参数资料
型号: DS21FF42
厂商: Maxim Integrated Products
文件页数: 98/114页
文件大小: 0K
描述: IC FRAMER T1 4X4 16CH 300-BGA
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 40
控制器类型: T1 调帧器
接口: 并行/串行
电源电压: 2.97 V ~ 3.63 V
电流 - 电源: 300mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 300-BBGA
供应商设备封装: 300-PBGA(27x27)
包装: 管件
DS21FT42/DS21FF42
84 of 114
The JTAG feature is only available when the DS21Q42 feature set is selected (FMS = 0). The JTAG
feature is disabled when the DS21Q42 is configured for emulation of the DS21Q41B (FMS = 1). FMS is
tied to ground for the DS21FF42/DS21FT42.Details on Boundary Scan Architecture and the Test Access
Port can be found in IEEE 1149.1-1990, IEEE 1149.1a-1993, and IEEE 1149.1b-1994.
The Test Access Port has the necessary interface pins; JTRST*, JTCLK, JTMS, JTDI, and JTDO. See
the pin descriptions for details.
BOUNDARY SCAN ARCHITECTURE Figure 22-1
23.2 TAP CONTROLLER STATE MACHINE
This section covers the details on the operation of the Test Access Port (TAP) Controller State Machine.
Please see Figure 23.2 for details on each of the states described below.
Tap Controller
The TAP controller is a finite state machine that responds to the logic level at JTMS on the rising edge of
JTCLK.
Test-Logic-Reset
Upon power up of the DS21Q42, the TAP Controller will be in the Test-Logic-Reset state. The
Instruction register will contain the IDCODE instruction. All system logic of the DS21Q42 will operate
normally.
Run-Test-Idle
The Run-Test-Idle is used between scan operations or during specific tests. The Instruction register and
Test registers will remain idle.
Select-DR-Scan
+V
Boundary Scan
Register
Identification
Register
Bypass
Register
Instruction
Register
JTDI
JTMS
JTCLK
JTRST
JTDO
+V
Test Access Port
Controller
MUX
10K
Select
Output Enable
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DS21FF42+ 功能描述:网络控制器与处理器 IC 4x4 16/4x3 12 Chnl T1/T1 Framer RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21FF42N 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21FF42N+ 功能描述:网络控制器与处理器 IC 4x4 16/4x3 12 Chnl T1/T1 Framer RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21FF44 功能描述:网络控制器与处理器 IC 4x4 16/4x3 12 Chnl E1/E1 Framer RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21FF44N 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray