參數(shù)資料
型號: 78Q8430-100IGTR/F
廠商: Maxim Integrated Products
文件頁數(shù): 4/88頁
文件大小: 0K
描述: IC LAN MEDIA ACCESS CTLR 100LQFP
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 1,000
控制器類型: 以太網(wǎng)控制器,MAC/PHY
電源電壓: 3.3V
電流 - 電源: 230mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 100-LQFP
供應商設備封裝: 100-LQFP(14x14)
包裝: 帶卷 (TR)
78Q8430 Data Sheet
DS_8430_001
12
Rev. 1.2
3
Pin Description
3.1
Pin Legend
Table 1 lists the different pin types found on the 78Q8430 device. The Type field of the pin description
tables refers to one of these types.
Table 1: Pin Legend
Type
Description
A
Analog
IU
TTL-level Input, with Pull-up
IS
TTL-level Input, with Schmitt Trigger
O
TTL-level Output
OD
TTL-level Output (Open Drain)
S
Supply
I
TTL-level Input
ID
TTL-level Input, with Pull-down
B
TTL-level Bidirectional Pin
OZ
TTL-level Output (Tristate)
G
Ground
3.2
Pin Descriptions
The pin descriptions in the following tables are grouped by interface. A pin number, type specification per
Table 2 and a functional description is provided for each pin on the 78Q8430 device.
3.2.1
Clock Pins
Table 2: Clock Pin Descriptions
Signal
Pin Number
Type
Description
XTLP
87
A
Crystal Positive/Negative
To use the internal oscillator, connect a 25 MHz crystal across
XTLP and XTLN. To use of an external clock, XTLN is grounded
and XTLP is driven with a 25 MHz clock.
Provides timing reference for all media dependant interface
operations. An internal PLL is used to multiply this clock by four
for use as the main system clock in internal clock mode.
XTLN
88
BUSCLK
15
I
Peripheral Clock
The source for the main system clock in external clock mode. In
synchronous bus mode, all host bus signals are assumed to be
synchronous to this clock.
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