TLK100_11 Datasheet, PDF (57/88 Pages) Texas Instruments – Industrial Temp, Single Port 10/100 Mb/s Ethernet Physical Layer Transceiver

TLK100
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SLLS931B – AUGUST 2009 – REVISED DECEMBER 2009
8.4.6 Receiver Error Counter Register (RECR)
This counter keeps count of the number of receive errors.
Table 8-19. Receiver Error Counter Register (RECR), address 0x0015
BIT
BIT NAME
15:0 RX Error Count
DEFAULT
DESCRIPTION
0, RO, SC Receive errors counter (saturates in max value, clears on dummy write)
8.4.7 BIST Control Register (BISCR)
This register is used for configuring the PRBS BIST and to select the loopback point in the signal chain.
Table 8-20. BIST Control Register (BISCR), address 0x0016
BIT NAME
DEFAULT
DESCRIPTION
15 PRBS Count Mode
0, RW
1 = Continuous mode, when on of the PRBS counters reaches max value, pulse is
generated and counter starts counting from zero again
0 = Single mode, When one of the PRBS counters reaches it's max value, PRBS
checker stops counting.
14 Generate PRBS Packets
0, RW
1 = When packet generator is enabled, generate continuous packets with PRBS data.
When packet generator is disabled, PRBS checker is still enabled.
0 = When packet generator is enabled, generate single packet with constant data.
PRBS gen/check is disabled.
13 Packet Generation 64 bit
mode
0, RW
1 = Transmit 64 byte packets in packet generation mode
0 = Transmit 1518 byte packets in packet generation mode
12 Packet Generation Enable 0, RW
1 = Enable packet/PRBS generator
0 = Disable packet/PRBS generator
11:5 Reserved
0, RO Ignore on read
4:0 Loopback Mode
0, RW Selects loop back mode:
Near-end Loopbacks
[00001] – MII Loopback
[00010] – PCS Loopback (In 100BaseTX only)
[00100] – Digital Loopback
[01000] – Analog Loopback (requires 100Ω termination)
Far-end Loopback:
[10000] – Reverse Loopback
8.4.8 BIST STATUS Register (BISSR)
This register gives the status of the PRBS test and the sleep mode of the core.
Table 8-21. BIST STATUS Register (BISSR), address 0x0017
BIT NAME
15:12 Reserved
11 PRBS Locked
10 PRBS Sync Loss
9 Packet Generator Busy
8 Core Power Mode
Status
7:0 Reserved
DEFAULT
0,RO
0,RO
0,RO,LH
0,RO
0,RO
0,RO
DESCRIPTION
Ignore on read
1 = PRBS checker is locked on received byte stream
0 = PRBS checker is not locked
1 = PRBS checker has lost sync
0 = PRBS checker has not lost sync
1 = Packet generator is in process
0 = Packet generator is not in process
1 = Core is in normal power mode
0 = Core is powered down or in sleep mode
Ignore on read
Copyright © 2009, Texas Instruments Incorporated
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