TLK2208B Datasheet, PDF (26/40 Pages) Texas Instruments – 8-PORT GIGABIT ETHERNET TRANCSEIVER

TLK2208B
8ĆPORT GIGABIT ETHERNET TRANSCEIVER
SLLS578D − AUGUST 2003 − REVISED SEPTEMBER 2006
Table 6. Control Register (0x00) Bit Definitions
BIT(S)
0.15
DEFAULT
VALUE = 0x0140
0b
Reset
NAME
0.14 0b
0.13 0b
0.12 0b
0.11
0b
Loopback
Speed selection (LSB)
Auto-negotiation enable
Power down
0.10 0b
Isolate
0.9
0b
Restart auto-negotiation
0.8
1b
Duplex mode
0.7
0b
Collision test
0.6
1b
Speed selection (MSB)
0.5:0 00 0000b
Reserved
NOTE 2: Writing to this bit position is ignored.
DESCRIPTION
Logically ORed with the logic value of the RESET terminal. After
the reset bit is set to one, it automatically sets itself back to zero
on the next MDC clock cycle.
1 = Global resets including FIFO clear
0 = Normal operation (default)
Logically ORed with the logic value of the LPBK terminal
1 = Enable loopback mode on all channels
0 = Disable loopback mode on all channels (default)
Not applicable. Read returns a 0.
Not applicable. Read returns a 0.
Setting this bit high powers down the device, with the exception
that the MDIO interface stays active.
1 = Power-down mode is enabled
0 = Normal operation (default)
Not applicable. Read returns a 0.
Not applicable. Read returns a 0.
Only full duplex is supported, Write is ignored, read returns a 1.
Not applicable. Read returns a 0.
Not applicable. Read returns a 1.
Read returns 0s, write is ignored.
READ/WRITE
Read/write,
self-clearing
Read/write
Read-only,
See Note 2
Read-only,
See Note 2
Read/write
Read-only,
See Note 2
Read-only,
See Note 2
Read-only,
See Note 2
Read-only,
See Note 2
Read-only,
See Note 2
Read-only,
See Note 2
Table 7. Status Register (0x01) Bit Definitions
BIT(S)
1.15:9
1.8
DEFAULT
VALUE = 0x0101
0000 000b
1b
NAME
Extended status
1.7
0b
1.6:3 0b
1.2
0b
1.1
0b
1.0
1b
Reserved
Various configurations
Link status
Jabber detect
Extended capability
DESCRIPTION
Read returns a 0.
Read returns a 1, indicating extended status information is held
in register 0x0F.
Read returns a 0.
Read returns a 0.
Read returns a 0.
Read returns a 0.
Read returns a 1, indicating extended register capability.
READ/WRITE
Read-only
Read-only
Read-only
Read-only
Read-only
Read-only
Read-only
The identifier code is composed of bits 3−24 of the 25-bit organizationally unique identifier (OUI) assigned to
Texas Instruments by the IEEE. The 6-bit manufacturer model number is unique to the TLK2208B. The
manufacturer revision number denotes the current revision of the TLK2208B. See Table 8 and Table 9.
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