cs4924 Cirrus Logic, Inc., cs4924 Datasheet - Page 42

• Manufacturer Part Number: cs4924
• Description: Multi-channel Digital Audio Decoders Logic
• Manufacturer: Cirrus Logic, Inc.

42
EMAD7:0
EXTMEM
EMOE
CS4923/4/5/6/7/8/9
EMAD[7:0]
E X T M E M
E M W R
E M O E
3.3V
Figure 21. External Memory Interface
Figure 22. Run-Time Memory Access
8
3.3V
3.3V
R1
R2
3.3V
R3
R4
D
8 BIT
'574
D F F
Only one of R1 and R2 shou ld be stuffed.
Only one of R3 and R4 shou ld be stuffed.
The state of EMOE and EMWR at the
rising edge of RESET will determine the
serial mode that the part comes up in
while using exter nal memory. Please see
section 2, Serial Communication for
more d etails.
Q
D
8 BIT
'574
D F F
MA15:8
ADDR[7:0]
Q
ADDR[15:8]
O E
C S
ADDR[7:0]
ADDR[15:8]
MA7:0
CS4923/4/5/6/7/8/9
64K X 8
R O M
D A T A[7:0]
Data7:0
DS262F2