参数资料
型号: DS26324DK
厂商: Maxim Integrated Products
文件页数: 51/120页
文件大小: 0K
描述: KIT DESIGN FOR G549DS26324
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1
主要目的: 电信,线路接口单元(LIU)
已用 IC / 零件: G549DS26324
已供物品: 板,线缆,电源
DS26324 3.3V, 16-Channel, E1/T1/J1 Short-Haul Line Interface Unit
36 of 120
5.9.3
Receive Pattern Detection
The Receive BERT receives only the payload data and synchronizes the receive pattern generator to the incoming
pattern. The receive pattern generator is a 32-bit shift register that shifts data from the least significant bit (LSB) or
bit 1 to the most significant bit (MSB) or bit 32. The input to bit 1 is the feedback. For a PRBS pattern (generating
polynomial x
n + xy + 1), the feedback is an XOR of bit n and bit y. For a repetitive pattern (length n), the feedback is
bit n. The values for n and y are individually programmable (1 to 32). The output of the receive pattern generator is
the feedback. If QRSS is enabled, the feedback is an XOR of bits 17 and 20, and the output will be forced to one if
the next 14 bits are all zeros. QRSS is programmable (on or off). For PRBS and QRSS patterns, the feedback will
be forced to one if bits 1 through 31 are all zeros. Depending on the type of pattern programmed, pattern detection
performs either PRBS synchronization or repetitive pattern synchronization.
5.9.3.1
Receive PRBS Synchronization
PRBS synchronization synchronizes the receive pattern generator to the incoming PRBS or QRSS pattern. The
receive pattern generator is synchronized by loading 32 data stream bits into the receive pattern generator, and
then checking the next 32 data stream bits. Synchronization is achieved if all 32 bits match the incoming pattern. If
at least six incoming bits in the current 64-bit window do not match the receive pattern generator, automatic pattern
re-synchronization is initiated. Automatic pattern re-synchronization can be disabled.
See Figure 5-13 for the PRBS synchronization diagram.
Figure 5-13. PRBS Synchronization State Diagram
Sync
Load
Verify
1 bit error
32 bits loaded
32
bi
ts
w
it
hout
e
rr
or
s
6 of
64
bi
ts
w
ith
e
rror
s
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参数描述
DS26324G 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray
DS26324G+ 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray
DS26324GA2 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray
DS26324GA2+ 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray
DS26324GA2+W 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray