HDSP-390X Agilent(Hewlett-Packard), HDSP-390X Datasheet - Page 10

• Manufacturer Part Number: HDSP-390X
• Description: 20 mm (0.8 inch) Seven Segment Displays
• Manufacturer: Agilent(Hewlett-Packard)

HDMP-1012 (Tx) Timing
Figure 6 shows the Tx timing
diagram. Under normal
operations, the Tx PLL locks an
internally generated clock to the
incoming STRBIN. The incoming
data, D0-D19, ED, FF, DAV*,
CAV*, and FLAG, are latched by
this internal clock. For
MDFSEL=0, the input rate of
STRBIN is expected to be the
same as the parallel data rate. For
MDFSEL=1, STRBIN should be 1/
2 of the incoming parallel data
HDMP-1012 (Tx) Timing Characteristics
Tc = 0 C to +85 C, V
Figure 6. HDMP-1012 (Tx) Timing Diagram.
582
Symbol
T
t
t
s
h
strb
STRBIN
MDFSEL = 0
STRBIN
MDFSEL = 1
D00 - D19
ED, FF
DAV*, CAV*
FLAG
STRBOUT
DOUT
HCLK
Setup Time, for Rising Edge of STRBIN Relative to
D0-D19, ED, FF, DAV*, CAV* and FLAG
Hold Time, for Rising Edge of STRBIN Relative to
D0-D19, ED, FF, DAV*, CAV* and FLAG
STRBOUT - STRBIN Delay
EE
= -4.5 V to -5.5 V
1/2 FRAME PERIOD
t
s
Parameter
rate. The data must be valid
before it’s sampled for the set-up
time (t
it’s sampled for the hold time (t
The set-up and hold times are
referenced to STRBIN. This
reference is the positive edge of
STRBIN for MDFSEL=0, and is 1/
2 the frame period from the
positive or negative edge of
STRBIN for MDFSEL=1.
STRBOUT appears after this
reference with a delay of T
The rate of STRBOUT is always
s
), and remain valid after
t
t
strb
d
t
h
D-FIELD
strb
.
h
).
the same as the word rate of the
incoming data, independent of
MDFSEL.
The start of a frame, D0, in the
high speed serial output occurs
after a delay of td after the rising
edge of the STRBIN. The typical
value of td may be calculated by
using the following formula:
0.5 ns) ns
td = ( 2 * serial bit duration -
Units
nsec
nsec
nsec
C-FIELD
Min.
6
0
Typ.
1.5
Max.
3