EMC2300-AZC-TR SMSC, EMC2300-AZC-TR Datasheet - Page 53

• Manufacturer Part Number: EMC2300-AZC-TR
• Description: Industrial Temperature Sensors Auto Fan Contrllr Up to 4 Fans
• Manufacturer: SMSC

Specifications of EMC2300-AZC-TR

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Fan Control Device with High Frequency PWM and Temperature Monitors
Datasheet
SMSC EMC2300
8.2.5
8.2.6
8.2.7
Register
Address
Register
Address
Register
Address
40h
3Eh
3Fh
Read/
Write
R/W
Read/
Read/
Write
Write
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
EMC2300
is enhanced from previous hardware monitoring standards. The four most significant bits [7:4] reflect
the version number, which will be fixed at 0110b. For the A0 stepping of this device, the register will
read 01101000b. For the A1 stepping, this register will read 01101001b and so on.
The register is used by application software to identify which device 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.
Register 40h: Ready/Lock/Start Monitoring
Setting the Lock bit makes the Lock bit read only.
R
R
silicon. Stepping numbers are to begin from a value of 08h, to indicate that the register set
Ready/Lock/Start
Register Name
Version / Stepping
Register Name
Register Name
Table 8.11 Register 40h: Ready/Lock/Start Monitoring
Company ID
Table 8.10 Register 3Fh: Version / Stepping
Table 8.9 Register 3Eh: Company ID
(MSb)
Bit 7
RES
DATASHEET
(MSb)
(MSb)
VER3
Bit 7
Bit 7
7
Bit 6
RES
53
Bit 6
Bit 6
VER
Bit 5
RES
6
2
Bit 5
Bit 5
VER
Bit 4
RES
5
1
Bit 4
Bit 4
VER
OVRID
4
0
Bit 3
Bit 3
Bit 3
STP
3
3
READY
Bit 2
Bit 2
Bit 2
STP
2
2
LOCK
Bit 1
Bit 1
Bit 1
STP
Revision 0.32 (06-23-08)
1
1
START
(LSb)
(LSb)
(LSb)
STP0
Bit 0
Bit 0
Bit 0
0
Default
Default
Default
Value
Value
Value
5Ch
6Ah
00h