参数资料
型号: TMP320C2811PGFA
厂商: Texas Instruments, Inc.
英文描述: TV 22C 22#22D SKT RECP R&D
中文描述: TMS320R2811,TMS320R2812数字信号处理器
文件页数: 125/147页
文件大小: 2021K
代理商: TMP320C2811PGFA
Electrical Specifications
125
June 2004
SPRS257
6.28
XHOLD/XHOLDA Timing
Table 6
36. XHOLD/XHOLDA Timing Requirements (XCLKOUT = XTIMCLK)
MIN
MAX
UNIT
t
d(HL-HiZ)
t
d(HL-HAL)
t
d(HH-HAH)
t
d(HH-BV)
When a low signal is detected on XHOLD, all pending XINTF accesses will be completed before the bus is placed in a high-impedance state.
The state of XHOLD is latched on the rising edge of XTIMCLK.
Delay time, XHOLD low to Hi-Z on all Address, Data, and Control
Delay time, XHOLD low to XHOLDA low
Delay time, XHOLD high to XHOLDA high
Delay time, XHOLD high to Bus valid
4t
c(XTIM)
5t
c(XTIM)
3t
c(XTIM)
4t
c(XTIM)
ns
ns
ns
ns
á
á
áá
áá
XCLKOUT
(/1 Mode)
XHOLD
XR/W,
XZCS0AND1,
XZCS2,
XZCS6AND7
XD[15:0]
Valid
XHOLDA
t
d(HL-Hiz)
t
d(HH-HAH)
High-Impedance
XA[18:0]
Valid
Valid
High-Impedance
t
d(HH-BV)
t
d(HL-HAL)
See Note A
See Note B
NOTES: A. All pending XINTF accesses are completed.
B. Normal XINTF operation resumes.
Figure 6
32. External Interface Hold Waveform
A
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