參數(shù)資料
型號: IXF440
英文描述: LAN HUB CONTROLLER
中文描述: 局域網(wǎng)集線器控制器
文件頁數(shù): 15/100頁
文件大小: 1354K
代理商: IXF440
IXF440 Multiport 10/100 Mbps Ethernet Controller
Datasheet
15
MII / SYM Interface
Note:
The pins have various functions according to the port mode: MII or SYM. See a detailed
description in
Section 6
, Network Interface Operation.
I
Transmit clock.
O
MII mode:
Nibble transmit data.
SYM
mode:
O
MII mode:
Transmit enable signal.
SYM
mode:
I
Receive recovered clock.
I
MII mode:
Nibble receive data.
SYM
mode:
I
MII mode:
Receive enable signal.
SYM
mode:
I/O
MII mode:
Collision detection signal (input).
SYM
mode:
I
MII mode:
Carrier detection signal.
SYM
mode:
I
MII mode:
Receive error signal.
SYM
mode:
O
MII mode:
Transmit error signal.
SYM
mode:
O
MII management clock.
I/O
MII management input/output serial data.
tclk{i}
txd{i}[3:0]
Four low bits of the encoded transmit data.
ten{i}/txd{i}[4]
The fifth bit of the encoded transmit data.
rclk{i}
rxd{i}[3:0]
Four low bits of the encoded received data.
dv{i}/rxd{i}[4]
The fifth bit of the encoded received data.
col{i}/act{i}
Activity indication (output).
crs{i}/sd{i}
Signal detection indicating link status.
rerr{i}
Must be connected to 0.
terr{i}/lnk{i}
Link indication.
mdc
mdio
JTAG Interface
tck
tms
tdi
tdo
I
I
I
O
JTAG clock. If this pin is not used, it must be connected to 0.
JTAG test mode. If this pin is not used, it must be connected to 1.
JTAG data serial input. If this pin is not used, it must be connected to 1.
JTAG data serial output.
Table 2. Signal Descriptions (Continued)
Signal Name
I/O
Pin Description
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