TMS320VC549_06 Datasheet, PDF (51/63 Pages) Texas Instruments – FIXED-POINT DIGITAL SIGNAL PROCESSOR

TMS320VC549
FIXEDĆPOINT DIGITAL SIGNAL PROCESSOR
serial-port transmit timing in TDM mode
SPRS078G − SEPTEMBER 1998 − REVISED OCTOBER 2004
switching characteristics over recommended operating conditions [H = 0.5t_c(CO)] (see Figure 28)
PARAMETER
549-80
549-100
549-120
UNIT
MIN
MAX
th(TCH-TDV)
th(TCH-TDV)
td(TCH-TFV)
Hold time, TDAT / TADD valid after TCLK rising edge, TCLK external
Hold time, TDAT/TADD valid after TCLK rising edge, TCLK internal
Delay time, TFRM valid after TCLK rising edge, TCLK ext†
Delay time, TFRM valid after TCLK rising edge, TCLK int†
1
1
H−3
H−3
ns
ns
3H+22
ns
3H+12
td(TC-TDV)
Delay time, TCLK to valid TDAT/TADD, TCLK ext
Delay time, TCLK to valid TDAT/TADD, TCLK int
25
ns
18
† _{TFRM timing and waveforms shown in Figure 28 are for internal TFRM. TFRM can also be configured as external. The TFRM external case is}
illustrated in the receive timing diagram in Figure 27.
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