AK7738VQ Datasheet, PDF (12/42 Pages) Asahi Kasei Microsystems – Multi DSP with 5ch ADC + 4ch DAC + 8ch SRC

[AK7738]
■ Handling of Unused Pins
Unused I/O pins must be connected appropriately.
Classification Pin Name
Setting
Analog
MPREF, MPWR1, MPWR2, AIN1L/INP1, INN1, AIN1R/INP2, INN2, Open
AIN2LP/AIN3L, AIN2LN/AIN4L, AIN2RP/AIN3R, AIN2RN/AIN4R,
AIN5L, GNDIN5, AIN5R, AINMP/AINM, AINMN, AOUT1L,
AOUT1R, AOUT2L, AOUT2R
CLKO, XTO, SDOUT1, SDOUT2/GPO0, SDOUT3/GPO1,
Open
STO/RDY/SDOUT4, SDOUT5/GPO2, SDOUT6/DIT/GPO3
Digital
XTI , SDIN6, SDIN5/JX0, SDIN4, SDIN3/JX1, SDIN2/JX0, SDIN1, Connect to
LRCK1, BICK1, LRCK2, BICK2, LRCK3/JX2, BICK3/JX3, LRCK4, DVSS1 ~ 3
BICK4, LRCK5, BICK5, TESTI
Table 1. Handling of Unused Pins
Note 2. Although it is recommended that the LRCK1, BICK1, LRCK2, BICK2, LRCK3/JX2, BICK3/JX3,
LRCK4, BICK4, LRCK5 and BICK5 pins are connected to DVSS1-3 when not using, they can be
open since they are pulled down internally.
■ Internal Pulled-down Pin Status
Internal pulled-down I/O pins have different statuses in power-down and power-down release statuses.
No
Pin Name
I/O
Power Down Status
PDN pin = “L”
Power Down Release Power Down Release
PDN pin = “H”
PDN pin = “H”
(when I/O pin = Input) (when I/O pin = Output)
3
TESTI
I Pulled-down (25kΩ) Pulled-down (25kΩ) Pulled-down (25kΩ)
4
LRCK5
I/O Pulled-down (50kΩ) Pulled-down (46kΩ)
Output
5 SDOUT5/GPO2 O Pulled-down (50kΩ)
Output
Output
6
BICK5
I/O Pulled-down (50kΩ) Pulled-down (46kΩ)
Output
7
CLKO
O Pulled-down (50kΩ)
Output
Output
8 SDOUT6/DIT/GPO3 O Pulled-down (50kΩ)
Output
Output
16
LRCK2
I/O Pulled-down (50kΩ) Pulled-down (46kΩ)
Output
17
BICK2
I/O Pulled-down (50kΩ) Pulled-down (46kΩ)
Output
18 SDOUT2/GPO0 O Pulled-down (50kΩ)
Output
Output
20
LRCK1
I/O Pulled-down (50kΩ) Pulled-down (46kΩ)
Output
21
BICK1
I/O Pulled-down (50kΩ) Pulled-down (46kΩ)
Output
22
SDOUT1
O Pulled-down (50kΩ)
Output
Output
26
LRCK3/JX2
I/O Pulled-down (50kΩ) Pulled-down (46kΩ)
Output
27
BICK3/JX3
I/O Pulled-down (50kΩ) Pulled-down (46kΩ)
Output
28
LRCK4
I/O Pulled-down (50kΩ) Pulled-down (46kΩ)
Output
29
BICK4
I/O Pulled-down (50kΩ) Pulled-down (46kΩ)
Output
32 SDOUT3/GPO1 O Pulled-down (50kΩ)
Output
Output
33 STO/RDY/SDOUT4 O Pulled-down (50kΩ)
Output
Output
39
AVDRV
O Pulled-down (70Ω)
Output
Output
Table 2. Internal Pulled-down Pin Status
015000122-E-00-PB
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2015/01