參數(shù)資料
型號(hào)： LXT9781HC
英文描述： LAN TRANSCEIVER|OCTAL|QFP|208PIN|PLASTIC
中文描述： 網(wǎng)絡(luò)收發(fā)器|八路| QFP封裝| 208PIN |塑料
文件頁數(shù)： 23/68頁
文件大?。?/td> 1177K
代理商： LXT9781HC
Low-Power Octal PHY
—
LXT9784
Datasheet
23
V5, V6
TPIP0, TPIN0
MLT
Receive Differential Pair, Ports 0-7.
These pins receive the
serial bit-stream on an unshielded twisted pair (UTP) cable. The
differential pair is a two-level signal in 10BASE-T mode
(Manchester) or a three-level signal in 100BASE-TX mode (MLT-
3). These signals interface directly with an isolation transformer.
V8, V9
TPIP1, TPIN1
V12, V13
TPIP2, TPIN2
V15, V16
TPIP3, TPIN3
C16, C15
TPIP4, TPIN4
C13, C12
TPIP5, TPIN5
C9, C8
TPIP6, TPIN6
C6, C5
TPIP7, TPIN7
Table 4. MDIO Signal Descriptions
Ball ID
Signal Name
Type
1
Signal Description
C20
MDIO
I/O
Management Data Input/Output.
The MDIO signal is a bi-directional data
pin for the Management Data Interface. When this signal is not used, a pull-
up resistor is required.
B19
MDC
I
Management Data Clock.
The MDC signal functions as a clock reference
for the MDIO signal. MDC can operate at a maximum frequency of 3 MHz.
When this signal is not used, a pull-up resistor is required.
1. Refer to Table 1 on page 6 for Signal Type Definitions.
Table 5. LED Signal Descriptions
Ball ID
Signal Name
Type
1
Signal Description
U20
LED0_A
O
Link/Activity LED, Ports 0-7.
With a good link the output is Low. The
output blinks at a rate related to the utilization.
T20
LED1_A
R20
LED2_A
G19
LED3_A
F19
LED4_A
E19
LED5_A
D19
LED6_A
C19
LED7_A
1. O = Output. Refer to
Table 1
for additional Signal Type Definitions.
Table 3. Network Interface Signal Descriptions (Continued)
Ball ID
Signal Name
Type
1
Signal Description
1. Refer to
Table 1 on page 11
for Signal Type Definitions.
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