an8725fh Panasonic Corporation of North America, an8725fh Datasheet - Page 3

• Manufacturer Part Number: an8725fh
• Description: Semiconductor Laser Power Control Ic
• Manufacturer: Panasonic Corporation of North America

ICs for Optical Disk Drive
Note) Description on notations of "Category" in the following list:
Pin No.
Pin Descriptions
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
IN
IND : Input pin (pull-down with 100 k )
INU : Input pin (pull-up with 100 k )
OUT: Output pin
A: Analog function
: Input pin
RPHOLD
Symbol
DGND
DGND
PKMD
DGND
DGND
SGND
BIMD
XWR
DV
XRD
AD0
AD1
AD2
AD3
DT0
DT1
DT2
DT3
CC
IND
IND
IND
INU
INU
IND
IND
IND
IND
I/O
I/O
I/O
I/O
PS
PS
PS
PS
PS
PS
Category
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
Pin connected to the chip substrate.
Must be used in the same potential as other GND pins.
GND pin exclusive for a logic circuit.
Must be used in the same potential as other GND pins.
Peak current modulation signal input pin.
In high-level, the current set up with DAC2 is superimposed on LD.
In high-level, the current set up with DAC3 is superimposed on LD.
Record gate signal input pin.
Inputs a low-level in playback and a high-level in recording.
Switches an amp. of light monitoring signal, abnormally emitted light
detection level and on/off of HF module.
Register writing signal pin.
Selects a register specified by address in a fall edge and writes a bus data
on the register of the address specified in the rise edge.
Register read-out signal pin.
Register data of the address specified in low appears on the bus.
Power supply pin exclusive for a logic circuit.
Must be used in the same potential as other power supply pins.
GND pin exclusive for a logic circuit.
Must be used in the same potential as other GND pins.
4-bit address pin for registers.
Selects the register to be accessed.
Data I/O 8-bit bus pin.
The bus to set the data to be written on a register and to read out the data
of a register.
GND pin exclusive for a logic circuit.
Must be used in the same potential as other GND pins.
Bias current modulation signal input pin.
I/O : Input/output pin (pull-down with 100 k )
PS
MSC : Parts connecting pin, etc.
D: Digital function
: Power supply/GND pin
Description
AN8725FH
3