pi2eqx5804c Pericom Semiconductor Corporation, pi2eqx5804c Datasheet - Page 7

• Manufacturer Part Number: pi2eqx5804c
• Description: 5.0gbps 4-lane Pcie 2.0 Redriver? With Equalization & Emphasis
• Manufacturer: Pericom Semiconductor Corporation

The RESET# input is used to reset the receiver detect state machine to its initial state. The start of the receiver detect
cycle starts when RESET# transitions from low to high.
When a Receiver Detect cycle is begins the differential channel pins are enabled with a 2K-Ohm pullup to V
Ohm Receiver termination will change the pin level. This pin level is evaluated after a fi xed time-out, and the channel
is then set into the proper operating state. The output signals RX50_A and RX50_B represent the receiver detect result
for their specifi c channels.
The I/O Operation table summaries the relationships and operation of receiver detect and other signals involved with
I/O control.
Table 4 - I/O Operation Control
PD# RXD_x RESET#
0
1
1
1
1
1
1
1
Control Inputs
09-0044
X
0
0
0
1
1
1
1
X
0
1
1
0
1
1
1
RX50
X
X
X
X
X
0
1
1
Detection
States
SIG_x
X
X
X
X
0
1
0
1
Input Termination Output Termination Mode
50-Ohm pull-
50-Ohm pull-
50-Ohm pull-
50-Ohm pull-
down
down
down
down
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Data Channel I/O
7
2K-Ohm pull-up
2K-Ohm pull-up
2K-Ohm pull-up
2K-Ohm pull-up
2K-Ohm pull-up
50-Ohm pull-up
50-Ohm pull-up
Hi-Z
5.0Gbps 4-Lane PCIe® 2.0 ReDriver™ with
Full IC power down, all channels dis-
abled
Channel disabled, output pulls to V
Receiver detect reset
Channel enabled, no input signal, output
pulls to V
Channel enabled, valid input signal
detected, output driving. Receiver detect
disabled.
Channel disabled. Receiver detect reset.
Channel disabled, output pulls to V
Receiver detect enabled, no receiver
detected.
Channel inactive, output pulls to V
Receiver detect enabled, receiver de-
tected. No input signal
Channel active, valid input signal de-
tected, output driving. Receiver detect
enabled, load detected.
DD
Equalization & Emphasis
. Receiver detect disabled
PS8926B
PI2EQX5804C
DD
. A 50-
DD
DD
DD
04/09/09
.
.
.