10 603 Hardware Specifications, REV 2
Preliminary—Subject to Change without Notice
14a SYSCLK to output
valid (5.5 V to
0.8 V— all except
TS, ABB, ARTRY,
DBB)
— 16.0 — 15.0 — 14.0 — 13.0 — 12.0 ns 4
14b SYSCLK to output
valid (all except TS,
ABB, ARTRY, DBB)
— 14.0 — 13.0 — 12.0 — 11.0 — 10.0 ns 6
15 SYSCLK to output
invalid (output hold)
1.5 — 1.5 — 1.5 — 1.5 — 1.5 — ns 3
16 SYSCLK to output
high impedance (all
except ARTRY, ABB,
DBB)
— 12.5 — 11.5 — 10.5 — 9.5 — 8.5 ns
17 SYSCLK to ABB ,
DBB, high
impedance after
precharge
— 1.0 — 1.0 — 1.0 — 1.0 — 1.2 t
sys
5, 7
18 SYSCLK to AR TRY
high impedance
before precharge
— 12.0 — 11.0 — 10.0 — 9.0 — 8.0 ns
19 SYSCLK to AR TRY
precharge enable
0.2
*
t
sys
+ 1.0
— 0.2
*
t
sys
+ 1.0
— 0.2
*
t
sys
+ 1.0
— 0.2
*
t
sys
+ 1.0
— 0.2
*
t
sys
+ 1.0
— ns 3, 5, 8
20 Maximum delay to
A
RTRY precharge
—
1.0
—
1.0
—
1.0
—
1.0
—
1.2
t
sys
5, 8
21 SYSCLK to AR TRY
high impedance
after precharge
— 2.0 — 2.0 — 2.0 — 2.0 — 2.25 t
sys
5, 8
Notes: 1. All output specifications are measured from the 1.4 V of the rising edge of SYSCLK to the TTL level (0.8 V or 2.0 V) of
the signal in question. Both input and output timings are measured at the pin. See Figure 4.
2. All maximum timing specifications assume C
L
= 50 pF.
3. This minimum parameter assumes C
L
= 0 pF.
4. SYSCLK to output valid (5.5 V to 0.8 V) includes the extra delay associated with discharging the external voltage from
5.5 V to 0.8 V instead of from Vdd to 0.8 V (5 V CMOS levels instead of 3.3 V CMOS levels).
5. t
sys
is the period of the external bus clock (SYSCLK) in nanoseconds (ns). The numbers given in the table must be
multiplied by the period of SYSCLK to compute the actual time duration (in nanoseconds) of the parameter in question.
6. Output signal transitions from GND to 2.0 V or Vdd to 0.8 V.
7. Nominal precharge width for ABB and DBB is 0.5 t
sysclk
.
8. Nominal precharge width for ARTRY is 1.0 t
sysclk
.
Table 7. Output AC Timing Specifications (Continued)
Vdd = 3.3 ± 5% V dc, GND = 0 V dc, C
L
= 50 pF, 0
≤
T
J
≤
105
°
C
Num Characteristic
25 33.33 40 50 66.67
Unit Notes
Min Max Min Max Min Max Min Max Min Max
