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参数资料
| 型号： | DAC1208D750HN |
| 厂商： | NXP Semiconductors N.V. |
| 元件分类： | 外设及接口 |
| 英文描述： | Dual 12-bit DAC; up to 750 Msps; 2×, 4× or 8× interpolating |
| 封装： | DAC1208D750HN/C1<SOT804-3|<<<1<Always Pb-free,;DAC1208D750HN/C1<SOT804-3|<<<1<Always Pb-free,; |
| 文件页数： | 14/98页 |
| 文件大小： | 554K |
| 代理商： | DAC1208D750HN |
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DAC1208D750
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 6 December 2010
14 of 98
NXP Semiconductors
DAC1208D750
2
×
, 4
×
or 8
×
interpolating DAC with JESD204A
The lane processing makes use of the sync patterns to synchronize the data stream,
determine the initial running disparity and extract the 10-bit word from the incoming
data stream (word-alignment).
The SYNC_OUT signal is also used during normal operation by the DAC1208D750 to
request a link reinitialization. This occurs when the 10b/8b module loses synchronization.
The SYNC_OUT signal conforms to LVDS signaling. Its common-mode voltage and its
single-ended peak amplitude can be programmed using SET_SYNC_LEVEL bits in the
SET_SYNC registers (see
Table 77 on page 55
).
SYNC_OUT is asynchronous with the frame clock. There is no timing specification with
respect to the CLKINP and CLKINN inputs.
10.2.3
Comma detection and word align
This stage monitors the data stream for code characters (comma detection), decodes the
words to bytes (octets) and performs optional character replacement as part of frame/lane
alignment monitoring and correction. This module provides the required control signals to
the RX controller and ILA.
This module decodes the 10-bit words into 8-bit words (octets). The decoding table is
specified in the IEEE 802.3-2005 specification. During decoding, the disparity is
calculated according to the disparity rules mentioned in the same specification
IEEE 802.3-2005. When the disparity counter is more than +2 or less than
2, an error will
be generated.
The following comma symbols are detected during data transmission irrespective of the
running disparity:
/K/ = K28.5
/F/ = K28.7
/A/ = K28.3
/R/ = K28.0
/Q/ = K28.4
A flag is sent to the control interface to reflect detected commas in registers.
The following flags are also triggered according to the following definitions:
VALID: a code group that is found in the column of the 10b/8b decoding tables
according to the current running disparity.
DISPARITY ERROR: The received code group exists in the 10b/8b decoding table,
but is not found in the proper column according to the current running disparity.
NOT-IN-TABLE (NIT) ERROR: The received code group is not found in the 10b/8b
decoding table for either disparity.
INVALID: a code group that either shows a disparity error or that does not exist in the
10b/8b decoding table.
DAC1208D750 supports character replacement whatever the state of the descrambler.
When scrambling is not active, the received K28.3 /A/ or K28.7 /F/ will be replaced by the
previous sample. When scrambling is active, the corresponding data octet D28.3 (0xC) or
D28.7 (0xFC) will be used.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DAC1208D750HN/C1,5 | 功能描述:数模转换器- DAC DL 12BIT DAC 750MSPS 2X 4X OR 8X INT RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| DAC1208D750HN-C1 | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| DAC1208D750HN-C18 | 功能描述:数模转换器- DAC RoHS:否 制造商:Texas Instruments 转换器数量:1 DAC 输出端数量:1 转换速率:2 MSPs 分辨率:16 bit 接口类型:QSPI, SPI, Serial (3-Wire, Microwire) 稳定时间:1 us 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-14 封装:Tube |
| DAC1208LCD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:12-Bit Digital-to-Analog Converter |
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