參數(shù)資料
型號: IDT82V2042EPF8
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 36/83頁
文件大?。?/td> 0K
描述: IC LIU T1/J1/E1 2CH SHORT 80TQFP
標(biāo)準(zhǔn)包裝: 750
類型: 線路接口裝置(LIU)
規(guī)程: E1
電源電壓: 3.13 V ~ 3.47 V
安裝類型: 表面貼裝
封裝/外殼: 80-LQFP
供應(yīng)商設(shè)備封裝: 80-TQFP(14x14)
包裝: 帶卷 (TR)
其它名稱: 82V2042EPF8
IDT82V2042E
DUAL CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT
FUNCTIONAL DESCRIPTION
41
December 12, 2005
3.14 5V TOLERANT I/O PINS
All digital input pins will tolerate 5.0 ± 10% volts and are compatible with
TTL logic.
3.15 RESET OPERATION
The chip can be reset in two ways:
Software Reset: Writing to the RST register (01H) will reset the chip
in 1 s.
Hardware Reset: Asserting the RST pin low for a minimum of 100 ns
will reset the chip.
DuringHardwareReset,thedevicerequiresanactiveclockonMCLK.
ForT1/J1operation,bitT1E1(GCF0)is setafterreset.Before access-
ing any other regisers a delay of 50 us is required to allow the internal
clocking to be settled.
After reset, all drivers output are in high impedance state, all the internal
flip-flops are reset, and all the registers are initialized to default values.
When performing a software reset, the T1E1 bit (GCF0) will not be reset
and stay with the set value.
3.16 POWER SUPPLY
This chip uses a single 3.3 V power supply.
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