HA13568AT Hitachi Semiconductor, HA13568AT Datasheet - Page 4

• Manufacturer Part Number: HA13568AT
• Description: CD-ROM Combo Driver
• Manufacturer: Hitachi Semiconductor

HA13568AT
Pin Description (cont)
Pin No.
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
1, 28, 29, 56, TAB
4
Pin Name
PHASE
BRKSEL
VREGS
VREGF
CE
CT1
CT3
VSS
CT2
RT
SLDLIM
SLDIN
TRYF
TRYR
TRYLIM
NC
NC
NC
TRRIN
TRRREF
Function
Outputs the B-EMF zero cross phase. Open corrector. (See the timing chart)
To select the brake mode. Lo: Short brake, Hi: Reverse full brake
(when forward torque input: BRKSEL = H)
Voltage regulator sense pin (VREGS
Voltage regulator force pin
Chip enable. Input Hi: active
Time constant for clock oscillator circuit. The clock oscillator frequency is
determined by the external capacitor and resistor Ct1 and Rt.
Time constant for PWM carrier oscillator. The carrier frequency is determined by
the external capacitor and resistor Ct3 and Rt.
Control block power supply. 5 V
Time constant for start-up oscillator. The start-up oscillator frequency is
determined by the external capacitor and resistor Ct2 and Rt.
Reference voltage (3.3 V). The IC’s internal reference current is determined by
this voltage and the external resistor Rt.
SLD output maximum duty setting
SLD control input pin
TRY driver forward input
TRY driver reverese input
TRY output voltage setting pin
No connection
TRR control input pin
TRR driver block reference voltage
GND
3.3 V output)