參數資料
型號: DSPB56367AG150
廠商: Freescale Semiconductor
文件頁數: 79/100頁
文件大小: 0K
描述: IC DSP 24BIT 150MHZ 144-LQFP
標準包裝: 60
系列: DSP56K/Symphony
類型: 音頻處理器
接口: 主機接口,I²C,SAI,SPI
時鐘速率: 150MHz
非易失內存: ROM(240 kB)
芯片上RAM: 69kB
電壓 - 輸入/輸出: 3.30V
電壓 - 核心: 1.80V
工作溫度: -40°C ~ 95°C
安裝類型: 表面貼裝
封裝/外殼: 144-LQFP
供應商設備封裝: 144-LQFP(20x20)
包裝: 托盤
Clock and PLL
DSP56367 Technical Data, Rev. 2.1
2-4
Freescale Semiconductor
2.4
Clock and PLL
2.5
External Memory Expansion Port (Port A)
When the DSP56367 enters a low-power standby mode (stop or wait), it releases bus mastership and
tri-states the relevant port A signals: A0–A17, D0–D23, AA0/RAS0–AA2/RAS2, RD, WR, BB, CAS.
2.6
External Address Bus
GNDC (2)
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 are two GNDC connections.
GNDH
Host Ground—GNDh is an isolated ground for the HD08 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 GNDH connection.
GNDS (2)
SHI, ESAI, ESAI_1, DAX and Timer Ground—GNDS is an isolated ground for the SHI, ESAI, ESAI_1, DAX
and Timer. This connection must be tied externally to all other chip ground connections. The user must
provide adequate external decoupling capacitors. There are two 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.
Table 2-5 External Address Bus Signals
Signal Name
Type
State During
Reset
Signal Description
A0–A17
Output
Tri-Stated
Address Bus—When the DSP is the bus master, A0–A17 are active-high outputs
that specify the address for external program and data memory accesses. Otherwise,
the signals are tri-stated. 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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