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參數資料
| 型號： | DJIXF972MQEA4 |
| 廠商： | Intel Corp. |
| 英文描述： | Single-Port 10/100 Mbps PHY Transceiver |
| 中文描述： | 單端口10/100 Mbps的物理層收發器 |
| 文件頁數： | 18/92頁 |
| 文件大小： | 666K |
| 代理商： | DJIXF972MQEA4 |
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Intel
LXT972M Single-Port 10/100 Mbps PHY Transceiver
18
Datasheet
Document Number: 302875-005
Revision Date: 27-Oct-2005
Table 8
lists signal descriptions of the LXT972M Transceiver configuration and LED driver pins.
Note:
Pull-up/pull-down resistors of 10k Ohms can be implemented if LEDs are not used in the design.
Table 8. Intel
LXT972M Transceiver Configuration and LED Driver Signal Descriptions
LQFP
Pin#
Symbol
Type
Signal Description
4
RESET_L
I
Reset
.
This active Low input is ORed with the control register Reset
bit (Register bit 0.15). The LXT972M Transceiver reset cycle
is extended to 258
μ
s (nominal) after reset is de-asserted.
12
RBIAS
AI
Reference Current Bias
.
This pin provides bias current for the internal circuitry. Must
be tied to ground through a 22.1 k
Ω
, 1% resistor.
2
3
REFCLK/XI
XO
AI and
AO
Reference Clock Input / Crystal Input and Crystal Output
.
A 25 MHz crystal oscillator circuit can be connected across XI
and XO. A clock can also be used at XI. Refer to
Section
5.3.2, “Clock Requirements” on page 28
in the Functional
Description section.
26
27
28
LED/CFG3
LED/CFG2
LEDCFG1
I/O
LED Drivers 1-3.
These pins drive LED indicators. Each LED can display one
of several available status conditions as selected by the LED
Configuration Register. (For details, see
Table 54, “LED
Configuration Register - Address 20, Hex 14” on page 87
.)
Configuration Inputs 1-3.
These pins also provide initial configuration settings. (For
details, see
Table 13, “Hardware Configuration Settings for
Intel LXT972M Transceiver” on page 33.)
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