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參數(shù)資料
| 型號： | L7250 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 運動控制電子 |
| 英文描述： | VOICE COIL MOTOR CONTROLLER, PQFP64 |
| 封裝： | TQFP-64 |
| 文件頁數(shù)： | 11/46頁 |
| 文件大?。?/td> | 478K |
| 代理商： | L7250 |
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19/46
L7250
[7:5]
Spslew[2:0]
000 = 10 V/us
001 = 20 V/us
010 = 30 V/us
011 = 40 V/us
100 = 50 V/us
101 = 60 V/us
110 = 70 V/us
111 = 80 V/us
REGISTER CTR3, ADDRESS: 05H
[0]
Sken
0 = shock sensor output no latched
1 = shock sensor output latched (to clear the latched information
a transition 1 -> 0 -> 1 is necessary)
[1]
Vnegen
0 = negative regulator disabled
1 = negative regulator enabled
[2]
TSDen
0 = thermal shutdown disabled
1 = thermal shutdown enabled
[6:3]
M[3:0]
masking while sensing ZC, expressed in terms of half samples
after window opening
In terms of electrical degrees the single mask step is 3.75.
[7]
SPIprot
0 = default protocol
1 = inverted SCLK protocol
REGISTER CTR4, ADDRESS: 06H
[0]
PREsmo
0 = spindle clock is system clock divided by two (FFWDADC clock
is system clock divided by 8)
1 = spindle clock is system clock (FFWDADC clock is system
clock divided by 4)
[2:1]
PREADC[1:0]
00 = sleep mode
01 = ADC clock is system clock divide by 4
10 = ADC clock is system clock divide by 2
11 = ADC clock is system clock
[7:3]
W[4:0]
Windowing while sensing ZC, expressed in terms of half samples
before TO value
In terms of electrical degrees the single window step is 3.75.
REGISTER CTR5, ADDRESS: 07H
[4:0]
TO[4:0]
Coarse and fine section of phase shift, applied for torque
optimization.
In terms of electrical degrees the Torque Optimizer single step is
0.937 electrical degrees.
[5]
FFWEn
0 = power supply compensation for spindle disabled
1 = power supply compensation for spindle enabled
[6]
Advance
0->1 increments by one the current sample position
[7]
LoadCP
0->1 enables load of TO value as the current sample position
REGISTER KVR, ADDRESS: 08H
[7:0]
Kv[7:0]
KVAL factor for speed loop control
Table 2. Register map content description (continued)
Bit
SPI field name
Content
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