參數(shù)資料
型號: TMX320C6201
廠商: Texas Instruments, Inc.
元件分類: 數(shù)字信號處理
英文描述: Digital Signal Processors(1600MIPS at 200MHz,8個功能單元并行操作的DSP)
中文描述: 數(shù)字信號處理器(1600MIPS在200MHz,8個功能單元并行操作的數(shù)字信號處理器)
文件頁數(shù): 65/72頁
文件大?。?/td> 1552K
代理商: TMX320C6201
TMX320C6201
DIGITAL SIGNAL PROCESSOR
SPRS051B – JANUARY 1997 – REVISED JUNE 1997
65
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251–1443
hold/hold-acknowledge timing
HOLD/HOLDA cycles are used by the host to disconnect the ’320C6201 DSP from the system electrically so
the host processor can access system resources directly. As shown on Figure 42, HOLD/HOLDA cycles put
all output signals on the EMIF in the high-impedance mode (except HOLDA). To request the bus, the host
processor drives the HOLD signal low. When the ’320C6201 is ready, it responds by putting the EMIF bus in
the high-impedance mode and asserting the HOLDA signal to announce to the host that the bus is no longer
driven. The host has permission to use the EMIF bus as long as both HOLD and HOLDA control signals are
low. Once the HOLD signal is de-asserted, the DSP responds by bringing the HOLDA signal high, at which point
it resumes driving the EMIF outputs. Note that the HOLD/HOLDA logic is not affected by the state of the RESET
signal.
timing requirements for the hold/hold-acknowledge cycle
NO
MIN
MAX
UNIT
1
tsu(CKH-HOLD)
Setup time, HOLD valid before CLKOUT1 high
1.5
ns
P
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