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NXP Semiconductors
PT2001SWUG
PT2001 programming guide and instruction set
PT2001SWUG
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© NXP B.V. 2019. All rights reserved.
User guide
Rev. 3.0 — 29 April 2019
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stslew
Description:
Defines the outputs slew rate mode with the Boolean SlMode.
The operation is successful only if the microcore has the right to drive the related outputs.
The drive right is granted by setting the related bits in the Out_acc_ucX_chY (184h,
185h, 186h, 187h) configuration registers.
The SlMode reset value is normal.
When switching the slew-rate from slow to fast, the new slew-rate is valid after typically
one ck cycle (166 ns considering fCK = 6.0 MHz). When switching from fast to slow, it
takes typically four ck cycles (666 ns considering fCK = 6.0 MHz) until the new slew-rate
is effective.
Assembler syntax:
stslew SlMode;
Operands:
•
SlMode – Operands sets outputs slew rate mode
Operand label
Operand description
normal
The outputs slew rate is set by an SPI register
fast
The outputs slew rate is the highest one
Table 114. stslew instruction format
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
1
1
0
1
0
1
1
0
0
1
0
1
1
SlMode