參數(shù)資料
型號(hào): SPAKD56366PV120
廠商: MOTOROLA INC
元件分類: 數(shù)字信號(hào)處理
英文描述: 24-BIT, 120 MHz, OTHER DSP, PQFP144
封裝: TQFP-144
文件頁數(shù): 137/147頁
文件大小: 2156K
代理商: SPAKD56366PV120
Signal/Connection Descriptions
Clock and PLL
MOTOROLA
DSP56366 Advance Information
1-5
CLOCK AND PLL
GNDQ (4)
Quiet Ground—GNDQ is an isolated ground for the internal processing logic. This connection must be
tied externally to all other chip ground connections. The user must provide adequate external decoupling
capacitors. There are four GNDQ connections.
GNDA (4)
Address Bus Ground—GNDA is an isolated ground for sections of the address bus 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 four GNDA connections.
GNDD (4)
Data Bus Ground—GNDD is an isolated ground for sections of the data bus 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 four GNDD connections.
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 1-4 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.
This input cannot tolerate 5 V.
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 cannot tolerate 5 V.
Table 1-3 Grounds
Ground Name
Description
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