- 7 -
© Andigilog, Inc. 2006
www.andigilog.com
August 2006 - 70A04010
aSC7511
Status Register
The status register is a read-only register for reporting the
state of the aSC7511’s alarms. It is a read-only register
located at 02h.
Bit
Name
Function
0
LTHERM
Local sensor > THERM limit
1
RTHERM
Remote sensor > THERM limit
2
ROPEN
Remote sensor open-circuit
3
RLOW
Remote sensor ≤ low limit
4
RHIGH
Remote sensor > high limit
5
LLOW
Local sensor ≤ low limit
6
LHIGH
Local sensor > high limit
7
BUSY
Converter in process of conversion
When any high or low local limits or high or low remote
limits are exceeded, bits 3 through 6 are set accordingly
and the ALERT pin 6 will be driven low. If the remote
sensor is open-circuit, bit 2 will be set and the ALERT will
be asserted. Reading the status register will re-set these
flags if the alerted condition has been removed, however,
the ALERT pin will remain asserted until the master has
serviced the SMBus alert.
The local and remote THERM limit trip are reported in bits 0
and 1 respectively. These two bits are reset only by the
temperature falling below the THERM limit by the amount
set into the hysteresis register.
Table 3. Status Register Bit Assignments
Bit 7 will be high when the converter is busy. The list of
status register bit assignments is in Table 3. Each condition
is asserted when the bit is high. Default is 0.
Read
Address
Write
Address
Description
Default
Value
Read
Address
Write
Address
Description
Default
Value
n/a
n/a
Address Pointer
n/a
00h
n/a
Local Temperature (high-byte)
2
00h / 0
°C
01h
n/a
Remote Temperature (high-byte)
2
00h
10h
n/a
Remote Temperature (low-byte)
2
00h / 0
°C
02h
n/a
Status
n/a
03h
09h
Configuration
00h
04h
0Ah
Conversion rate
08h
05h
0Bh
Local High Limit
55h / 85
°C
06h
0Ch
Local Low Limit
00h / 0
°C
07h
0Dh
Remote High Limit (high-byte)
2
55h / 85
°C
13h
13h
Remote High Limit (low-byte)
2
00h / 0
°C
08h
0Eh
Remote Low Limit (high-byte)
2
00h / 0
°C
14h
14h
Remote Low Limit (low-byte)
2
00h / 0
°C
n/a
0Fh
One-Shot Measurement
n/a
11h
11h
Remote Temp. Offset (high-byte)
2
00h / 0
°C
12h
12h
Remote Temp. Offset (low-byte)
2
00h / 0
°C
19h
19h
Remote
THERM Limit
55h / 85
°C
20h
20h
Local THERM Limit
55h / 85
°C
21h
21h
THERM Hysteresis
0Ah /
10
°C
22h
22h
Consecutive ALERT
01h
FEh
n/a
Manufacturer ID
61h
FFh
n/a
Die Revision Code
00h
Notes:
1. Low-byte values are fractional degrees, MSB of lower byte is 0.5°C
2. Changing to extended range adds 64°C to values reported, but limit settings are not changed and must be corrected by the user.
Table 4. aSC7511 Registers
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
