PMC-Sierra, Inc.
PRELIMINARY
PM5381 S/UNI-2488
DATASHEET
PMC-2000489
ISSUE 1
SATURN USER NETWORK INTERFACE FOR 2488 MBIT/S
Register 0753H: TCFP Diagnostics
Bit
Type
Function
Default
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
DCRC[7]
DCRC[6]
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
DCRC[5]
DCRC[4]
DCRC[3]
DCRC[2]
DCRC[1]
Bit 8
DCRC[0]
Bit 7
Reserved
Reserved
TX_BYTE_MODE
XOFF
Bit 6
Bit 5
Bit 4
Bit 3
INVERT
Bit 2
Reserved
Reserved
Reserved
Bit 1
Bit 0
Reserved:
The Reserved bits should be set to their default values for proper operation.
INVERT:
The data inversion bit (INVERT) configures the ATM or packet processor to logically invert the
outgoing data stream. When INVERT is set to logic 1, the outgoing data stream is logically
inverted. The outgoing data stream is not inverted when INVERT is set to logic 0.
XOFF:
The XOFF serves as a transmission enable bit. When XOFF is set to logic 0, ATM cells or
packets are transmitted normally. When XOFF is set to logic 1, the cell or packet currently
being transmitted is completed and then transmission is suspended. When XOFF is set to
logic 1, the TCFP will not request data from the FIFO. ATM Idle cells or HDLC flags will be
sent on the TCFP egress interface.
TX_BYTE_MODE:
The transmit byte counter mode (TX_BYTE_MODE) bit is used to select the mode in which
the TX_BYTE[39:0] counters work. When TX_BYTE_MODE is logic 0, TX_BYTE[39:0] will
count all bytes in transmitted packets (including FCS and Abort bytes) before the byte stuffing
operation. When TX_BYTE_MODE is logic 1, TX_BYTE[39:0] will count all bytes in
Proprietary and Confidentail to PMC-Sierra Inc., and for its Customer’s Internal Use
331
PMC [ PMC-SIERRA, INC ]
