pc87591l National Semiconductor Corporation, pc87591l Datasheet - Page 178

• Manufacturer Part Number: pc87591l
• Description: Lpc Mobile Embedded Controllers
• Manufacturer: National Semiconductor Corporation

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Embedded Controller Modules
ADC Status Register (ADCSTS)
This register indicates the global status of the ADC module. ADCSTS is cleared (00
resets, bit 2 is unchanged and other bits are cleared.
Location: 00 FF20
Type: Varies per bit
Bit
Name
Warm Reset
Power-Up
Reset
7-5
Bit
0
1
2
3
4
R/W1C OVFEV (Data Overflow Event). Measurement data from the previous cycle was overwritten with data
R/W1C OTSEV (Overtemperature Signal Event). Temperature measured by local diode exceeded the limit.
R/W1C OPSHEV (Open/Short Event). Remote diode connection failure (cable shorted or disconnected).
Type
RO
RO
EOCEV (End-of-Cycle Event). End of ADC cycle; all enabled measurements (up to four) are
completed. For each of the enabled channels, the DATVAL bit in the respective TCHANCTL VCHNxCTL
register is set, and the data for the channel is stored in the respective Channel Data Buffer register.
0: Cycle in progress (default)
1: End of ADC cycle (the bit remains set until all DATVAL bits in the Channel Control registers are reset)
from the current cycle before being read. In the event of a data overflow, the DATVAL bit remains set
and new data is placed in Channel Data Buffer register.
0: No overflow (default)
1: Overflow
0: Temperature below or equal to the limit (V
1: Temperature above limit (once set, this bit is cleared by writing 1 to it; writing 0 is ignored)
Checked before the beginning of the remote diode temperature measurement (if enabled, REMDEN in
ADCCNF register and RDMEASEN in TCHANCTL register are set to 1).
0: No fault was detected (default)
1: Connection failure - the cable was shorted or disconnected (once set, this bit is cleared by writing 1 to
OPSHTYPE (Open or Short Type). Remote diode connection failure type. Indicates the type of error
flagged by OPSHEV.
0: DP shorted to DN or to AGND (default)
1: DP disconnected (floating) or shorted to AV
Reserved.
16
7
0
0
it; writing 0 is ignored)
Reserved
6
0
0
(Continued)
5
0
0
OPSHTYPE
178
4
0
0
CC
Description
CC
Power-up reset default)
OPSHEV
3
0
0
OTSEV
16
) on V
2
0
-
CC
Power-Up reset; on other
OVFEV
1
0
0
EOCEV
Revision 1.07
0
0
0