AK7714 Datasheet, PDF (7/48 Pages) Asahi Kasei Microsystems – 20-Bit Audio Codec with DSP and Delay RAM

[ASAHI KASEI]
[AK7714]
Pin No.
42,43
Pin name
DVSS
I/O
Digital Ground
-
Function
Classification
Power supply
44,45
DVDD
+5 V Digital power supply
-
Microcomputer interface Write Request pin
47
WRQ
I
Microcomputer
interface
Microcomputer interface chip selector input pin (Pulldown)
48
CS
I Also used for SO control in addition to chip selection.
When only one AK7714 is used and SO is not used, CS="L" may be used
unchanged. SO and RDY will be Hi-z when CS ="H".
External condition jump pin (Pulldown)
Program control
49
JX
I
Microcomputer interface serial data input pin (Pulldown)
53
SI
I
Microcomputer
interface
Microcomputer interface serial data clock input pin
55
SCLK
I
Clock output control pin (Pulldown)
Control
56
CTRL0
I Use of CTRL0 and CTRL1 allows the CLKO output and LRCLK/BITCLK
outputs
in the master mode to be fixed to “L” or “H”. See Function Description.
CTRL1
CTRL0
CLKO
LRCLK
BITCLK
0
0
Output
Output
Output
1
0
“L”
Output
Output
1
1
“L”
“H”(“L”)
“L”
Reset pin
Reset
57 DSP RESET I Normally, DSP RESET and CODEC RESET are simultaneously controlled for
use.
58 CODEC RESET I
Reset pin (for initialization)
59 INIT RESET I Used to input “L” to initialize the AK7714 at power-on.
M0018-E-00
-7-
‘98/07