dsp56362 Freescale Semiconductor, Inc, dsp56362 Datasheet - Page 90

• Manufacturer Part Number: dsp56362
• Description: Dsp56362 24-bit Audio Digital Signal Processor
• Manufacturer: Freescale Semiconductor, Inc

Enhanced Serial Audio Interface Timing
1
2
3
4
5
6
7
3-64
458 FST input (wl) to data out enable from high
459 FST input (wl) to transmitter drive enable
460 FST input (wl) setup time before TXC falling
461 FST input hold time after TXC falling edge
462 Flag output valid after TXC rising edge
463 HCKR/HCKT clock cycle
464 HCKT input rising edge to TXC output
465 HCKR input rising edge to RXC output
No.
V
i ck = internal clock
x ck = external clock
i ck a = internal clock, asynchronous mode (asynchronous implies that TXC and RXC are two different clocks)
i ck s = internal clock, synchronous mode (synchronous implies that TXC and RXC are the same clock)
bl = bit length
wl = word length
wr = word length relative
TXC(SCKT pin) = transmit clock
RXC(SCKR pin) = receive clock
FST(FST pin) = transmit frame sync
FSR(FSR pin) = receive frame sync
HCKT(HCKT pin) = transmit high frequency clock
HCKR(HCKR pin) = receive high frequency clock
For the internal clock, the clock cycle at the pin is defined by Icyc and the ESAI control registers.
The word-relative frame sync signal waveform relative to the clock operates in the same manner as the bit-length frame sync
signal waveform, but spreads from one serial clock before first bit clock (same as bit length frame sync signal), until the one
before last bit clock of the first word in frame.
Periodically sampled and not 100% tested.
CC
impedance
assertion
edge
= 3.3 V ± 0.16 V; T
Characteristics
Table 3-24 Enhanced Serial Audio Interface Timing (continued)
J
= 0°C to +100°C, C
1
,
2, 3
DSP56362 Technical Data, Rev. 4
L
= 50 pF
Symbol
—
—
—
—
—
—
—
—
Expression
—
—
—
—
—
—
—
—
21.0
40.0
Min
2.0
4.0
0.0
—
—
—
—
—
—
100 MHz
Max
27.0
31.0
32.0
18.0
27.5
27.5
—
—
—
—
—
Freescale Semiconductor
Condition
x ck
x ck
x ck
i ck
i ck
i ck
—
—
4
Unit
ns
ns
ns
ns
ns
ns
ns
ns