参数资料
型号: SM320VC33HFGM150
厂商: TEXAS INSTRUMENTS INC
元件分类: 数字信号处理
英文描述: 32-BIT, 75 MHz, OTHER DSP, CQFP164
封装: NCTB, CERAMIC, MO-113AA, QFP-164
文件页数: 33/56页
文件大小: 669K
代理商: SM320VC33HFGM150
SM320VC33, SMJ320VC33
DIGITAL SIGNAL PROCESSOR
SGUS034E - FEBRUARY 2001 - REVISED OCTOBER 2002
39
POST OFFICE BOX 1443
HOUSTON, TEXAS 77251-1443
reset timing (continued)
EXTCLK
H1
H3
RESET
(see Notes A and C)
IACK
D[31:0]
PAGEx, A[23:0]
STRB
Asynchronous
Reset Signals
(see Note B)
R/W
Ten H1 Clock Cycles
tsu(RESET-EXTCLKL)
td(EXTCLKH-H1H)
td(EXTCLKH-H1L)
td(EXTCLKH-H3L)
tsu(RESETH-H1L)
tdis(H1H-DZ)
td(EXTCLKH-H3H)
td(H3H-CONTROLH)
tdis(H3H-AZ)
td(H1H-RWH)
td(H1H-IACKH)
tdis(RESETL-ASYNCH)
NOTES: A. Clock circuit is configured in C31-compatible divide-by-2 mode. If configured for x1 mode, EXTCLK directly drives H3.
B. Asynchronous reset signals include XF0/1, CLKX0, DX0, FSX0, CLKR0, DR0, FSR0, and TCLK0/1.
C. RESET is a synchronous input that can be asserted at any point during a clock cycle. If the specified timings are met, the exact
sequence shown occurs; otherwise, an additional delay of one clock cycle is possible.
D. In microprocessor mode, the reset vector is fetched twice, with seven software wait states each time. In microcomputer mode, the
reset vector is fetched twice, with no software wait states.
E. The address and PAGE3-PAGE0 outputs are placed in a high-impedance state during reset requiring a nominal 10-22 k
pullup.
If not, undesirable spurious reads can occur when these outputs are not driven.
Figure 27. RESET Timing
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