Datasheet

22 Atmel AT30TS00 [Preliminary]
8585B−SEEPR−8/10
6.10. SMBus Register (16-bit Write / Read only, Address = 22h)
The SMBus Register allows the user to enable or disable the SMBus time out feature (See Table 19 and Table
20).
Table 6-19. SMBus Register Bit Distribution
Bit 15 14 13 12 11 10 9 8
Symbol RFU
Default Value 0 0 0 0 0 0 0 0
R / W access R R R R R R R R
Bit 7 6 5 4 3 2 1 0
Symbol SMBOUT RFU
Default Value 0 0 0 0 0 0 0 0
R / W access R/W R R R R R R R
Table 6-20. SMBus Register Bit Distribution
Bit Symbol Description
15:8 RFU Reserved for future use. Read as ‘0’
7 SMBOUT SMBus Timeout
0 = SMBus timeout is enabled
1= SMBus timeout is disabled
6:0 RFU Reserved for future use. Read as ‘0’
7. TS Write Operations
Writing to the Atmel
®
AT30TS00 Temperature register set is accomplished through a modified write operation for
two data bytes. To maintain two-wire compatibility, the 16-bit register is accessed through a pointer register,
requiring the write sequence to include an address pointer in addition to the device address. This indicates the
storage location for the next two bytes received. Figure 7-1 shows an entire write transaction on the bus.
Figure 7-1. TS Register Write Operation
0 0 1 1 A2 A1 A0
S
T
A
R
T
DEVICE
ADDRESS
R
/
W
A
C
K
A
C
K
A
C
K
A
C
K
REGISTER
POINTER
DATA
MSB
DATA
LSB
S
T
O
P
W
R
I
T
E