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| 型號(hào)： | TMS320DM648ZUT9 |
| 廠商： | Texas Instruments |
| 文件頁(yè)數(shù)： | 174/190頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC DGTL MEDIA PROC 529-FCBGA |
| 標(biāo)準(zhǔn)包裝： | 84 |
| 系列： | TMS320DM64x, DaVinci™ |
| 類(lèi)型： | 定點(diǎn) |
| 接口： | 主機(jī)接口，I²C，McASP，PCI，SPI，UART |
| 時(shí)鐘速率： | 900MHz |
| 非易失內(nèi)存： | ROM（64 kB） |
| 芯片上RAM： | 576kB |
| 電壓 - 輸入/輸出： | 1.8V，3.3V |
| 電壓 - 核心： | 1.20V |
| 工作溫度： | 0°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 529-BFBGA，F(xiàn)CBGA |
| 供應(yīng)商設(shè)備封裝： | 529-FCBGA（19x19） |
| 包裝： | 托盤(pán) |
| 產(chǎn)品目錄頁(yè)面： | 715 (CN2011-ZH PDF) |
| 配用： | 296-23122-ND - PLATFORM DEV DGTL VIDEO DM648 |
| 其它名稱(chēng)： | 296-26858-5 TMS320DM648ZUT9-ND |
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SPRS372H – MAY 2007 – REVISED APRIL 2012
6.7
Reset Controller
The reset controller detects the different types of resets supported on the device and manages the
distribution of those resets throughout the device.
The device has several types of resets: power-on reset, warm reset, max reset and system reset. Table 6-
21 explains further the types of reset, the reset initiator, and the effects of each reset on the chip. See
Section 6.7.9 for more information on the effects of each reset on the PLL controllers and their clocks.
Table 6-21. Device-Level Reset Types
TYPE
INITIATOR
EFFECT(s)
Power-on Reset
POR pin
Resets the entire chip including the test and emulation logic
Resets everything except for the test and emulation logic and the
Warm Reset
RESET pin
Ethernet Subsystem
Max Reset
Emulator
Same as a warm reset
A system reset maintains memory contents and does not reset the
test and emulation circuit and the Ethernet Subsystem. The device
System Reset
PCI via the PRST pin
configuration pins are also not re-latched and system reset does not
affect the state of the peripherals (enable/disable).
In addition to device-level global resets, the PSC provides the capability to cause local resets to
peripherals and/or the CPU.
6.7.1
Power-on Reset (POR Pin)
Power-on reset (POR) is initiated by the POR pin and is used to reset the entire chip, including the test
and emulation logic. Power-on reset is also referred to as a cold reset since the device usually goes
through a power-up cycle. During power-up, the POR pin must be asserted (driven low) until the power
supplies have reached their normal operating conditions. Note that a device power-up cycle is not required
to initiate a power-on reset.
The following sequence must be followed during a power-on reset:
1. Wait for all power supplies to reach normal operating conditions while keeping the POR pin asserted
(driven low). While POR is asserted, all pins will be in high-impedance mode. After the POR pin is
deasserted (driven high), all Z-group pins, low-group pins, and high-group pins are set to their reset
state and will remain at their reset state until configured by their respective peripheral. The clock and
reset of each peripheral is determined by the default settings of the power and sleep controller (PSC).
2. Once all the power supplies are within valid operating conditions, the POR pin must remain asserted
(low) for a minimum number of 256 CLKIN2 cycles. The PLL1 controller input clock, CLKIN1, and the
PCI input clock, PCLK, must be valid during this time. PCLK is needed only if the PCI module is being
used. If the DDR2 memory controller and the Ethernet Subsystem are not needed, CLKIN2 can be tied
low and REFCLKP/REFCLKN can be connected to VSS and CVDD respectively. In this case, the POR
pin must remain asserted (low) for a minimum of 256 CLKIN1 cycles after all power supplies have
reached valid operating conditions. Within the low period of the POR pin, the following occurs:
(a) The reset signals flow to the entire chip (including the test and emulation logic), resetting modules
that use reset asynchronously.
(b) The PLL1 controller clocks are started at the frequency of the system reference clock. The clocks
are propagated throughout the chip to reset modules that use reset synchronously. By default,
PLL1 is in reset and unlocked.
(c) The PLL2 controller clocks are started at the frequency of the system reference clock. PLL2 is held
in reset. Since the PLL2 controller always operates in PLL mode, the system reference clock and
all the system clocks are invalid at this point.
(d) The RESETSTAT pin stays asserted (low), indicating the device is in reset.
3. The POR pin may now be deasserted (driven high). When the POR pin is deasserted, the
configuration pin values are latched, and the PLL controllers change their system clocks to their default
divide-down values. PLL2 is taken out of reset and automatically starts its locking sequence. Other
84
Peripheral Information and Electrical Specifications
Copyright 2007–2012, Texas Instruments Incorporated
Product Folder Link(s): TMS320DM647 TMS320DM648
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| TMS320DM648ZUTA6 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Digital Media Proc RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
| TMS320DM648ZUTA8 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Digital Media Proc RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
| TMS320DM648ZUTD1 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Digital Media Proc RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
| TMS320DM648ZUTD7 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Digital Media Proc RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
| TMS320DM648ZUTD9 | 功能描述:數(shù)字信號(hào)處理器和控制器 - DSP, DSC Digital Media Proc RoHS:否 制造商:Microchip Technology 核心:dsPIC 數(shù)據(jù)總線寬度:16 bit 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:2 KB 最大時(shí)鐘頻率:40 MHz 可編程輸入/輸出端數(shù)量:35 定時(shí)器數(shù)量:3 設(shè)備每秒兆指令數(shù):50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風(fēng)格:SMD/SMT |
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