參數(shù)資料
型號: IDT82V2044EPF
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 48/73頁
文件大?。?/td> 0K
描述: IC LIU T1/E1 QUAD SHORT 128-TQFP
標(biāo)準(zhǔn)包裝: 15
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: 128-LQFP
供應(yīng)商設(shè)備封裝: 128-TQFP(14x20)
包裝: 托盤
其它名稱: 82V2044EPF
52
INDUSTRIAL
TEMPERATURE RANGES
QUAD CHANNEL T1/E1/J1 SHORT HAUL LINE INTERFACE UNIT
5
IEEE STD 1149.1 JTAG TEST
ACCESS PORT
The IDT82V2044E supports the digital Boundary Scan Specification as
described in the IEEE 1149.1 standards.
The boundary scan architecture consists of data and instruction regis-
ters plus a Test Access Port (TAP) controller. Control of the TAP is per-
formed through signals applied to the Test Mode Select (TMS) and Test
Clock (TCK) pins. Data is shifted into the registers via the Test Data Input
(TDI) pin, and shifted out of the registers via the Test Data Output (TDO)
pin. Both TDI and TDO are clocked at a rate determined by TCK.
The JTAG boundary scan registers include BSR (Boundary Scan Reg-
ister), IDR (Device Identification Register), BR (Bypass Register) and IR
(Instruction Register). These will be described in the following pages. Refer
to for architecture.
Figure-21 JTAG Architecture
BSR (Boundary Scan Register)
IDR (Device Identification Register)
BR (Bypass Register)
IR (Instruction Register)
MUX
TDO
TDI
TCK
TMS
TRST
Control<6:0>
MUX
Select
High Impedance Enable
TAP
(Test Access Port)
Controller
parallel latched output
Digital output pins
Digital input pins
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