PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
Register 0788H: TXPHY Configuration
Bit
Type
Function
Default
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Unused
Unused
X
X
X
X
X
X
0
0
X
1
0
0
0
0
0
1
Unused
Unused
Unused
Unused
R/W
R/W
Reserved
Reserved
Unused
Bit 8
Bit 7
Bit 6
Bit 5
R/W
R/W
R/W
R/W
R/W
R/W
R/W
INBANDADDR
Reserved
Reserved
PARERREN
Reserved
ODDPARITY
TXPRST
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
TXPRST:
The TXPRST bit is used to reset the TXPHY circuitry. When TXPRST is set to logic zero, the
TXPHY operates normally. When TXPRST is set to logic one, the TXPHY ignores all pin
inputs but the registers may be accessed for purposes of initialization. The TXPHY deasserts
all outputs until a logic zero is written to TXPRST.
ODDPARITY:
The ODDPARITY bit is used to set the type of parity that is checked by the TXPHY. When set
to logic 1, odd parity is expected. When set to logic 0, even parity is expected. This bit is
global and affects all PHY channels.
PARERREN:
When set to logic 1, PARERREN will enable the TXPHY to pass an error signal to the TXSDQ
upon detection of a parity error. This will cause the packet to be aborted by the cell
processor. This bit has no effect on ATM cells with parity errors.
INBANDADDR
The INBANDADDR bit is used only in POS-PHY L3 mode to indicate whether the in-band
address is expected on the interface. This bit is useful in single PHY applications where the
in-band addressing is optional (address 0 is assumed) and the Link Layer device does not
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
372
PMC [ PMC-SIERRA, INC ]
