User guide

APR6008
Page 4 Voice Recording & Playback Device
Revision 2.1
Figure 4Sending SPI Commands
Figure 5OpCode Format
Figure 6Opcode Stream Timing
Op4
Op3
Op2 Op1
T
suDI
A1A2
T
fCS
T
rCS
~
~
~
~
~
~
T
hDI
/CS
SCLK
DI
~
~
~
~
~
~
A0
T
pSCLK
T
loSCLK
T
hiSCLK
T
next1
, T
next2
, T
next3
, T
next4
Op4Op3 Op1Op0A14A13A12A11A10 A9 A8 A7 A6Op2
{
{
First bit shifted in
Last bit shifted in
A5 A4 A3 A2 A1
OpCode Command OpCode Parameter
A0
Current Command Next Command
T
next1
,T
next2
,T
next3
,T
next4
/CS
SCLK
DI