Register Initialization; Diagnostic And Reset Considerations - IBM DTTA-351010 - Deskstar 10.1 GB Hard Drive Specifications

(*4) In the case of Sleep mode, the device goes to Standby mode. In other case, the device does not
change current mode.

10.1.1 Register Initialization

Figure 63. Default Register Values
After power on, hard reset, or software reset, the register values are initialized as shown in Figure 63.
Figure 64. Diagnostic Codes
The meaning of the Error Register diagnostic codes resulting from power on, hard reset or the Execute
Device Diagnostic command are shown in Figure 64.

10.2 Diagnostic and Reset considerations

For each Reset and Execute Device Diagnostic, the diagnostic is done as follows:
Power On Reset
DASP- is read by Device 0 to determine if Device 1 is present. If Device 1 is present
Device 0 shall read PDIAG- to determine when it is valid to clear the BSY bit and
whether Device 1 has powered on or reset without error, otherwise Device 0 clears
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O E M Specifications for DTTA-3xxxxx
R e g i s t e r
E r r o r
S e c t o r C o u n t
S e c t o r N u m b e r
C y l i n d e r L o w
C y l i n d e r H i g h
D e v i c e / H e a d
S t a t u s
A l t e r n a t e S t a t u s
C o d e
0 1 h N o e r r o r d e t e c t e d
0 2 h F o r m a t t e r d e v i c e e r r o r
0 3 h S e c t o r b u f f e r e r r o r
0 4 h E C C c i r c u i t r y e r r o r
0 5 h C o n t r o l l e r m i c r o p r o c e s s o r e r r o r
8 x h D e v i c e 1 f a i l e d
D e f a u l t V a l u e
D i a g n o s t i c C o d e
0 1 h
0 1 h
0 0 h
0 0 h
A 0 h
5 0 h
5 0 h
D e s c r i p t i o n