CS4231A Datasheet, PDF (69/76 Pages) List of Unclassifed Manufacturers – PARALLEL INTERFACE MULTIMEDIA AUDIO CODEC

CDB4231/4248
;PALASM Design Description
; CDB4231 Rev. D
;---------------------------------- Declaration Segment ------------
TITLE
Address Decode for CS4231 and Read ID
PATTERN AD31.PDS
REVISION 2.0
AUTHOR Clif Sanchez
COMPANY Crystal Semiconductor
DATE
10/15/93
CHIP _AD31 PAL20V8
;---------------------------------- PIN Declarations ---------------
PIN 1
AEN
; Eight addresses in all.
PIN 2
A2
; The first four addresses are used by the
PIN 3
A3
;
board PLD ID31 - address select RDID.
PIN 4
A4
; The second four addresses are used by the
PIN 5
A5
;
CS4231/4248.
PIN 6
A6
PIN 7
A7
; Base Address: X1,X0 (header J18)
PIN 8
A8
;
1 1 530-537, codec 534
PIN 9
A9
;
1 0 604-60B, codec 608
PIN 10
A10
;
0 1 E80-E87, codec E84
PIN 11
A11
;
0 0 F40-F47, codec F44
PIN 13
PIN 14
PIN 15
PIN 16
PIN 17
PIN 18
PIN 19
PIN 20
PIN 21
PIN 22
PIN 23
X0
X1
/DBENP
/IOR
A0
BA0
/RDID
RESDRV
/CCS
/CRES
/DBEN
; I - Address selector X1,X0:
;I-
; O - Data Bus Enable Prime for 245 chip
; I - Qualifies Read ID enable
; I - from bus
; O - Buffered A0 (PLD just used for buffer)
; O - Read ID register enable
; I - Global Reset
; O - Chip Select for Codec
; O - Inverted RESDRV - to codec PWDN pin
; I - Data Bus Enable from codec
;----------------------------------- Boolean Equation Segment ------
EQUATIONS
/BA0
= /A0
RDID
= /A11*A10*/A9* A8*/A7*/A6* A5* A4*/A3*/A2*/AEN*IOR* X1* X0 ; 530-533
+ /A11*A10* A9*/A8*/A7*/A6*/A5*/A4*/A3* A2*/AEN*IOR* X1*/X0 ; 604-607
+ A11*A10* A9*/A8* A7*/A6*/A5*/A4*/A3*/A2*/AEN*IOR*/X1* X0 ; E80-E83
+ A11*A10* A9* A8*/A7* A6*/A5*/A4*/A3*/A2*/AEN*IOR*/X1*/X0 ; F40-F43
CCS
= /A11*A10*/A9* A8*/A7*/A6* A5* A4*/A3* A2*/AEN* X1* X0 ; 534-537
+ /A11*A10* A9*/A8*/A7*/A6*/A5*/A4* A3*/A2*/AEN* X1*/X0 ; 608-60B
+ A11*A10* A9*/A8* A7*/A6*/A5*/A4*/A3* A2*/AEN*/X1* X0 ; E84-E87
+ A11*A10* A9* A8*/A7* A6*/A5*/A4*/A3* A2*/AEN*/X1*/X0 ; F44-F47
DBENP
= DBEN
+ /A11*A10*/A9* A8*/A7*/A6* A5* A4*/A3*
/AEN* X1* X0 ; 530-537
+ /A11*A10* A9*/A8*/A7*/A6*/A5*/A4*/A3* A2*/AEN* X1*/X0 ; 604-607
+ /A11*A10* A9*/A8*/A7*/A6*/A5*/A4* A3*/A2*/AEN* X1*/X0 ; 608-60B
+ A11*A10* A9*/A8* A7*/A6*/A5*/A4*/A3*
/AEN*/X1* X0 ; E80-E87
+ A11*A10* A9* A8*/A7* A6*/A5*/A4*/A3*
/AEN*/X1*/X0 ; F40-F47
CRES = RESDRV
Address PLD - AD31
DS111DB7
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