INDEX

TODO

SEAGATE

See UnLock

TTL

Male @db9 :

   (1) CD  -- 4 6 @db9
(6)    DSR -- 1 4 @db9
   (2) RxD --------------- 7 @ Max232         RXD=10@Max232 -- 4@hdd = /RXD
(7)    RST -- 8 @db9
   (3) TxD --------------- 8 @ Max232         TXD=9@Max232  -- 3@hdd = /TXD 
(8)    CTS -- 7 @db9
   (4) DTR -- 1 6 @db9                                -
[9]    ? open                                                                
   (5) GnD -------------- 15 @ Max232  +--- hdd1+hdd5+hdd7+hdd2                            
 
                                                   
                                                      @hdd8+16@max232                 hdd6=open
                                                      |
                  HDD                   \ +12v       +5v  /     | (2) (4) [6] (8) |   | IDE       _            |
                                         \  () () () ()  /      | (1) (3) (5) (7) |   |__________| |___________|

MAX323

UnSure MAX323 input voltage is 5V but 3.3V :

ToDo: VerifY those statements :

"The MAX3232 has the same pin layout as the MAX232, and works at 3.3V." : 
When MAX232 is connected to 5v supply then 
VIL Low-level input voltage (T1IN, T2IN) 0.8v
VIH High-level input voltage (T1IN,T2IN) 2v

* http://www.edaboard.com/thread264242.html

LvTtl = 3.3V

RPI

http://forum.buffalo.nas-central.org/viewtopic.php?f=50&t=5871&start=45

/boot/cmdline.txt
#console=ttyAMA0,115200 kgdboc=ttyAMA0,115200
/etc/inittab
#T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100

MISC

MORE

ttl.txt · Last modified: 2020/09/08 20:50 (external edit)
 
Except where otherwise noted, content on this wiki is licensed under the following license: CC Attribution-Share Alike 3.0 Unported
Recent changes RSS feed Donate Powered by PHP Valid XHTML 1.0 Valid CSS Driven by DokuWiki