Technical Reference Manual
002-29852 Rev. *B
5.1.52 CPUSS_TRIM_ROM_CTL
Description:
ROM trim control
Address:
0x40202100
Offset:
0x2100
Retention:
Retained
IsDeepSleep:
No
Comment:
This register is used to trim ALL ROM memories in the device. Different operating Voltages
may require different trim settings.
Default:
0x0
Bit-field Table
Bits
7
6
5
4
3
2
1
0
Name
TRIM [7:0]
Bits
15
14
13
12
11
10
9
8
Name
TRIM [15:8]
Bits
23
22
21
20
19
18
17
16
Name
TRIM [23:16]
Bits
31
30
29
28
27
26
25
24
Name
TRIM [31:24]
Bit-fields
Bits Name
SW
HW
Default or
Enum
Description
0:31
TRIM
RW
R
ROM_TRIM
_DEFAULT
For ARM ROMs the bits are defined as follows
[2:0] EMA: Extra Margin Adjustment (0 is the fastest
setting)
Recommended default value: EMA=2
(ROM_TRIM_DEFAULT=0x0000_0002,
ROM_TRIM_WIDTH=3)
For Synopsys ROMs the bits are defined as follows:
[3:0] RM: Read-Write margin control. This is used for
setting the Read-Write margin. It programs the sense
amplifier differential setting and allows the trade off
between speed and robustness.
- RM[1:0] values control access time and cycle time of
the memory. RM[1:0] = '0' is the slowest possible
mode of operation for the memory. This setting is
required for VDDMIN operation.
- RM[3:2] are factory pins reserved for debug mode
and should be set to '0'.
[4] RME: Read-Write margin enable control. This
selects between the default Read-Write margin setting,
and the external pin Read-Write margin setting.
Recommended default value for LP: RME=1, RM=2
(ROM_TRIM_DEFAULT=0x0000_0012,
ROM_TRIM_WIDTH=5)
Recommended default value for ULP: RME=1, RM=3
(ROM_TRIM_DEFAULT=0x0000_0013,
ROM_TRIM_WIDTH=5)
755
2022-04-18
TRAVEO™ T2G Automotive MCU: TVII-B-E-4M body controller entry registers