參數(shù)資料
型號(hào): KSZ8895MQ-EVAL
廠商: Micrel Inc
文件頁(yè)數(shù): 35/119頁(yè)
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR KSZ8895MQ
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,以太網(wǎng)控制器(PHY 和 MAC)
嵌入式:
已用 IC / 零件: KSZ8895MQ
已供物品:
相關(guān)產(chǎn)品: 576-3753-ND - IC ETHERNET SW 5PORT 128-PQFP
其它名稱: 576-3871
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Micrel, Inc.
KSZ8895MQ/RQ/FMQ
Pin Description (Continued)
Pin Number
Pin Name
Type
(1)
Port
Pin Function
(2)
113
PS1
IPD
Serial bus configuration pin.
For this case, if the EEPROM is not present, the
KSZ8895MQ/RQ/FMQ will start itself with the PS[1.0] = 00 default
register values.
Pin Configuration
Serial Bus Configuration
PS[1.0] = 00
I
2C Master Mode for EEPROM
PS[1.0] = 01
SMI Interface Mode
PS[1.0] = 10
SPI Slave Mode for CPU Interface
PS[1.0] = 11
Factory Test Mode (BIST)
114
PS0
IPD
Serial bus configuration pin. See “Pin 113.”
115
RST_N
IPU
Reset the KSZ8895MQ/RQ/FMQ device. Active low.
116
GNDD
GND
Digital ground.
117
VDDC
P
1.2V digital core VDD.
118
TESTEN
IPD
NC for normal operation. Factory test pin.
119
SCANEN
IPD
NC for normal operation. Factory test pin.
120
NC
No connect.
121
X1
I
25MHz crystal clock connection/or 3.3V Oscillator input.
Crystal/Oscillator should be ±50ppm tolerance.
122
X2
O
25MHz crystal clock connection.
123
NC
No connect.
124
NC
No connect.
125
LDO_O
P
When pin126 is pull-up, the Internal 1.2V LDO controller is
enabled and creates a 1.2V output when using an external FET.
When pin126 is pull-down, the pin 125 is tristated.
Note: Use a 200
Ω (approximately) resistor between the source
and drain pins on the FET if 3.3V power rail exhibits a slow ramp
(>5ms) when using this internal 1.2V LDO controller. You can also
use an external 1.2V LDO when 3.3V power ramp time is slow.
126
IN_PWR_SEL
I
Pull-up to enable LDO_O of pin 125. Pull-down to disable LDO_0.
Note: A 4.3K pull-up and a 1K pull-down resistor divider is
recommended if using the internal 1.2V LDO controller plus an
external MOSFET for 1.2V power.
127
GNDA
GND
Analog ground.
128
TEST2
NC
NC for normal operation. Factory test pin.
Notes:
1.
P = Power supply.
I = Input.
O = Output.
I/O = Bidirectional.
GND = Ground.
IPU = Input w/internal pull-up.
IPD = Input w/internal pull-down.
IPD/O = Input w/internal pull-down during reset, output
pin otherwise.
IPU/O = Input w/internal pull-up during reset, output pin
otherwise.
NC = No connect.
2.
PU = Strap pin pull-up.
PD = Strap pull-down.
OTRI = Output tristated.
March 12, 2014
22
Revision 1.7
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