ds1878 Maxim Integrated Products, Inc., ds1878 Datasheet - Page 41

• Manufacturer Part Number: ds1878
• Description: Sfp+ Controller With Digital Ldd Interface
• Manufacturer: Maxim Integrated Products, Inc.

Lower Memory, Register 6Eh: STATUS
Write Access
6Eh
SFP+ Controller with Digital LDD Interface
POWER-ON VALUE
READ ACCESS
WRITE ACCESS
MEMORY TYPE
TXDS
BIT 7
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
______________________________________________________________________________________
N/A
TXDS: TXD Status Bit. Reflects the logic state of the TXD pin (read only).
0 = TXD pin is logic-low.
1 = TXD pin is logic-high.
TXDC: TXD Software Control Bit. This bit allows for software control that is identical to the TXD pin.
See the section on TXD for further information. Its value is wire-ORed with the logic value of the
TXD pin (writable by all users).
0 = (Default).
1 = Forces the device into a TXD state regardless of the value of the TXD pin.
IN1S: IN1 Status Bit. Reflects the logic state of the IN1 pin (read only).
0 = IN1 pin is logic-low.
1 = IN1 pin is logic-high.
RSELS: RSEL Status Bit. Reflects the logic state of the RSEL pin (read only).
0 = RSEL pin is logic-low.
1 = RSEL pin is logic-high.
RSELC: RSEL Software Control Bit. This bit allows for software control that is identical to the RSEL
pin. Its value is wire-ORed with the logic value of the RSEL pin to create the RSELOUT pin’s logic
value (writable by all users).
0 = (Default).
1 = Forces the device into a RSEL state regardless of the value of the RSEL pin.
TXFOUTS: TXFOUT Status. Indicates the state the open-drain output is attempting to achieve.
0 = TXFOUT is pulling low.
1 = TXFOUT is high impedance.
RXL: Reflects the driven state of the LOSOUT pin (read only).
0 = LOSOUT pin is driven low.
1 = LOSOUT pin is pulled high.
RDYB: Ready Bar.
0 = V
1 = V
TXDC
All
CC
CC
is above POA.
is below POA and/or too low to communicate over the I
X0XX 0XXXb
All
See below
Volatile
IN1S
N/A
RSELS
All
RSELC
All
TXFOUTS
N/A
2
C bus.
RXL
N/A
RDYB
BIT 0
N/A
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