Low-Side Drivers - LSDRV (S12LSDRV2)
MC9S12VRP Family Reference Manual Rev. 1.3
NXP Semiconductors
375
13.3.2
Register Definition
13.3.3
Port LS Data Register (LSDR)
Module Base + 0x0000
Access: User read/write
1
1
Read: Anytime.
The data source (LSDR[LSDRn] or alternate function) depends on the LSCR[LSEn] control bit settings.
Write: Anytime
7
6
5
4
3
2
1
0
R
0
0
0
0
0
0
LSDR1
LSDR0
W
Altern.
Read
Function
0
0
0
0
0
0
OC
2
2
See PIM chapter for detailed routing description.
PWM
PWM
Reset
0
0
0
0
0
0
0
0
= Unimplemented
Figure 13-2. Port LS Data Register (LSDR)
Table 13-4. LSDR Register Field Descriptions
Field
Description
1-0
LSDRx
Port LS Data Bits
—Data registers or routed timer outputs or routed PWM outputs
These register bits can be used to control the low-side drivers if selected as control source. See PIM section for
routing details.
If the associated LSCR[LSEn] bit is set to 0, a read returns the value of the Port LS Data Register (LSDR[LSDRn]).
If the associated LSCR[LSEn] bit is set to 1, a read returns the value of the selected control source for the driver.
When entering in STOP mode the Port LS Data Register (LSDR) is cleared.
0 Low-side driver is turned off
1 Low-side driver is turned on
Note:
After enabling the low-side driver with the LSCR[LSEn] bit, software must wait a minimum settling time
t
LS_settling
before turning on the low-side driver.
Note:
The low-side driver should be turned off (e.g. LSDR[LDSRn]=0 or OC=0 or PWM=0) and the load should be
de-energized before going into Stop Mode or disabling the low-side driver with the LSCR[LSEn] bits.
Summary of Contents for MC9S12VRP64
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