CS4231A Datasheet, PDF (48/76 Pages) List of Unclassifed Manufacturers – PARALLEL INTERFACE MULTIMEDIA AUDIO CODEC

CS4231A
VD1
DGND1
D3
D2
D1
D0
VD2
DGND2
A1
A0
CDAK
CDRQ
PDAK
PDRQ
VD3
DGND3
XTAL1I
XTAL1O
VD4
DGND4
XTAL2I
XTAL2O
PDWN
* NC (VDD)
* NC (GNDD)
RFILT
RLINE
RMIC
LMIC
LLINE
LFILT
VREF
VREFI
AGND1
Parallel Bus Interface Pins
9 7 5 3 1 67 65 63 61
11
59
13
CS4231A
57
15
68-pin
55
17
PLCC
53
19
(L)
51
21
49
Top View
23
47
25
45
27 29 31 33 35 37 39 41 43
* see Power Supply section
D4
D5
D6
D7
DGND8
DBEN
DBDIR
WR
RD
CS
XCTL1
IRQ
XCTL0
TEST
* NC (VDD)
DGND7
SDOUT
SCLK
FSYNC
SDIN
NC
MOUT
MIN
* NC (V_DD)
* NC (GNDD)
RAUX2
RAUX1
ROUT
LOUT
LAUX1
LAUX2
AGND2
VA2
VA1
CDRQ - Capture Data Request, Output, Pin 12 (L), Pin 7 (Q).
The assertion of this signal indicates that the codec has a captured audio sample ready for
transfer. This signal will remain asserted until all the bytes from the capture buffer have been
transferred.
CDAK - Capture Data Acknowledge, Input, Pin 11 (L), Pin 6 (Q).
The assertion of this active low signal indicates that the RD cycle occurring is a DMA read
from the capture from the buffer.
PDRQ - Playback Data Request, Output, Pin 14 (L), Pin 9 (Q).
The assertion of this signal indicates that the codec is ready for more playback data. The signal
will remain asserted until the bytes needed for a playback sample have been transferred.
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