AK7719 Datasheet, PDF (6/16 Pages) Asahi Kasei Microsystems – Low Power DSP for Voice and Audio Processing

■ Handling of Unused Pins
Unused I/O pins must be connected appropriately:
Pin Name
STO/RDY, SDOUT3/GPO, SDOUT4/GP1
SYNC1, BCLK1, SDIN1, SDIN2, SDIN3, SDIN4,
SYNC3/JX1, BCLK3/JX0, TEST
Setting
Leave Open
Connect to VSS.
■ Pin States in Power-down Mode
The table below shows pin states when the PDN pin= “L”.
NO Pin Name I/O
Pin state
D3 ^STO
RDY
Low
O
C5 SDOUT1 O SDIN2 data output
E4 SYNC2
O SYNC1 data output
E3 BCLK2
O BCLK1 data output
E1 SDOUT2 O SDIN1 data output
D4 ^SDOUT3
GP0
O ^{SDIN4 data output}
D2 ^SDOUT4
GP1
O ^{SDIN3 data output}
D1 ^SO
SDA
O Low level (I2C pin = “L”: SPI)
I/O Hi-z (I2C pin = “H” :I²C)
[AK7719]
ABSOLUTE MAXIMUM RATINGS
(VSS=0V; All voltages are with respect to ground.)
Parameter
Symbol
min
Power Supply Voltage (DSP Core)
VDD
−0.3
Power Supply Voltage (Digital I/O)
TVDD
−0.3
Input Current (except for power supply pins)
IIN
-
Input Voltage
VIND
−0.3
Operating Ambient Temperature
Ta
−20
Storage Temperature
Tstg
−65
max
Unit
1.6
V
4.1
V
±10
mA
TVDD+0.3
V
85
°C
150
°C
WARNING: Operation at or beyond these limits may result in permanent damage to the device.
Normal operation is not guaranteed at these extremes.
RECOMMENDED OPERATION CONDITION
(VSS=0V; All voltages are with respect to ground.)
Parameter
Symbol
min
typ
max
Unit
Supply Voltage Range (DSP core)
VDD
1.1
1.2
1.3
V
Supply Voltage Range (I/Os)
TVDD
1.6
1.8
3.6
V
Note 3. The power-up sequence with VDD and TVDD is not critical. The PDN pin should be held “L” when power is
supplied. The PDN pin is allowed to be “H” after all power supplies are applied and settled.
Note 4. The external pull-up resistors at the SDA and SCL pins should be connected to TVDD voltage or less.
WARNING: AKM assumes no responsibility for the usage beyond the conditions in the datasheet.
MS1351-E-00-PB
6
2012/01