- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376965 > DS2172 Bit Error Rate Tester BERT PDF資料下載
參數(shù)資料
| 型號： | DS2172 |
| 英文描述： | Bit Error Rate Tester BERT |
| 中文描述： | 位誤碼率測試器(BERT) |
| 文件頁數(shù)： | 6/21頁 |
| 文件大小： | 213K |
| 代理商： | DS2172 |
DS2172
6 of 21
2.0 PARALLEL CONTROL INTERFACE
The DS2172 is controlled via a multiplexed bi-directional address/data bus by an external microcontroller
or microprocessor. The DS2172 can operate with either Intel or Motorola bus timing configurations. If
the BTS pin is tied low, Intel timing will be selected; if tied high, Motorola timing will be selected. All
Motorola bus signals are listed in parenthesis (). See the timing diagrams in the A.C. Electrical
Characteristics for more details. The multiplexed bus on the DS2172 saves pins because the address
information and data information share the same signal paths. The addresses are presented to the pins in
the first portion of the bus cycle and data will be transferred on the pins during second portion of the bus
cycle. Addresses must be valid prior to the falling edge of ALE(AS), at which time the DS2172 latches
the address from the AD0 to AD7 pins. Valid write data must be present and held stable during the later
portion of the DS or
WR
pulses. In a read cycle, the DS2172 outputs a byte of data during the latter
portion of the DS or
RD
pulses. The read cycle is terminated and the bus returns to a high impedance
state as
RD
transitions high in Intel timing or as DS transitions low in Motorola timing. The DS2172 can
also be easily connected to non-multiplexed buses. RCLK and TCLK are used to update counters and
load transmit and receive pattern registers. At slow clock rates, sufficient time must be allowed for these
port operations.
3.0 PATTERN SET REGISTERS
The Pattern Set Registers (PSR) are loaded each time a new pattern (whether it be pseudorandom or
repetitive) is to be generated. When a pseudorandom pattern is generated, all four PSRs must be loaded
with FF Hex. When a repetitive pattern is to be created, the four PSRs are loaded with the pattern that is
to be repeated. Please see Tables 4 and 5 for some programming examples.
PATTERN SET REGISTERS
(MSB) (LSB)
PS31
PS30
PS29
PS28
PS23
PS22
PS21
PS20
PS15
PS14
PS13
PS12
PS7
PS6
PS5
PS4
PS27
PS19
PS11
PS3
PS26
PS18
PS10
PS2
PS25
PS17
PS9
PS1
PS24
PS16
PS8
PS0
PSR3 (addr.=00 Hex)
PSR2 (addr.=01 Hex)
PSR1 (addr.=02 Hex)
PSR0 (addr.=03 Hex)
4.0 PATTERN LENGTH REGISTER
Length Bits LB4 to LB0 determine the length of the pseudorandom polynomial or programmable
repetitive pattern that is generated and detected. With the pseudorandom patterns, the “Tap A” feedback
position of the pattern generator is always equal to the value in the Pattern Length Register (PLR). Please
refer to Figure 2 for a block diagram of the pattern generator and to Tables 4 and 5 for some
programming examples.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2174DK | Enhanced Bit Error-Rate Tester Design Kit |
| DS2175S | PCM， Other/Special/Miscellaneous |
| DS2175SN | PCM， Other/Special/Miscellaneous |
| DS2176IND | Telecommunication IC |
| DS2176Q | PCM Receiver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2172T | 功能描述:電信集成電路 Bit Error Rate Tester (BERT) RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| DS2172T/T&R | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC TESTER BIT ERROR RATE 32-TQFP 制造商:Maxim Integrated Products 功能描述:Telecom ICs Bit Error Rate Tester (BERT) |
| DS2172T/T&R+ | 制造商:Maxim Integrated Products 功能描述:BERT 32P TQFP T&R LEAD FREE - Tape and Reel |
| DS2172T/T&R | 功能描述:電信集成電路 Bit Error Rate Tester (BERT) RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
| DS2172T+ | 功能描述:電信集成電路 Bit Error Rate Tester (BERT) RoHS:否 制造商:STMicroelectronics 類型:Telecom IC - Various 工作電源電壓:4.75 V to 5.25 V 電源電流: 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFP-100 封裝:Tray |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。