Datasheet

60 Maxim Integrated
SFP Controller for Dual Rx Interface
DS1877
Table 02h, Register C7h: TBLSELPON
Table 02h, Register C8h–C9h: DAC2 VALUE
Table 02h, Register CAh–CBh: RESERVED
FACTORY DEFAULT 00h
READ ACCESS PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
WRITE ACCESS PW2 or (PW1 and RWTBL2)
A2h AND B2h MEMORY Common A2h and B2h memory locations
MEMORY TYPE Nonvolatile (SEE)
C7h 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
BIT 7 BIT 0
Chooses the initial value for the TBL SEL byte (Lower Memory, Register 7Fh) at power-on.
FACTORY DEFAULT 0000h
READ ACCESS PW2 or (PW1 and RWTBL2) or (PW1 and RTBL2)
WRITE ACCESS (PW2 and DAC2EN = 0) or (PW1 and RWTBL2 and DAC2EN = 0)
A2h AND B2h MEMORY Common A2h and B2h memory locations
MEMORY TYPE Volatile
C8h 0 0 0 0 0 0 2
9
2
8
C9h 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 DAC2 VALUE. It is the result of LUT4 plus DAC2 OFFSET times 4 recalled from
Address B0h, Table 04h (Registers F8h–FFh) at the adjusted memory address found in TINDEX. This register is
updated at the end of the temperature conversion.
DAC2 VALUE = LUT4 + DAC2 OFFSET x 4
REFIN
DAC2 d
V
V DAC2 VALUE
1024
= ×
(if POLARITY = 0)
REFIN
DAC2 REFIN d
V
V V DAC VALUE
1024
=−×
(if POLARITY = 1)
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.