PC87591E Datasheet, PDF (214/437 Pages) National Semiconductor (TI) – LPC Mobile Embedded Controllers

Embedded Controller Modules (Continued)
ACM Configuration Register (ACMCNF)
This register controls the configuration of the ACM module. ACMCNF is cleared (00₁₆) on reset.
Location: 00 FD42₁₆
Type: R/W
Bit
Name
Reset
7
6
Reserved
0
0
5
OVUNSEL
0
4
INTOUEN
0
3
INTEMEN
0
2
Reserved
0
1
0
ACMMOD
0
0
Bit
Description
1-0 ACMMOD (ACM Mode Control). Configures the operation mode of the ACM module. See “ACM Operating
Sequences” on page 211. This value becomes the active mode after writing a 1 to START bit in ACMCTS
register.
Bits
1 0 Description
0 0: ACM disabled (default)
0 1: Voltage Level Burst mode - single measurement of the voltage level for all the eight inputs
1 0: Threshold Comparison Burst mode - single comparison of all the eight inputs to the set threshold
1 1: Low-Power Threshold Comparison mode - periodic comparison of the inputs to a constant threshold
(recommended for Idle PC87591x operation mode). Its operation is stopped by the
selection of a different mode (ACM disabled = 002 is the recommended value).
2 Reserved.
3 INTEMEN (Interrupt from End-of-Measurement Event Enable). Enables generation of an ACM interrupt on an
End of Voltage Measurement Burst event (EOMEV in ACMCTS register).
0: Disabled (default)
1: Enabled - ACM Interrupt from EOMEV
4 INTOUEN (Interrupt from Over/Under Threshold Event Enable). Enables generation of an ACM interrupt on
at least one input above (or below) the threshold event (OVUNTHEV ACMCTS register).
0: Disabled (default)
1: Enabled - ACM Interrupt from OVUNTHEV
5 OVUNSEL (Over or Under Threshold Select). “Any Over” or “Any Under” logic selection for OVUNTHEV bit in
ACMCTS register.
0: At least one input below threshold sets OVUNTHEV=1 (default)
1: At least one input above threshold sets OVUNTHEV=1
7-6 Reserved.
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