PDIUSBD12 Datasheet, PDF (24/35 Pages) NXP Semiconductors – USB interface device with parallel bus

Philips Semiconductors
PDIUSBD12
USB interface device with parallel bus
15. Dynamic characteristics
Table 16: AC characteristics (AI/O pins; FULL speed)^[1]
C_L = 50 pF; R_PU = 1.5 kΩ on D+ to V_CC; unless otherwise specified.
Symbol Parameter
Conditions
Driver characteristics
t_R
rise time
t_F
fall time
t_RFM
rise/fall time matching (t_R/t_F)
V_CRS output signal crossover voltage
Driver timings
10% to 90%
10% to 90%
t_EOPT source EOP width
t_DEOP differential data to EOP transition skew
Receiver timings:
see Figure 16
see Figure 16
t_JR1
t_JR2
t_EOPR1
receiver data jitter tolerance to next transition
receiver data jitter tolerance for paired transitions
EOP width at receiver
must reject as EOP;
see Figure 16
t_EOPR2 EOP width at receiver
must accept as EOP;
see Figure 16
[1] Test circuit, see Figure 22.
[2] Characterized but not implemented as production test. Guaranteed by design.
Min Max Unit
4
20 ns
4
20 ns
90 110 %
1.3 2.0 V
160 175 ns
−2 +5 ns
−18.5 +18.5 ns
−9 +9 ns
[2] ₄₀
-
ns
[2] ₈₂
−
ns
t_PERIOD
DIFFERENTIAL
DATA LINES
CROSSOVER POINT
CROSSOVER POINT
EXTENDED
DIFFERENTIAL DATA TO
SEO/EOP SKEW
N * t_PERIOD + t_DEOP
Fig 16. Differential data-to-EOP transition skew and EOP width.
SOURCE EOP WIDTH: t_EOPT
RECEIVER EOP WIDTH: t_EOPR1, t_EOPR2
SV00837
9397 750 09238
Product data
Rev. 08 — 20 December 2001
© Koninklijke Philips Electronics N.V. 2001. All rights reserved.
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