OX16PCI952-TQAG OXFORD [Oxford Semiconductor], OX16PCI952-TQAG Datasheet - Page 64

• Manufacturer Part Number: OX16PCI952-TQAG
• Description: Integrated High Performance Dual UARTs, Parallel Port and 5.0v PCI interface
• Manufacturer: OXFORD [Oxford Semiconductor]

12 AC ELECTRICAL CHARACTERISTICS
12.1 PCI I/O Buffers
Eq. A :
Eq. B :
12.2 Serial Ports
Isochronous (x1 Clock) Timing:
Note 1:
x1 clock. The system designer is should ensure that mark-to-space ratio of the x1 clock is such that the required set-up and hold timing constraint are met. One
way of achieving this is to choose a crystal frequency which is twice the required data rate and then divide the clock by two using the on-board prescaler. In this
case the mark-to-space ratio is 50/50 for the purpose of set-up and hold calculations.
DS-0028 Jul 05
OXFORD SEMICONDUCTOR LTD.
t
t
t
Symbol
irs
irh
its
AC Specifications
I
Slew
Slew
I
OH(AC)
OL(AC)
I
I
All PCI I/O buffers are compliant to the AC Electrical Characteristics of the 5.0v signalling environment, as defined in the
PCI Local Bus Specification, revision 2.2. (Section 4.2.1.2 of this specification)
CL
HL
In Isochronous mode, transmitter data is available after the falling edge of the x1 clock and the receiver data is sampled using the rising edge of the
R
F
Parameter
SIN set-up time to Isochronous input clock ‘Rx_Clk_In rising
SIN hold time after Isochronous input clock ‘Rx_Clk_In’ rising
SOUT valid after Isochronous output clock ‘Tx_Clk_Out’ falling
Switching current
high
(Test point)
Switching current
low
(Test point)
Low clamp current
High clamp current
Output rise slew rate
Output fall slew rate
I
I
OH
OL
= 78.5 * V
= 11.9 * (V
OUT
OUT
* (4.4 - V
- 5.25) * (V
Table 32: Characteristics of PCI I/O buffers
OUT
Table 33: Isochronous mode timing
0 < V
1.4 < V
3.1 < V
V
2.2 > V
0.71 > V
V
-5 < V
V
V
0.4V to 2.4V
2.4V to 0.4V
V
OUT
OUT
CC
CC
OUT
OUT
)
+4 < V
+1
= 3.1
= 0.71
OUT
≥ 2.2
+ 2.45)
IN
External-Free Release
OUT
OUT
OUT
< -1
OUT
≤ 1.4
≤ 2.4
≤ V
> 0.55
> 0
IN
CC
<
for 3.1 < V
for 0.71 > V
-44 (V
25+ (V
1
-25 + (V
1
V
1
OUT
OUT
OUT
0.015
0.015
IN
OUT
-44
95
- 1.4)/0.024
/ 0.023
1
1
-V
≤ V
IN
> 0
CC
+1)/
CC
-1)/
TBD
TBD
TBD
Min
Eq. A
Eq. B
-142
206
5
5
Max
0.1
10
6
OX16PCI952
V/nS
V/nS
mA
mA
mA
mA
Units
Page 64
ns
ns
ns