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參數(shù)資料
| 型號： | DS2172T |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Telecom IC:Other |
| 英文描述： | SPECIALTY TELECOM CIRCUIT, PQFP32 |
| 封裝： | TQFP-32 |
| 文件頁數(shù)： | 3/22頁 |
| 文件大?。?/td> | 174K |
| 代理商： | DS2172T |
DS2172
11 of 22
NOTES FOR TABLES 4 AND 5:
1. PTR = Polynomial Tap Register (address = 05)
2. PLR = Pattern Length Register (address = 04)
3. PSR3 = Pattern Set Register 3 (address = 00)
4. PSR2 = Pattern Set Register 2 (address = 01)
5. PSR1 = Pattern Set Register 1 (address = 02)
6. PSR0 = Pattern Set Register 0 (address = 03)
7. TINV = Transmit Data Inversion Select Bit (EIR.5)
8. RINV = Receive Data Inversion Select Bit (EIR.4)
9. For the 2
32 -1 pattern, the random pattern actually repeats every (4093 x 220) + 1046529 bits instead of
2
32 - 1.
8.0 BIT COUNT REGISTERS
The Bit Count Registers (BCR3 to BCR0) comprise a 32-bit count of bits (actually RCLK cycles)
received at RDATA. BC31 is the MSB of the 32-bit count. The bit counter increments for each cycle of
RCLK when input pin RDIS is low. The bit counter is disabled during loss of SYNC. The Status Register
bit BCOF is set when this 32-bit register overflows. Upon an overflow condition, the user must clear the
BCR by either toggling the LC bit or pin. The DS2172 latches the bit count into the BCR registers and
clears the internal bit count when either the PCR.4 bit or the LC input pin toggles from low to high. The
bit count and bit error count (available via the BECRs) are used by an external processor to compute the
BER performance on a loop or channel basis.
BIT COUNT REGISTERS
(MSB)
(LSB)
BC31
BC30
BC29
BC28
BC27
BC26
BC25
BC24
BCR3 (addr.=08 Hex)
BC23
BC22
BC21
BC20
BC19
BC18
BC17
BC16
BCR2 (addr.=09 Hex)
BC15
BC14
BC13
BC12
BC11
BC10
BC9
BC8
BCR1 (addr.=0A Hex)
BC7
BC6
BC5
BC4
BC3
BC2
BC1
BC0
BCR0 (addr.=0B Hex)
9.0 BIT ERROR COUNT REGISTERS
The Bit Error Count Registers (BECR3 to BECR0) comprise a 32-bit count of bits received in error at
RDATA. The bit error counter is disabled during loss of SYNC. BEC31 is the MSB of the 32-bit count.
The Status Register bit BECOF is set when this 32-bit register overflows. Upon an overflow condition,
the user must clear the BECR by either toggling the LC bit or pin. The DS2172 latches the bit error count
into the BECR registers and clears the internal bit error count when either the PCR.4 bit or the LC input
pin toggles from low to high. The bit count (available via the BCRs) and bit error count are used by an
external processor to compute the BER performance on a loop or channel basis.
BIT ERROR COUNT REGISTERS
(MSB)
(LSB)
BEC31
BEC30
BEC29
BEC28
BEC27
BEC26
BEC25
BEC24
BECR3 (addr.=0C Hex)
BEC23
BEC22
BEC21
BEC20
BEC19
BEC18
BEC17
BEC16
BECR2 (addr.=0D Hex)
BEC15
BEC14
BEC13
BEC12
BEC11
BEC10
BEC9
BEC8
BECR1 (addr.=0E Hex)
BEC7
BEC6
BEC5
BEC4
BEC3
BEC2
BEC1
BEC0
BECR0 (addr.=0F Hex)
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PDF描述 |
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| DS2172TN | SPECIALTY TELECOM CIRCUIT, PQFP32 |
| DS2172 | SPECIALTY TELECOM CIRCUIT, PQFP32 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 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 |
| DS2172T+T&R | 制造商:Maxim Integrated Products 功能描述:BIT ERROR RATE TESTER 32TQFP - Tape and Reel 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) |
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