参数资料
型号: DSPB56364AF100
厂商: Freescale Semiconductor
文件页数: 127/148页
文件大小: 0K
描述: IC DSP 24BIT AUD 100MHZ 100-LQFP
标准包装: 90
系列: DSP56K/Symphony
类型: 音频处理器
接口: 主机接口,I²C,SAI,SPI
时钟速率: 100MHz
非易失内存: ROM(24 kB)
芯片上RAM: 11.25kB
电压 - 输入/输出: 3.30V
电压 - 核心: 3.30V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 100-LQFP
供应商设备封装: 100-LQFP(14x14)
包装: 托盘
Clock and PLL
DSP56364 Technical Data, Rev. 4.1
2-4
Freescale Semiconductor
2.4
Clock and PLL
2.5
External Memory Expansion Port (Port A)
When the DSP56364 enters a low-power standby mode (stop or wait), it tri-states the relevant port A
signals: D0–D7, AA0, AA1, RD, WR, CAS.
2.5.1
External Address Bus
GNDC (1)
Bus Control Ground—GNDC is an isolated ground for the bus control I/O drivers. This connection must
be tied externally to all other chip ground connections. The user must provide adequate external decoupling
capacitors. There is one GNDC connections.
GNDS (3)
SHI and ESAI —GNDS is an isolated ground for the SHI and ESAI. This connection must be tied externally
to all other chip ground connections. The user must provide adequate external decoupling capacitors.
There are three GNDS connections.
Table 2-4 Clock and PLL Signals
Signal Name
Type
State During
Reset
Signal Description
EXTAL
Input
External Clock Input—An external clock source must be connected to EXTAL in
order to supply the clock to the internal clock generator and PLL.
PCAP
Input
PLL Capacitor—PCAP is an input connecting an off-chip capacitor to the PLL filter.
Connect one capacitor terminal to PCAP and the other terminal to VCCP.
If the PLL is not used, PCAP may be tied to VCC, GND, or left floating.
PINIT/NMI
Input
PLL Initial/Nonmaskable Interrupt—During assertion of RESET, the value of
PINIT/NMI is written into the PLL Enable (PEN) bit of the PLL control register,
determining whether the PLL is enabled or disabled. After RESET de assertion and
during normal instruction processing, the PINIT/NMI Schmitt-trigger input is a
negative-edge-triggered nonmaskable interrupt (NMI) request internally
synchronized to internal system clock.
This input is 5 V tolerant.
Table 2-5 External Address Bus Signals
Signal Name
Type
State During
Reset
Signal Description
A0–A17
Output
Keeper active Address Bus—A0–A17 are active-high outputs that specify the address for
external program and data memory accesses. Otherwise, the signals are kept
to their previous values by internal weak keepers. To minimize power
dissipation, A0–A17 do not change state when external memory spaces are not
being accessed.
Table 2-3 Grounds (continued)
Ground Name
Description
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