參數(shù)資料
型號: L7250
廠商: 意法半導體
英文描述: 5V & 12V SPINDLE AND VCM MOTORS DRIVER
中文描述: 5V的
文件頁數(shù): 18/46頁
文件大?。?/td> 478K
代理商: L7250
L7250
18/46
[5:4]
RLToffBrake[1:0]
Selects the duration of Toff (Ton) active brake phase:
00 = 300usec
01 = 400usec
10 = 500usec
11 = 600usec
[7]
SkockConf
Selects the Shock Sensor application
0 = piezo element
1 = charging element
[6]
SkockTh[0]
Selects the Shock Sensor threshold
0 = Vref +/- 200mV
1 = Vref +/- 500mV
REGISTER CTR1, ADDRESS: 03H
[3:0]
Spstate[3:0]
0000 = CLCOAST
0001 = OLCOAST
0010 = OLSIX
0011 = OLSIN
0100 = OLBRAKE
0101 = INDSENSE
0110 = CLSIX
0111 = CLSIN
1000 = CLBRAKE
[6:4]
VCMstate[2:0]
Possible states for the VCM:
000 = Unload/Retract
001 = tri-state
010 = brake
011 = enable current mode
100 = enable voltage mode
101 = offset calibration
110 = confirm the previous state
111 = confirm the previous state
[7]
BemfOffCal
VCM BEMF processor offset calibration
REGISTER CTR2, ADDRESS: 04H
[1:0]
PWMmask[1:0]
Selects the length of the mask over PWM rising edge:
00 = 2 us
01 = 4 us
10 = 6 us
11 = 8 us
[4:2]
Currdac[2:0]
Selects the voltage threshold for the spindle current limiter:
000 = 250mV
001 = 300mV
010 = 350mV
011 = 400mV
100 = 450mV
101 = 500mV
110 = 550mV
111 = 600mV
Table 2. Register map content description
(continued)
Bit
SPI field name
Content
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