tc5299j ETC-unknow, tc5299j Datasheet - Page 19

• Manufacturer Part Number: tc5299j
• Description: Fast Ethernet Pcmcia Controller
• Manufacturer: ETC-unknow

Bit
Bit
D0
D1
D2
D3
D4
D5,D6
Bit
D0
5.7.2
5.7.3
Data Configure register (DCR)
Transmit configuration Register (TCR)
Symbol
Symbol
WTS
LS
FT0,FT1
Symbol
CRC
This Register is used to program the TC5299J for 8 or 16-bit memory interface, select byte ordering in
16-bit applications and establish FIFO thresholds. The DCR must be initialized prior to loading the
Remote Byte count Registers.
The transmit configuration establishes the actions of the transmitter section of the TC5299J during
transmission of a packet on the network, LB1 and LB0 power up as 0.
-
-
-
7
7
-
-
FT1
Description
Description
Word Transfer Select
0: Selects byte-wide DMA transfers.
1: Selects word-wide DMA transfers
Note:
Reserved
Reserved
Loopback Select
0: Loopback mode selected. Bits D1, D2 of the TCR must also be programmed for
1: Normal Operation.
Reserved
FIFO Threshold Select: Encoded: FIFO threshold. During reception, the FIFO
threshold indicates the number of bytes (or words) the FIFO has filled serially from
the network before the FIFO is emptied onto memory bus.
During transmission, the FIFO threshold indicates the number of bytes (of words)
the FIFO has filled from the Local DMA before being transferred to the memory.
Thus, the transmission threshold is 16 bytes less the receive threshold.
Description
Inhibit CRC
6
6
-
Loopback mode selected.
0
1
1
When word-wide mode is selected, up to 32k bytes are addressable; A0
remains low.
FT0
RECEIVE THRESHOLDS
FT1
0
0
1
1
5
5
-
FT0
1
0
1
0
1
0
1
OFST
4
4
-
12 Word
Word Wide
2 Word
4 Word
8 Word
-19-
ATD
LS
Register Page 1
Register Page 2
Register Page 3
3
3
0EH(Write)
0DH(Write)
Byte Wide
16 Bytes
24 Bytes
4 Bytes
8 Bytes
LB1
2
2
-
LB0
1
1
-
WTS
CRC
0
0
07/04/01
Ver. 0.1
TC5299J