Rainbow Electronics DS1874 - Manual (Page 59)

DS1874
SFP+ Controller with Digital LDD Interface
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FACTORY DEFAULT 80h
READ ACCESS PW2 or (PW1 and RWTBL246) or (PW1 and RTBL246)
WRITE ACCESS PW2 or (PW1 and RWTBL246)
MEMORY TYPE Nonvolatile (SEE)
89h LOSC RESERVED INV LOS ASEL MASK INVRSOUT RESERVED RESERVED
BIT 7 BIT 0
BIT 7
LOSC: LOS Configuration. Defines the source for the LOSOUT pin (see Figure 13).
0 = LOS LO alarm is used as the source.
1 = (Default) LOS input pin is used as the source.
BIT 6 RESERVED
BIT 5
INV LOS: Inverts the buffered input pin LOS to output pin LOSOUT (see Figure 13).
0 = Noninverted LOS to LOSOUT pin.
1 = Inverted LOS to LOSOUT pin.
BIT 4
ASEL: Address Select.
0 = Device address is A2h.
1 = Byte DEVICE ADDRESS in Table 02h, Register 8Ch is used as the device address.
BIT 3
MASK:
0 = Alarm-enable row exists at Table 01h, Registers F8h–FFh. Table 05h, Registers F8h–FFh are
empty.
1 = Alarm-enable row exists at Table 05h, Registers F8h–FFh. Table 01h, Registers F8h–FFh are
empty.
BIT 2
INVRSOUT: Allow for inversion of RSELOUT pin (see Figure 13).
0 = RSELOUT is not inverted.
1 = RSELOUT is inverted.
BITS 1:0 RESERVED
Table 02h, Register 89h: CNFGA