Bit
Bit name
Function
PINMUX[3:0]
Pin multiplex option
0001
B
1
0010
B
2
0011
B
3
0110
B
6
0111
B
7
1001
B
9
all other settings
prohibited
Caution
When changing PINMUX[3:0] or any SMUX bit make sure that the related
interfaces are not active at the time of change and 50 ns after the change.
When changing PINMUX[3:0] it is recommended to issue a software reset by
SYSRESET.SWRESET = 1 afterwards.
BUFPUEN[7:0]
Each of the SYSPINMUX.BUFPUEN[7:0] bits en-/disables internal pull-up
resistors for one of the pin groups 7 to 0. The reset values of BUFPUEN[7:0]
depend on the boot mode selection MODE[11:0].
The reference between SYSBOOTMODE.BOOTMODE[11:0] and the reset values
of SYSPINMUX for both devices are given in tables below.
For further information concerning the pin groups 7 to 0 refer to the chapter "Pin
Function".
Ravin-M
For Ravin-M (SYSBOOTMODE.BOOTMODE8 = 1) the reset value of
SYSPINMUX.BUFPUEN[7:0] depend on the chosen pin multiplex option
SYSBOOTMODE.BOOTMODE[3:0] (MODE[3:0] pin).
Table 4-12 Ravin-M SYSPINMUX reset values
SYSBOOTMODE.
BOOTMODE[3:0]
SYSPINMUX.BUFPUEN
SYSPINMUX
reset value
7
6
5
4
3
2
1
0
0001
B
1
1
0
0
0
0
0
0
00C0 0001
H
0010
B
1
1
0
0
0
0
0
0
00C0 0002
H
0011
B
1
1
0
0
1
1
0
1
00CD 0003
H
0110
B
1
1
0
0
0
0
0
0
00C0 0006
H
0111
B
1
0
0
0
0
0
0
0
0080 0007
H
1001
B
1
1
0
0
1
0
0
0
00C8 0009
H
Ravin-L
For Ravin-L (SYSBOOTMODE.BOOTMODE8 = 0) the reset value of
SYSPINMUX.BUFPUEN[7:0] depend on SYSBOOTMODE.BOOTMODE9
(MODE9 pin), which en-/disables the internal SRAM after RESET release.
Note that Ravin-L offers only a single pinout option with
SYSBOOTMODE.BOOTMODE[3:0] = 0011
B
.
Chapter 4
System Controller
112
Preliminary User's Manual S19203EE1V3UM00
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