Datasheet

61Maxim Integrated
SFP Controller for Dual Rx Interface
DS1877
Table 02h, Register CEh–CFh: RESERVED
Table 02h, Register CCh–CDh: DAC1 VALUE
Table 02h, Register D0h–FFh: EMPTY
FACTORY DEFAULT 0000h
READ ACCESS PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
WRITE ACCESS (PW2 and DAC1EN = 0) or (PW1 and RWTBL2 and DAC1EN = 0)
A2h AND B2h MEMORY Common A2h and B2h memory locations
MEMORY TYPE Volatile
CCh 0 0 0 0 0 0 2
9
2
8
CDh 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT 7 BIT 0
The digital value used for DAC1 VALUE. It is the result of LUT4 plus DAC1 OFFSET times 4 recalled from
Address A0h, Table 04h (Registers F8h–FFh) at the adjusted memory address found in TINDEX. This register is
updated at the end of the temperature conversion.
DAC1 VALUE = LUT4 + DAC1 OFFSET x 4
REFIN
DAC1 d
V
V DAC1 VALUE
1024
= ×
(if POLARITY = 0)
REFIN
DAC1 REFIN d
V
V V DAC1 VALUE
1024
=−×
(if POLARITY = 1)
FACTORY DEFAULT 00h
READ ACCESS N/A
WRITE ACCESS N/A
A2h AND B2h MEMORY N/A
MEMORY TYPE N/A
These registers do not exist.
FACTORY DEFAULT 00h
READ ACCESS N/A
WRITE ACCESS N/A
A2h AND B2h MEMORY N/A
MEMORY TYPE None
These registers do not exist.