Contents
4.6.3 Read circuit ........................................................................................... 4-11
4.6.4 Digital PLL circuit ................................................................................ 4-12
4.7 Servo Control ................................................................................................... 4-13
4.7.1 Servo control circuit .............................................................................. 4-13
4.7.2 Data-surface servo format ..................................................................... 4-15
4.7.3 Servo frame format................................................................................ 4-17
4.7.4 Actuator motor control .......................................................................... 4-18
4.7.5 Spindle motor control............................................................................ 4-19
CHAPTER 5
Interface..................................................................................... 5-1
5.1 Physical Interface .............................................................................................. 5-2
5.1.1
Interface signals .................................................................................... 5-2
5.1.2
Signal interface regulation .................................................................... 5-4
5.1.2.1
Out of band signaling ................................................................. 5-4
5.1.2.2
Primitives descriptions ............................................................... 5-5
5.1.3
Electrical specifications ........................................................................ 5-7
5.1.4
Connector pinouts ............................................................................... 5-10
5.1.5
P11 function ........................................................................................ 5-11
5.1.5.1
Staggered Spin-up .................................................................... 5-11
5.1.5.2
Driving Activity LED .............................................................. 5-11
5.1.6
Hot Plug .............................................................................................. 5-13
5.2 Logical Interface ............................................................................................. 5-14
5.2.1
Communication layers ........................................................................ 5-15
5.2.2
Outline of the Shadow Block Register................................................ 5-16
5.2.3
Outline of the frame information structure (FIS)................................ 5-17
5.2.3.1
FIS types .................................................................................. 5-17
5.2.3.2
Register - Host to Device ......................................................... 5-17
5.2.3.3
Register - Device to Host ......................................................... 5-18
5.2.3.4
DMA Active - Device to Host.................................................. 5-18
5.2.3.5
DMA Setup - Device to Host or Host to Device
(Bidirectional) .......................................................................... 5-19
5.2.3.6
BIST Active - Bidirectional ..................................................... 5-20
5.2.3.7
Data - Host to Device or Device to Host (Bidirectional) ......... 5-21
5.2.3.8
PIO Setup – Device to Host ..................................................... 5-21
C141-E254
xi
Summary of Contents for MHX2250BT
Page 1: ...C141 E254 01EN MHX2300BT MHX2250BT DISK DRIVES PRODUCT MANUAL ...
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Page 59: ...4 3 Circuit Configuration PCA Figure 4 2 Circuit configuration C141 E254 4 5 ...
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Page 86: ...Interface Figure 5 2 Example of the circuit for driving Activity LED 5 12 C141 E254 ...
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