參數(shù)資料
型號: MCIMX514AJM6C
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PBGA529
封裝: 19 X 19 MM, 0.8 MM PITCH, ROHS COMPLIANT, BGA-529
文件頁數(shù): 35/172頁
文件大小: 2218K
代理商: MCIMX514AJM6C
IOMUX Configuration for Boot Media
i.MX51A Automotive and Infotainment Applications Processors, Rev. 4
Freescale Semiconductor
13
3
IOMUX Configuration for Boot Media
The information provided in this section describes the contacts assigned for each type of bootable media.
It also includes data about the clocks used during boot flow and their frequencies. Signals that can be
multiplexed appear in tables throughout this section. See the IOMUXC chapter in the i.MX51 Multimedia
Applications Processor Reference Manual (MCIMX51RM) for details about how to program the IOMUX
controller.
VREF
When using VREF with DDR-2 I/O, the nominal 0.9 V reference voltage must be half of the
NVCC_EMI_DRAM supply. The user must tie VREF to a precision external resistor divider. Use a
1 k
Ω 0.5% resistor to GND and a 1 kΩ 0.5% resistor to NVCC_EMI_DRAM. Shunt each resistor
with a closely-mounted 0.1 F capacitor.
To reduce supply current, a pair of 1.5 k
Ω 0.1% resistors can be used. Using resistors with
recommended tolerances ensures the ± 2% VREF tolerance (per the DDR-2 specification) is
maintained when four DDR-2 ICs plus the i.MX51 are drawing current on the resistor divider.
Note: When VREF is used with mDDR this signal must be tied to GND.
VREFOUT
This signal determines the Triple Video DAC (TVDAC) reference voltage. The user must tie
VREFOUT to an external 1.05 k
Ω 1% resistor to GND.
VREG
This regulator is no longer used and should be floated by the user.
XTAL/EXTAL
The user should tie a fundamental-mode crystal across XTAL and EXTAL. The crystal must be
rated for a maximum drive level of 100
μW or higher. An ESR (equivalent series resistance) of
80
Ω or less is recommended. Freescale BSP (Board Support Package) software requires 24 MHz
on EXTAL.
The crystal can be eliminated if an external 24 MHz oscillator is available. In this case, EXTAL must
be directly driven by the external oscillator and XTAL is floated. The EXTAL signal level must swing
from NVCC_OSC to GND. If the clock is used for USB, then there are strict jitter requirements:
< 50 ps peak-to-peak below 1.2 MHz and < 100 ps peak-to-peak above 1.2 MHz for the USB PHY.
The COSC_EN bit in the CCM (Clock Control Module) must be cleared to put the on-chip oscillator
circuit in bypass mode which allows EXTAL to be externally driven. COSC_EN is bit 12 in the CCR
register of the CCM.
Table 4. JTAG Controller Interface Summary
JTAG
I/O Type
On-chip Termination
JTAG_TCK
Input
100 k
Ω pull-down
JTAG_TMS
Input
47 k
Ω pull-up
JTAG_TDI
Input
47 k
Ω pull-up
JTAG_TDO
3-state output
Keeper
JTAG_TRSTB
Input
47 k
Ω pull-up
JTAG_DE_B
Input/open-drain output
47 k
Ω pull-up
JTAG_MOD
Input
100 k
Ω pull-down
Table 3. Special Signal Considerations (continued)
Signal Name
Remarks
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MCIMX514AJM6CR2 制造商:Freescale Semiconductor 功能描述:ELVIS 3.0 AUTO - Tape and Reel
MCIMX515CJM6C 功能描述:處理器 - 專門應(yīng)用 iMX515 App Processor RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432
MCIMX515CJM6CR2 功能描述:處理器 - 專門應(yīng)用 i.MX51 32bit 800 MHz RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432
MCIMX515DJM8C 功能描述:處理器 - 專門應(yīng)用 iMX515 App Processor Extended Temp RoHS:否 制造商:Freescale Semiconductor 類型:Multimedia Applications 核心:ARM Cortex A9 處理器系列:i.MX6 數(shù)據(jù)總線寬度:32 bit 最大時鐘頻率:1 GHz 指令/數(shù)據(jù)緩存: 數(shù)據(jù) RAM 大小:128 KB 數(shù)據(jù) ROM 大小: 工作電源電壓: 最大工作溫度:+ 95 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MAPBGA-432
MCIMX515DJM8C 制造商:Freescale Semiconductor 功能描述:; LEADED PROCESS COMPATIBLE:YES; PEAK RE