EMC6D100-DK SMSC [SMSC Corporation], EMC6D100-DK Datasheet - Page 44

• Manufacturer Part Number: EMC6D100-DK
• Description: ENVIRONMENTAL MONITORING AND CONTROL DEVICE WITH AUTOMATIC FAN CAPABILITY
• Manufacturer: SMSC [SMSC Corporation]

8.8
8.9
8.10
SMSC EMC6D100/EMC6D101
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
3Eh
3Fh
40h
Register 3Eh: Company ID
The Company ID register contains the company identification number. This number is a method for
uniquely identifying the part manufacturer.
This register is read only – a write to this register has no effect.
Register 3Fh: Version / Stepping
The four least significant bits of the Version / Stepping register [3:0] contain the current stepping of the
EMC6D100/EMC6D101 silicon. The four most significant bits [7:4] reflect the EMC6D100/EMC6D101
version number. The EMC6D100/EMC6D101 has a fixed version number of 0110b. For the A0 stepping of
EMC6D100/EMC6D101,
EMC6D100/EMC6D101, this register will read 01100001b.
The register is used by application software to identify which device in the EMC family of monitoring ASICs
has been implemented in the given system. Based on this information, software can determine which
registers to read from and write to.
implement work-arounds for bugs found in a specific silicon stepping.
This register is read only – a write to this register has no effect.
Register 40h: Ready/Lock/Start Monitoring
Setting the Lock bit makes the Lock and Start bits read-only.
WRITE
WRITE
WRITE
READ/
READ/
READ/
R/W
R
R
Ready/Lock/St
Company ID
REGISTER
REGISTER
REGISTER
Version /
Stepping
NAME
NAME
NAME
art
this
(MSB)
(MSB)
DATASHEET
(MSB)
VER3
BIT 7
BIT 7
RES
BIT 7
register
7
VER2
BIT 6
BIT 6
RES
Further, application software may use the current stepping to
BIT 6
6
will
Page 44
VER1
read
BIT 5
BIT 5
RES
BIT 5
5
01100000b.
VER0
BIT 4
BIT 4
BIT 4
RES
4
BIT 3
STP3
BIT 3
BIT 3
OVR
ID
3
Environmental Monitoring and Control Device
BIT 2
For
STP2
BIT 2
BIT 2
REA
DY
2
the
BIT 1
STP1
BIT 1
BIT 1
LOC
1
K
A1
(LSB)
BIT 0
stepping
(LSB)
(LSB)
STP0
BIT 0
BIT 0
STA
RT
0
Rev. 09-09-04
DEFAULT
DEFAULT
DEFAULT
Datasheet
VALUE
VALUE
VALUE
of
5Ch
60h
00h
the