ssm2602 Analog Devices, Inc., ssm2602 Datasheet - Page 13

• Manufacturer Part Number: ssm2602
• Description: Low Power Audio Codec
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
SOFTWARE CONTROL INTERFACE
The software control interface can be operated with a 3-wire (SPI)
or 2-wire (I
achieved by setting the state of the MODE pin.
Table 8. Selecting the Interface Format
MODE Pin Setting
0
1
A(M) = ACKNOWLEGE BY MASTER.
A(M) = ACKNOWLEGE BY MASTER.
A(S) = ACKNOWLEGE BY SLAVE.
S/P = START/STOP BIT.
SEQUENCE
SEQUENCE
A0 = I
WRITE
2
2
READ
C) interface. Selection of the interface format is
C R/W BIT.
S
S
CCLK
NOTES
1. B15 TO B9 ARE REGISTER MAP ADDRESS.
2. B8 TO B0 ARE REGISTER DATA.
SDIN
CSB
A7
A7
ADDRESS
ADDRESS
SCLOCK
DEVICE
DEVICE
SDATA
...
...
Interface
2-wire (I
3-wire (SPI) interface
B15
A1
A1
START
B14
A0
A0
0
0
S
2
C) interface
A(S)
B13
A(S)
ADDR
1 – 7
B12
B15
B15
Figure 20. SSM2602 2-Wire I
REGISTER
REGISTER
ADDRESS
ADDRESS
B11
R/W
...
...
Figure 21. SSM2602 I
8
B9
B9
B10
ACK
9
B8
0
B09
Figure 19. SPI Serial Interface
A(S)
A(S)
Rev. PrB | Page 13 of 28
REGISTER
SUBADDRESS
B08
1 – 7
DATA
B7
S
2
C Write and Read Sequences
B07
2
C Generalized Clocking Diagram
...
A7
ADDRESS
8
DEVICE
B06
B0
...
In 3-wire (SPI) mode, SDIN is used for the program data, SCLK
is used to clock in the program data, and CSB is used to latch in
the program data. In 2-wire (I
data, SCLK is used for the serial clock, and the state of the CSB
pin allows the user to select one of two addresses (see Table 9).
Table 9. Selecting the Address
CSB Pin Setting
0
1
ACK
9
B05
A1
A(S)
A0
1
B04
P
A(S)
DATA
1 – 7
B03
B7
B02
8
...
B01
ACK
B0
Address
0011010
0011011
9
(SLAVE DRIVE)
B0
A(M)
REGISTER
DATA
2
STOP
C) mode, SDIN is used for serial
P
0
...
0
B8
A(M)
SSM2602
P