Environmental Monitoring and Control Device
Datasheet
8.8
Register 3Eh: Company ID
BIT 7
(MSB)
BIT 0
(LSB)
REGISTER
ADDRESS
READ/
WRITE
REGISTER
NAME
DEFAULT
VALUE
BIT 6 BIT 5 BIT 4 BIT 3 BIT 2 BIT 1
3Eh
R
Company ID
7
6
5
4
3
2
1
0
5Ch
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.
8.9
Register 3Fh: Version / Stepping
BIT 7
(MSB)
BIT 0
(LSB)
REGISTER
ADDRESS
READ/
WRITE
REGISTER
NAME
DEFAULT
VALUE
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
Version /
Stepping
VER3
VER2 VER1 VER0 STP3
STP2
STP1
STP0
3Fh
R
60h
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, this register will read 01100000b.
EMC6D100/EMC6D101, this register will read 01100001b.
For the A1 stepping of the
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. Further, application software may use the current stepping 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.
8.10 Register 40h: Ready/Lock/Start Monitoring
BIT 7
(MSB)
BIT 0
(LSB)
REGISTER
ADDRESS
READ/
WRITE
REGISTER
NAME
DEFAULT
VALUE
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
Ready/Lock/St
art
OVR REA
ID DY
LOC
K
STA
40h
R/W
RES
RES RES
RES
00h
RT
Setting the Lock bit makes the Lock and Start bits read-only.
SMSC EMC6D100/EMC6D101
Page 44
Rev. 09-09-04
DATASHEET
SMSC [ SMSC CORPORATION ]
