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参数资料
| 型号： | MSC8122TMP4800V |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 数字信号处理 |
| 英文描述： | 32-BIT, 300 MHz, OTHER DSP, PBGA431 |
| 封装： | FCBGA-431 |
| 文件页数： | 36/48页 |
| 文件大小： | 1158K |
| 代理商： | MSC8122TMP4800V |
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Hardware Design Considerations
MSC8122 Quad Digital Signal Processor Data Sheet, Rev. 16
Freescale Semiconductor
41
Figure 34. For optimal noise filtering, place the circuit as close as possible to VCCSYN. The 0.01-F capacitor should be closest
to VCCSYN, followed by the 10-F capacitor, the 10-nH inductor, and finally the 10-Ω resistor to VDD. These traces should be
kept short and direct. Provide an extremely low impedance path to the ground plane for GNDSYN. Bypass GNDSYN to VCCSYN
by a 0.01-F capacitor located as close as possible to the chip package. For best results, place this capacitor on the backside of
the PCB aligned with the depopulated void on the MSC8122 located in the square defined by positions, L11, L12, L13, M11,
M12, M13, N11, N12, and N13.
3.3
Connectivity Guidelines
Unused output pins can be disconnected, and unused input pins should be connected to the non-active value, via resistors to
VDDH or GND, except for the following:
If the DSI is unused (DDR[DSIDIS] is set), HCS and HBCS must pulled up and all the rest of the DSI signals can be
disconnected.
When the DSI uses synchronous mode, HTA must be pulled up. In asynchronous mode, HTA should be pulled either
up or down, depending on design requirements.
HDST
can be disconnected if the DSI is in big-endian mode, or if the DSI is in little-endian mode and the
DCR[DSRFA] bit is set.
When the DSI is in 64-bit data bus mode and DCR[BEM] is cleared, pull up HWBS[1–3]/HDBS[1–3]/HWBE[1–3]/
HDBE[1–3]
and HWBS[4–7]/HDBS[4–7]/HWBE[4–7]/HDBE[4–7]/PWE[4–7]/PSDDQM[4–7]/PBS[4–7].
When the DSI is in 32-bit data bus mode and DCR[BEM] is cleared, HWBS[1–3]/HDBS[1–3]/HWBE[1–3]/HDBE[1–3]
must be pulled up.
When the DSI is in asynchronous mode, HBRST and HCLKIN should either be disconnected or pulled up.
When the DSI uses sliding window address mode (DCR[SLDWA] = 1), the external HA[11–13] signals must be
connected (tied) to the correct voltage levels so that the host can perform the first access to the DCR. After reset, the
DSI expects full address mode (DCR[SLDWA] = 0). The DCR address in the DSI memory map is 0x1BE000, which
requires the following connections:
— HA11 must be pulled high (1)
— HA12 must be pulled high (1)
— HA13 must be pulled low (0)
The following signals must be pulled up: HRESET, SRESET, ARTRY, TA, TEA, PSDVAL, and AACK.
In single-master mode (BCR[EBM] = 0) with internal arbitration (PPC_ACR[EARB] = 0):
— BG, DBG, and TS can be left unconnected.
— EXT_BG[2–3], EXT_DBG[2–3], and GBL can be left unconnected if they are multiplexed to the system bus
functionality. For any other functionality, connect the signal lines based on the multiplexed functionality.
— BR must be pulled up.
— EXT_BR[2–3] must be pulled up if multiplexed to the system bus functionality.
If there is an external bus master (BCR[EBM] = 1):
— BR, BG, DBG, and TS must be pulled up.
— EXT_BR[2–3], EXT_BG[2–3], and EXT_DBG[2–3] must be pulled up if multiplexed to the system bus
functionality.
In single-master mode, ABB and DBB can be selected as IRQ inputs and be connected to the non-active value. In other
modes, they must be pulled up.
Figure 34. VCCSYN Bypass
VDD
0.01 F
10 F
VCCSYN
10
Ω
10nH
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相关代理商/技术参数 |
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|---|---|
| MSC8122TMP6400 | 功能描述:数字信号处理器和控制器 - DSP, DSC PBGA PB 1.2V 105C 400MHZ RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| MSC8122TMP6400V | 功能描述:DSP 16BIT 400MHZ MULTI 431FCPBGA RoHS:否 类别:集成电路 (IC) >> 嵌入式 - DSP（数字式信号处理器） 系列:StarCore 标准包装:2 系列:StarCore 类型:SC140 内核 接口:DSI，以太网，RS-232 时钟速率:400MHz 非易失内存:外部 芯片上RAM:1.436MB 电压 - 输入/输出:3.30V 电压 - 核心:1.20V 工作温度:-40°C ~ 105°C 安装类型:表面贴装 封装/外壳:431-BFBGA，FCBGA 供应商设备封装:431-FCPBGA（20x20） 包装:托盘 |
| MSC8122TVT4800V | 功能描述:IC DSP QUAD 16B 300MHZ 431FCPBGA RoHS:是 类别:集成电路 (IC) >> 嵌入式 - DSP（数字式信号处理器） 系列:StarCore 标准包装:2 系列:StarCore 类型:SC140 内核 接口:DSI，以太网，RS-232 时钟速率:400MHz 非易失内存:外部 芯片上RAM:1.436MB 电压 - 输入/输出:3.30V 电压 - 核心:1.20V 工作温度:-40°C ~ 105°C 安装类型:表面贴装 封装/外壳:431-BFBGA，FCBGA 供应商设备封装:431-FCPBGA（20x20） 包装:托盘 |
| MSC8122TVT6400 | 功能描述:DSP 16BIT 400MHZ MULTI 431FCPBGA RoHS:是 类别:集成电路 (IC) >> 嵌入式 - DSP（数字式信号处理器） 系列:StarCore 标准包装:2 系列:StarCore 类型:SC140 内核 接口:DSI，以太网，RS-232 时钟速率:400MHz 非易失内存:外部 芯片上RAM:1.436MB 电压 - 输入/输出:3.30V 电压 - 核心:1.20V 工作温度:-40°C ~ 105°C 安装类型:表面贴装 封装/外壳:431-BFBGA，FCBGA 供应商设备封装:431-FCPBGA（20x20） 包装:托盘 |
| MSC8122TVT6400V | 功能描述:IC DSP QUAD 16B 400MHZ 431FCPBGA RoHS:是 类别:集成电路 (IC) >> 嵌入式 - DSP（数字式信号处理器） 系列:StarCore 标准包装:2 系列:StarCore 类型:SC140 内核 接口:DSI，以太网，RS-232 时钟速率:400MHz 非易失内存:外部 芯片上RAM:1.436MB 电压 - 输入/输出:3.30V 电压 - 核心:1.20V 工作温度:-40°C ~ 105°C 安装类型:表面贴装 封装/外壳:431-BFBGA，FCBGA 供应商设备封装:431-FCPBGA（20x20） 包装:托盘 |
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