Slave address register, Register bit assignment, Register register bit assignment – Digi NS9215 User Manual
Page 453
. . . . .
I 2 C M A S T E R / S L A V E I N T E R F A C E
Slave Address register
www.digiembedded.com
453
Register bit
assignment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
S l a v e A d d r e s s r e g i s t e r
Address: 9005 0008
If using 7-bit addressing, the slave device address field uses only bits D07:01;
otherwise, bits 10:01 are used.
Register
Register bit
assignment
Bits
Access
Mnemonic
Reset
Description
D10:01
R/W
MDA
0x0
Master device address
Used for selecting a slave.
Represents bits 6:0 of the device address if using
7-bit address. D10:08 are not used.
Represents bits 9:0 of device address if using
10-bit address.
D00
R/W
MAM
0x0
Master addressing mode
07 bit address mode
110 bit address mode
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
Reserved
Slave device address
Slave
addr
mode
Reserved
Gnrl
call
addr
Bits
Access
Mnemonic
Reset
Description
D11
R/W
GCA
0x0
General call address (
s_gca_irq_en
)
Enable the general call address.
D10:01
R/W
SDA
0x3FF
Slave device address
Represents bits 6:0 of device address if using 7-
bit address; D10:08 are not used.
Represents bits 9:0 of device address if using
10-bit address.
D00
R/W
SAM
0x0
Slave addressing mode
07 bit address mode
110 bit address mode