Date: Fri, 12 Jul 2002 13:30:05 +0000 From: "neil barnes" <[EMAIL PROTECTED]> Subject: Re: [LIB] L50 & USB?
>Date: Fri, 12 Jul 2002 06:53:16 -0500 >From: John Musielewicz <[EMAIL PROTECTED]> >Subject: Re: [LIB] L50 & USB? > >On Fri, 12 Jul 2002 04:23:12 -0700, you wrote: > > >Date: Fri, 12 Jul 2002 11:15:36 +0000 > >From: "neil barnes" <[EMAIL PROTECTED]> > >Subject: Re: [LIB] L50 & USB? > >>sdk. Don't see why it wouldn't work for 16 to 32 bit. > >> > > > >Cos the pins aren't in the same places; cos the controller chip can't do >it, > >and cos the cards expect to use a 32-bit wide data bus. Bugger! > > > >Neil > >How do you know what the controller chip will do? Do you have specs on >it? Difficult to add another 16 data pins and keep the same number >(68) of total pins. So what do you think they got rid of? Some address >pins? power supply? Ground?:) I wouldn't be surprized if cardbuss >isn't already software doubling the pins to get what they need >already. Remember they do need to keep backwards compatibilty plus >hardware is expensive. >From the www.pcmcia.org site - card pin specifications: +================================================================+ | Pin Assignments For The PC Card And Cardbus Interfaces | +---+-----------------+---------+-----+-----------------+--------+ | | 16-Bit | 32-bit |$| | 16-Bit | 32-bit | | +-----------------+ |$| +--------+--------+ + |Pin| Memory |I/O+Mem |CardBus |$| Pin| Memory |I/O+Mem |CardBus | +===+========+========+========+$+====+========+========+========+ |1 |GND |GND |GND |$| 35 |GND |GND |GND | |2 |D3 |D3 |CAD0 |$| 36 |CD1# |CD1# |CCD1# | |3 |D4 |D4 |CAD1 |$| 37 |D11 |D11 |CAD2 | |4 |D5 |D5 |CAD3 |$| 38 |D12 |D12 |CAD4 | |5 |D6 |D6 |CAD5 |$| 39 |D13 |D13 |CAD6 | +---+--------+--------+------- |$| ---+--------+--------+--------+ |6 |D7 |D7 |CAD7 |$| 40 |D14 |D14 |RSRVD | |7 |CE1# |CE1# |CCBE0# |$| 41 |D15 |D15 |CAD8 | |8 |A10 |A10 |CAD9 |$| 42 |CE2# |CE2# |CAD10 | |9 |OE# |OE# |CAD11 |$| 43 |VS1# |VS1# |CVS1 | |10 |A11 |A11 |CAD12 |$| 44 |RSRVD |IORD# |CAD13 | +---+--------+--------+------- |$| ---+--------+--------+--------+ |11 |A9 |A9 |CAD14 |$| 45 |RSRVD |IOWR# |CAD15 | |12 |A8 |A8 |CCBE1# |$| 46 |A17 |A17 |CAD16 | |13 |A13 |A13 |CPAR |$| 47 |A18 |A18 |RSRVD | |14 |A14 |A14 |CPERR# |$| 48 |A19 |A19 |CBLOCK# | |15 |WE# |WE# |CGNT# |$| 49 |A20 |A20 |CSTOP# | +---+--------+--------+------- |$| ---+--------+--------+--------+ |16 |READY |IREQ# |CINT# |$| 50 |A21 |A21 |CDEVSEL#| |17 |Vcc |Vcc |Vcc |$| 51 |Vcc |Vcc |Vcc | |18 |Vpp1 |Vpp1 |Vpp1 |$| 52 |Vpp2 |Vpp2 |Vpp2 | |19 |A16 |A16 |CCLK |$| 53 |A22 |A22 |CTRDY# | |20 |A15 |A15 |CIRDY# |$| 54 |A23 |A23 |CFRAME# | +---+--------+--------+------- |$| ---+--------+--------+--------+ |21 |A12 |A12 |CCBE2# |$| 55 |A24 |A24 |CAD17 | |22 |A7 |A7 |CAD18 |$| 56 A25 |A25 |CAD19 | |23 |A6 |A6 |CAD20 |$| 57 |VS2# |VS2# |CVS2 | |24 |A5 |A5 |CAD21 |$| 58 |RESET |RESET |CRST# | |25 |A4 |A4 |CAD22 |$| 59 |WAIT# |WAIT# |CSERR# | +---+--------+--------+------- |$| ---+--------+--------+--------+ |26 |A3 |A3 |CAD23 |$| 60 |RSRVD |INPACK# |CREQ# | |27 |A2 |A2 |CAD24 |$| 61 |REG# |REG# |CCBE3# | |28 |A1 |A1 |CAD25 |$| 62 |BVD2 |SPKR# |CAUDIO | |29 |A0 |A0 |CAD26 |$| 63 |BVD1 |STSCHG# |CSTSCHG | |30 |D0 |D0 |CAD27 |$| 64 |D8 |D8 |CAD28 | +---+--------+--------+------- |$| ---+--------+--------+--------+ |31 |D1 |D1 |CAD29 |$| 65 |D9 |D9 |CAD30 | |32 |D2 |D2 |RSRVD |$| 66 |D10 |D10 |CAD31 | |33 |WP |IOIS16# |CCLKRUN#|$| 67 |CD2# |CD2# |CCD2# | |34 |GND |GND |GND |$| 68 |GND |GND |GND | +===+========+========+========+=+====+========+========+========+ As you can see, *everything* is in a different place, apart from the power and a couple of control pins. It looks like the cardbus spec multiplexes the data and address buses - that would tie in with PCI bus, IIRC. As to knowing what the controller chip will do - that's plain logic: why would the manufacturers build in a capability for a system that didn't exist when it was designed, and if they did, why didn't Tosh put a cardbus type slot in? Of course, the big giveaway is the bit in the spec sheet (http://www.abcsinc.com/small-linux/notes.htm) that says '8 and 16 bit card interface' <grin> Cheers, Neil _________________________________________________________________ Join the world�s largest e-mail service with MSN Hotmail. http://www.hotmail.com ************************************************************** http://libretto.basiclink.com - Libretto mailing list http://www.silverace.com/libretto/ - Archives -------TO UNSUBSCRIBE------- Reply to any of the list messages. The reply mail should be addressed to: [EMAIL PROTECTED] - Then replace any text on the message's subject line: cmd:unsubscribe --------TO UNSUBSCRIBE DIGEST------ Do above but with this on subject line: cmd:unsubscribe digest **************************************************************
