參數(shù)資料
型號(hào)： AN8725FH
廠商： PANASONIC CORP
元件分類： 其它接口
英文描述： Semiconductor laser power control IC
中文描述： SPECIALTY INTERFACE CIRCUIT, PQFP80
封裝： 12 X 12 MM, PLASTIC, QFP-80
文件頁(yè)數(shù)： 3/36頁(yè)
文件大小： 197K
代理商： AN8725FH
ICs for Optical Disk Drive
AN8725FH
3
I
Pin Descriptions
Note) Description on notations of "Category" in the following list:
IN
: Input pin
IND : Input pin (pull-down with 100 k
)
INU : Input pin (pull-up with 100 k
)
OUT: Output pin
I/O
PS
MSC: Parts connecting pin, etc.
: Input/output pin (pull-down with 100 k
)
: Power supply/GND pin
A: Analog function
D: Digital function
Pin No.
Symbol
Category
Description
1
SGND
PS
D
Pin connected to the chip substrate.
Must be used in the same potential as other GND pins.
2
DGND
PS
D
GND pin exclusive for a logic circuit.
3
DGND
PS
D
Must be used in the same potential as other GND pins.
4
PKMD
IND
D
Peak current modulation signal input pin.
In high-level, the current set up with DAC2 is superimposed on LD.
5
BIMD
IND
D
Bias current modulation signal input pin.
In high-level, the current set up with DAC3 is superimposed on LD.
6
RPHOLD
IND
D
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.
7
XWR
INU
D
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.
8
XRD
INU
D
Register read-out signal pin.
Register data of the address specified in low appears on the bus.
9
DV
CC
PS
D
Power supply pin exclusive for a logic circuit.
Must be used in the same potential as other power supply pins.
10
DGND
PS
D
GND pin exclusive for a logic circuit.
Must be used in the same potential as other GND pins.
11
AD0
IND
D
4-bit address pin for registers.
12
AD1
IND
D
Selects the register to be accessed.
13
AD2
IND
D
14
AD3
IND
D
15
DT0
I/O
D
Data I/O 8-bit bus pin.
16
DT1
I/O
D
The bus to set the data to be written on a register and to read out the data
17
DT2
I/O
D
of a register.
18
DT3
I/O
D
19
DGND
PS
D
GND pin exclusive for a logic circuit.
Must be used in the same potential as other GND pins.
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