About NXP TDA8007 (smart-card chip controller)
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From: alessandro.strazzero on 14 Jun 2007 13:57 Dear everybody, I'm having a trouble writing a software driver for the NXP TDA8007. My software is able to read and write any of chip's registers. What I don't understand refers to bit CRED (MSR register) behaviour. First instruction of my driver is a write operation on CSR register. After this operation CRED clears and never sets ! The datasheet tells bit CRED clears after a fast read on URR register or after a fast write on UTR or TOC registers. In my case CRED clears after a simple write to CSR register. Then, I expect CRED sets up after the guard time in order the CPU can access to URR/UTR/TOC registers. But it never sets up ! Did anybody experience my problem ? Could you suggest a sample software driver or any application note for TDA8007 where I can find the answers to my questions ? Best regards /Alessandro
From: CBFalconer on 14 Jun 2007 16:35 alessandro.strazzero(a)gmail.com wrote: > > I'm having a trouble writing a software driver for the NXP TDA8007. > My software is able to read and write any of chip's registers. What > I don't understand refers to bit CRED (MSR register) behaviour. > First instruction of my driver is a write operation on CSR register. > > After this operation CRED clears and never sets ! The datasheet > tells bit CRED clears after a fast read on URR register or after a > fast write on UTR or TOC registers. In my case CRED clears after a > simple write to CSR register. Then, I expect CRED sets up after the > guard time in order the CPU can access to URR/UTR/TOC registers. > But it never sets up ! > > Did anybody experience my problem ? Could you suggest a sample > software driver or any application note for TDA8007 where I can > find the answers to my questions ? Please limit your line length. Under 72 chars is good, 67 is better. I fixed this one. -- <http://www.cs.auckland.ac.nz/~pgut001/pubs/vista_cost.txt> <http://www.securityfocus.com/columnists/423> <http://www.aaxnet.com/editor/edit043.html> <http://kadaitcha.cx/vista/dogsbreakfast/index.html> cbfalconer at maineline dot net -- Posted via a free Usenet account from http://www.teranews.com
From: CBFalconer on 14 Jun 2007 17:42 alessandro.strazzero(a)gmail.com wrote: > > I'm having a trouble writing a software driver for the NXP TDA8007. > My software is able to read and write any of chip's registers. What > I don't understand refers to bit CRED (MSR register) behaviour. > First instruction of my driver is a write operation on CSR register. > > After this operation CRED clears and never sets ! The datasheet > tells bit CRED clears after a fast read on URR register or after a > fast write on UTR or TOC registers. In my case CRED clears after a > simple write to CSR register. Then, I expect CRED sets up after the > guard time in order the CPU can access to URR/UTR/TOC registers. > But it never sets up ! > > Did anybody experience my problem ? Could you suggest a sample > software driver or any application note for TDA8007 where I can > find the answers to my questions ? Please limit your line length. Under 72 chars is good, 67 is better. I fixed this one. -- <http://www.cs.auckland.ac.nz/~pgut001/pubs/vista_cost.txt> <http://www.securityfocus.com/columnists/423> <http://www.aaxnet.com/editor/edit043.html> <http://kadaitcha.cx/vista/dogsbreakfast/index.html> cbfalconer at maineline dot net -- Posted via a free Usenet account from http://www.teranews.com
From: Jim Stewart on 14 Jun 2007 18:34 CBFalconer wrote: > alessandro.strazzero(a)gmail.com wrote: >> I'm having a trouble writing a software driver for the NXP TDA8007. >> My software is able to read and write any of chip's registers. What >> I don't understand refers to bit CRED (MSR register) behaviour. >> First instruction of my driver is a write operation on CSR register. >> >> After this operation CRED clears and never sets ! The datasheet >> tells bit CRED clears after a fast read on URR register or after a >> fast write on UTR or TOC registers. In my case CRED clears after a >> simple write to CSR register. Then, I expect CRED sets up after the >> guard time in order the CPU can access to URR/UTR/TOC registers. >> But it never sets up ! >> >> Did anybody experience my problem ? Could you suggest a sample >> software driver or any application note for TDA8007 where I can >> find the answers to my questions ? > > Please limit your line length. Under 72 chars is good, 67 is > better. I fixed this one. Is there a way to get the Mozzila client to do that automagically?
From: CBFalconer on 14 Jun 2007 21:44
Jim Stewart wrote: > CBFalconer wrote: > .... snip ... >> >> Please limit your line length. Under 72 chars is good, 67 is >> better. I fixed this one. > > Is there a way to get the Mozzila client to do that automagically? In Netscape 4.75 it is: preferences/mail & newsgroups/messages/message wrapping. I expect it is somewhat similar in Thunderbird. -- <http://www.cs.auckland.ac.nz/~pgut001/pubs/vista_cost.txt> <http://www.securityfocus.com/columnists/423> <http://www.aaxnet.com/editor/edit043.html> cbfalconer at maineline dot net -- Posted via a free Usenet account from http://www.teranews.com |