26 Jun
2012
26 Jun
'12
2:02 p.m.
On 26 jun. 2012, at 22:42, Richard <legalize at xmission.com> wrote:
In article <4FE9ED6C.6030001 at bitsavers.org>,
Al Kossow <aek at bitsavers.org> writes:
I'd like to know as well. Started searching for this but didn't find the '86
version, only newer at National's website.
re,
Sander
Read write are differential TTL levels, MFM or RLL encoded. Clock recovery
on read generally uses a PLL.
National app note
AN-0413_Disk_Interface_Design_Guide_and_Users_Manual_Jan86
gives a decent overview of the different drive interfaces circa 1986.
AN-0414_Precautions_for_Disk_Data_Separator_PLL_Designs_Feb86
AN-0581_Application_Issues_for_the_DP8465_Family_of_Data_Synchronizers_Jan89
AN-0494_Designing_with_the_DP8462.pdf
AN-0500_Designing_an_ESDI_Disk_Controller_Subsystem_with_Nationals_DP8466A_No
v87.pdf
AN-0415_Designing_with_the_DP8461_Apr85.pdf
AN-0501_Interfacing_Nationals_DP8466A_to_the_SMD_Interface_Standard_Mar87.pdf
are also of interest
Are these app notes online? Every time I search for data sheets
online, I just get lost in a rathole of spamhauses.