Datasheet

48 Maxim Integrated
SFP Controller for Dual Rx Interface
DS1877
Table 02h, Register 8Ch: RESERVED
Table 02h, Register 8Dh: FORCE RSSI
FACTORY DEFAULT
READ ACCESS N/A
WRITE ACCESS N/A
A2h AND B2h MEMORY N/A
MEMORY TYPE N/A
This register is 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)
8Dh RESERVED XOVEREN2 RSSI2_FC RSSI2_FF RESERVED XOVEREN1 RSSI1_FC RSSI1_FF
BIT 7 BIT 0
BITS 7, 3 RESERVED
BIT 6
XOVEREN2: Enables RSSI conversion to use the XOVER2 value during RSSI2 conversions.
0 = Uses hysteresis for linear RSSI measurements.
1 = XOVER2 value is enabled for nonlinear RSSI measurements.
BITS 5:4
RSSI2_FC and RSSI2_FF: RSSI2 force coarse and RSSI2 force fine. Control bits for RSSI mode of
operation on the RSSI2 conversion.
00b = (default) Normal RSSI mode of operation.
01b = The fine settings of scale and offset are used for RSSI2 conversions.
10b = The coarse settings of scale and offset are used for RSSI2 conversions.
11b = Normal RSSI mode of operation.
BIT 2
XOVEREN1: Enables RSSI conversion to use the XOVER1 value during RSSI1 conversions.
0 = Uses hysteresis for linear RSSI measurements.
1 = XOVER1 value is enabled for nonlinear RSSI measurements.
BITS 1:0
RSSI1_FC and RSSI1_FF: RSSI1 force coarse and RSSI1 force fine. Control bits for RSSI mode of
operation on the RSSI1 conversion.
00b = (default) Normal RSSI mode of operation.
01b = The fine settings of scale and offset are used for RSSI1 conversions.
10b = The coarse settings of scale and offset are used for RSSI1 conversions.
11b = Normal RSSI mode of operation.