HA13614FH Datasheet, PDF (6/26 Pages) Hitachi Semiconductor – Combo (Spindle & VCM) Driver

HA13614FH
Serial Port
Construction
SEENAB
SCLK
DATA
Serial ^{D0 to D15}
port
to each block
RESET *
Note: When POR = Low, internal RESET signal becomes High and when RESET = High,
all bit of serial port are set up default value as shown in table 2.
Figure 1 Construction of Serial Port
Table 1 Truth Table of Internal RESET Signal
Input
Output
Note
POR
RESET
Low
High
1
Open
Note:
Low
1
1. When +5 V or +3.3 V power supply goes to Low, then POR = Low.
POR output is able to construct the wired logic with external signal.
Input Data
MSB
LSB
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
Figure 2 Input Data
The serial port is required the 16 bits data (D0 to D15). When the data length is less than 16 bits, the
internal register will not be up dated. And when the data length is more than 16 bits, this register will take
later 16 bits and ignore the faster bit.
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