参数资料
型号: IDT82V2044EPF
厂商: IDT, Integrated Device Technology Inc
文件页数: 48/73页
文件大小: 0K
描述: IC LIU T1/E1 QUAD SHORT 128-TQFP
标准包装: 15
类型: 线路接口装置(LIU)
规程: E1
电源电压: 3.13 V ~ 3.47 V
安装类型: 表面贴装
封装/外壳: 128-LQFP
供应商设备封装: 128-TQFP(14x20)
包装: 托盘
其它名称: 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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