp buffer full C HMS91C7432 outgoing buffer is nearly full and can not accept more data. the last packet is accepted. smtp
hynix semiconductor 17 specifications of HMS91C7432 table 7. list of response code for network status upon receipt of a network status request issued by the host with control code 0x04, the HMS91C7432 respond the request by returning the following code using complex command mode with control code 0x03. response code mnemonics descriptions 0x00 wait network is on hold or in processing, waiting for the network to return instruction or data. 0x01 dialing HMS91C7432 is connecting the internet service. 0x02 logon isp in progress passing logon info and authentication check in progress 0x03 logon isp ok system is on line and the network is connected. 0x04 logon smtp in progress resolving smtp ip address and waiting for smtp server to respond. 0x05 logon smtp ok system has logon to the smtp server. ready to send mail (send the mail header for validation first). 0x06 mail header is accepted smtp server has validated the addresses 0x07 sending mail sending mail in progress 0x08 quitting smtp server quit command has been issued to the smtp server, waiting for response. 0x09 logon pop3 in progress resolving pop3 servers ip address and waiting for the result of the authentication check. 0x0a logon pop3 ok system has logon to the pop3 server. 0x0b getting uid waiting for return of unique id of a mail. 0x0c requesting mail mail request was sent, waiting for server to return mail. 0x0d retrieving mail mail reception in progress. 0x0e deleting mail delete mail request was sent, waiting for server to return result. 0x0f quitting pop3 server quit command has been issued to the pop3 server, waiting for response. 0x10 network disconnecting quit command has been issued to the isp, waiting for server to respond. 0x11 modem disconnecting hanging up the modem and waiting for the modem to respond.
hynix semiconductor 18 specifications of HMS91C7432 table 8. list of smtp status response HMS91C7432 return the following response code when the host makes a request by using simple command mode with control code 0x05. HMS91C7432 return the response by using complex command mode with control code 0x06. response code mnemonics description 0x60 smtp ready to send HMS91C7432 is ready to accept next packet of the mail text body. 0x61 smtp buffer overflow HMS91C7432 outgoing buffer is full. last packet received is invalid. host must resend the previous packet. 0x62 smtp buffer full HMS91C7432 outgoing buffer is nearly full and can not accept more data. the last packet is accepted. examples of inter-chip communication session: example 1. commands issued by the host using simple command mode sync 1 sync 2 control code length 0x7e 0xfe 0x80 ~ 0x89 0x00 the following command string instructs the HMS91C7432 to logon to the isp 0x7e 0xfe 0x82 0x00 example 2. command issued by the host that using complex command mode sync 1 sync 2 control length data id data flag reserved data 0 .... data 127 0x7e 0xfe 0x00 value 0 ~ 34h 0 or 1 na the following command string instructs the HMS91C7432 to retrieve a the mail #2 from the pop3 server. note that the mail number must be defined as an integer (2 bytes long). sync 1 sync 2 control length data id data flag reserved data 0 data 1 0x7e 0xfe 0x00 0x05 0x32 0x01 0x00 0x00 0x02 example 3. a packet of mail text body received from HMS91C7432 this packet is passed from the HMS91C7432 in complex data mode, data id 0x2d indicate that the packet contain portion of a mail body. data flag is 0 indicates that more packet will follow. length is 0x83 indicates that there are 131 bytes after the length field. the actual text data occupy 128 bytes only. use the same format to pass outgoing mail body to the HMS91C7432. sync 1 sync 2 control length data id data flag reserved data 0 data 1 .. data 127 0x7e 0xfe 0x00 0x83 0x2d 0 0 t e ascii x
hynix semiconductor 19 specifications of HMS91C7432 example 4. HMS91C7432 request for missing connection info when the HMS91C7432 is going to make a connection to the internet or to a mail server, it will check if all necessary info is available. the connection info may be erased due to memory overlaying. upon an internet session is ended, HMS91C7432 will clear its memory pool for another session. whenever connection info is needed, HMS91C7432 will issue a request to the host for such info. the request will be made using complex command mode with control code 0x01 followed by a data id as listed in table 5. sync 1 sync 2 control length data id 0x7e 0xfe 0x01 0x01 0x08 this example demostrates a request made by the HMS91C7432 for the pop3 servers domain name when it is going to logon to the pop3 server. example 5. HMS91C7432 returning result code to the host there are sets of result code coresponding to each command issued by the host to the HMS91C7432. the HMS91C7432 returns at least one result code to each command, to report the result of execution or the status of the connection. HMS91C7432 returns the result code by using complex command mode with control code 0x02 followed by the result code (in the data id field) as listed in table 6. sync 1 sync 2 control length data id 0x7e 0xfe 0x02 0x01 0x49 this example demonstrates a result code returned from HMS91C7432 to report that the authentication check is passed and the system is on line (logon to the isp is success). example 6. host requesting connection status and the HMS91C7432 returns user may make a request for the connection status at any time during the internet session. the host may make its request by using simple command mode with control code 0x04. the HMS91C7432 will return the connection status by complex command mode with control code 0x03 followed by the connection status code as listed in table 7. this example demonstrates how the host makes a connection status request and how the HMS91C7432 responds to this request. the host made the request after a successful logon to the pop3 server. the HMS91C7432 report that the system has logon to the pop3 server. host requesting command format: sync 1 sync 2 control length 0x7e 0xfe 0x04 0x00 HMS91C7432 return the connection status: sync 1 sync 2 control length data id 0x7e 0xfe 0x03 0x01 0x0a
hynix semiconductor 20 specifications of HMS91C7432 example 7. host requesting smtp connection status and the HMS91C7432 returns when sending out an email during smtp session, the host should know when can it pass the mail header and when can it pass the mail body to the HMS91C7432. usually, depending on the traffic of the network, it takes a longer time to be successfully logon to the smtp server. the host should frequently check the connection status to determine the time to pass the mail header or to determine when to terminate the logon process if a time out is up. the host may make such a report by using simple command mode with control code 0x05. the HMS91C7432 will return the smtp connection status by complex command mode with control code 0x06 followed with the smtp status code as listed in table 8. this example demonstrates how the host makes a smtp connection status request and how the HMS91C7432 responds to this request. the host made the request after a successful logon to the smtp server. the HMS91C7432 report that it is ready to accept the mail body. if the request is made during the mail sending session, the following connection status indicates the HMS91C7432 is ready to accept more packets (outgoing buffer is not full). host requesting command format: sync 1 sync 2 control length 0x7e 0xfe 0x05 0x00 HMS91C7432 return the connection status: sync 1 sync 2 control length data id 0x7e 0xfe 0x06 0x01 0x60
hynix semiconductor 21 specifications of HMS91C7432 plastic package p-dip-20 (plastic dual in package) unit : inch * 1.043 1.010 * 1.043 1.010 0.180max 0.100 pitch 0.140 0.120 0.021 0.015 **0.270 0.245 0.065 0.050 0.015min 0.014 0.008 0 ~ 15 0.300bsc. **0.270 0.245 - note - 1. dimension * mark does not include mold protrusion maximum allowable protrusion is 0.010 inch per side. 2. dimension ** mark does not include mold
hynix semiconductor 22 specifications of HMS91C7432 plastic package p-sop-20 (plastic small outline package) unit : inch 0.419 0.398 * 0.5118 0.4961 0.020 0.013 0.050 pitch 0.104 0.093 0.0118 0.004 * 0.5118 0.4961 0.0125 0.0091 0.042 0.016 **0.299 0.291 * *0.299 0.291 - note - 1. dimension * mark does not include mold protrusion maximum allowable protrusion is 0.006 inch per side. 2. dimension ** mark does not include mold protrusion maximum allowable protrusion is 0.010 inch per side. 3. dimensioning and tolerancing per ansi y14.5m-1982
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