RM0082
Pin description
Doc ID 018672 Rev 1
Table 12.
Available peripherals in each configuration mode
TDM interfacing using GPIOs
In some configuration modes where less than 8 TDM devices are indicated in
additional TDM devices can be supported by using GPIO pins. The TDM needs a dedicated
interrupt line, an SPI and an independent frame sync signal to interface each device. When
enough SPI chip selects signals are not available (SPI_I2C signals), the chip select can be
performed by a GPIO. In this case the number of possible TDM devices supported is:
●
Modes 5, 7, 8 and 9: up to 8 devices
●
Modes 3 and 10: up to 6 devices
●
Modes 11 and 12: up to 4 devices
Mo
de
s
FSMC
Bo
ot
pi
ns
SPI/I
2C
Multi sla
ve contr
o
l
I2S
CLC
D
DA
C
C
a
me
ra
in
te
rfa
c
e
TDM
No o
f v
o
ice
de
vices
SDIO
/MM
C
data l
ines
Key
b
o
a
rd
ke
y
s
GPIOs
Max. n
o
. o
f I/
Os
Bi
di
rec
tio
na
l
In
p
u
t onl
y
O
u
tp
ut on
ly
Spe
c
ia
l o
u
tpu
ts
(sync)
Max. n
o
. o
f I/
Os
wi
th In
terrup
t
1
16-bit
NAND
4
18
6
12
6
2
16-bit
NOR
4
18
6
12
6
3
16-bit
NAND
1
1
8
28
28
22
4
8
1
1
8
8
9*9
62
38
8
12
4
14
5
4
1
1
1
2
8
9*9
42
38
4
14
6
8
1
1
8
8
9*9
58
38
8
8
4
14
7
4
1
1
1
2
8
9*9
42
38
4
14
8
8-bit
NOR
8
8
4
44
24
8
8
4
14
9
8-bit
NAND
/NOR
8
1
1
4
4
42
24
8
8
2
14
10
4
1
1
8-bit
2
8
9*9
36
32
4
10
11
1
1
1
14-bit
2
8
7*5
26
26
10
12
1
1
14-bit
2
8
7*5
26
26
10
13
4
1
1
1
8-bit
2
8
9*9
32
28
4
6