AN8746SA Datasheet, PDF (5/5 Pages) Panasonic Semiconductor – PWM driver IC for portable CD player

ICs for Compact Disc/CD-ROM Player
AN8746SA
s Application Notes
2. Logic table of driver
V_C
PC
H
H
Fil to Fi4
L
Ril to Ri4
L
Fol to Fo3
L
Rol to Ro3
L
Fo4 Ro4
L
L
H
H
L
H
L
H
L
H
H
H
H
L
H
L
L
L
H
H
H
H
L
L
H
L
H
L
X
X
L
L
L
L
L
X
X
X
Hi-Z
Hi-Z
Hi-Z Hi-Z
Note) AC = H on the above logic table. H stands for V_C power supply potential, L for GND potential (0 V) and X for H or L.
Hi-Z indicates that the driver output pin becomes a high impedance state.
Logic input pin must not be left open. And do not apply any other voltages than H or L.
s Application Circuit Example
DSP ⇔
Micro-
computer ⇔
M
M
V_GI = 7 V
Logic circuit
Reset
Pre-
TSD
driver
H
bridge
VBG
Pre-
driver
V_M1
monitor ^{Logic circuit}
H
bridge
H
bridge
Logic circuit
Pre-
driver
V_G
limiter
H
bridge
Pre-
driver
Logic circuit
DSP ⇔
V_C = 2.4 V/0 V
V_M = 2.4 V
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