PI7C9X7954AFDE Pericom Semiconductor, PI7C9X7954AFDE Datasheet - Page 66

• Manufacturer Part Number: PI7C9X7954AFDE
• Description: IC PCIE-TO-UART BRIDGE 128LQFP
• Manufacturer: Pericom Semiconductor

Specifications of PI7C9X7954AFDE

• Applications: PCIe-to-Uart Bridge
• Interface: Advanced Configuration Power Interface (ACPI)
• Voltage - Supply: 1.8V, 3.3V
• Package / Case: 128-LQFP
• Mounting Type: Surface Mount
• Transmitter And Receiver Fifo Counter: Yes
• Package Type: LQFP
• Mounting: Surface Mount
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

September 2009 – Revision 1.3
Pericom Semiconductor
Table 9-4 Receiver Characteristics
a. Measured with Vtt = 1.2V, HiDrv=’0’,LowDrv=’0’ and Dtx=’0000’.
b. Minimum swing assumes LoDrv = 1, HiDrv = 0 and Dtx =1100
c. Max swing assumes LoDrv = 0, HiDrv = 1, Dtx = 0010, VTT = 1.8V
d. As measured between 20% and 80% points. Will depend on package characteristics.
e. Measured using PCI Express Compliance Pattern
LRLAT-10
LRLAT-20
Symbol
V
RL
RL
Z
Z
T
Jitter Parameters
UI
T
T
T
MAX-JITTER
Timing Parameters
L
L
L
T
T
T
Symbol
Voltage Parameters
V
V
V
T
Z
Z
Z
Z
RL
RL
Jitter Parameters
T
T
T
Timing Parameters
OSE
TX-DIFF-DC
TX-RISE, TTX-FALL
TX-MAX-JITTER
TX-EYE
TX-EYE-MEDIAN-to-
TLAT-10
TLAT-20
TX-SKEW
TX-IDLE-SET-TO-IDLE
EIExit
BTEn
RX-RISE, TRX-FALL
RX-DIFF-DC
RX-COM-DC
RX-COM-INITIAL-DC
RX-COM-HIGH-IMP-DC
RX-MAX-JITTER
RX-EYE
RX-EYE-MEDIAN-to-MAX-JITTER
TX-RCV-DETECT
RX-DIFFp-p
RX-IDLE-DET-DIFFp-p
RX-CM-AC
TX-DIFF
TX-CM
RX-DIFF
RX-CM
Description
Voltage change during Receive
Detection
Transmitter Differential Return loss
Transmitter Common Mode Return loss
Single-ended output impedance
DC Differential TX Impedance
Rise / Fall time of TxP, TxN outputs
Unit Interval
Transmitter total jitter (peak-to-peak)
Minimum TX Eye Width (1 -
T
Maximum time between the jitter
median and
maximum deviation from the median
Transmitter data latency (for n=10)
Transmitter data latency (for n=20)
Transmitter data skew between any 2
lanes
Maximum time to transition to a valid
electrical idle after sending an Electrical
Idle ordered set
Time to exit Electrical Idle (L0s) state
into L0
Time from asserting BeaconTxEn to
beacon being transmitted on the lane
TX-MAX-JITTER
Receiver data latency for n=10
Receiver data latency for n=20
09-0088
Description
Differential input voltage
(peak-to-peak)
Differential input threshold voltage
(peak-to-peak) to assert
TxIdleDetect output
Receiver common-mode voltage for
AC-coupling
Rise time / Fall time of RxP, RxN
inputs
Differential input impedance (DC)
Single-ended input impedance
Initial input common mode
impedance (DC)
Powered down input common mode
impedance (DC)
Receiver Differential Return Loss
Receiver Common Mode Return
Loss
Receiver total jitter tolerance
Minimum Receiver Eye Width
Maximum time between jitter
median and max deviation from
median
b
)
Page 66 of 70
a
399.88
Min
0.70
10
40
80
80
6
9
9
0
200k
Min
0.35
170
28
49
65
10
80
40
5
6
V
Typical
TX-DIFFp
Typical
100
400
50
12
30
100
50
50
0
PCI Express® Quad UART
400.12
200ps
Max.
0.30
110
0.15
Max.
0.325
120
1200
2 +
0.65
60
11
11
16
80
175
150
160
120
29
60
8
60
60
d
e
PI7C9X7954
Datasheet
Unit
Unit
bits
bits
mV
mV
mV
mV
dB
dB
UI
UI
UI
UI
UI
UI
ps
ns
ns
ns
dB
dB
UI
UI
UI
Ω
Ω
ps
Ps
Ω
Ω
Ω
Ω