pi2eqx5864c Pericom Semiconductor Corporation, pi2eqx5864c Datasheet - Page 7

• Manufacturer Part Number: pi2eqx5864c
• Description: 5.0gbps 4-lane Pci Express 2.0 Redriver With Equalization, Emphasis, &i 2 C Control
• Manufacturer: Pericom Semiconductor Corporation

Confi guration Register Summary
THE MOS-FET’S.
The requirements for the most important characteristics of the MOS-FET’s, used as bi-directional level shifter.
Type : N-channel enhancement mode MOS-FET.
Gate threshold voltage : VGS(th) min. 0.8V max. 1.5V
On resistance : RDS(on) max. 30 Ohm @ ID= 3mA, VGS= 2.5V
Input capacitance : Ciss max. 50 pF @ VDS= 1V, VGS = 0V
Switching times : ton toff max. 50 ns.
Allowed drain current : ID 30 mA or higher.
Byte
0
1
2
3
4
5
6
7
8
9
10
11
09-0050
Mnemonic
SIG
RX50
LBEC
INDIS
OUTDIS
RESET
PWR
RXDE
AEOC
BEOC
RSVD
RSVD
VDD1= 1.2V
PI2EQX5864C
Function
Signal Detect, indicates valid input signal level
Receiver Detect Output, indicates whether a receiver load was detected
Loopback and Emphasis Control, provides for control of the loopback function and emphasis mode (pre-
emphasis or de-emphasis)
Channel Input Disable, controls whether a channels input buffer is enabled or disabled
Channel Output Disable: Controls whether a channels output buffer is enabled or disabled
Channel Reset
Power Down Control, enables power down for each channel individually
Receiver Detect Enable, controls the receiver detect operation
A-Channels Equalizer and Output Control
B-Channels Equalizer and Output Control
Reserved
Reserved
“Lower voltage” section
Figure 2. Bi-directional Level Shifter Circuit
4.7k
27k
PI2EQX5864C
4.7k
10k
s
g
T1
Vbias = 2.4V
s
d
VDD2= 3.3 V
g
2SK3018
T2
7
d
100nf
“Higher voltage” section
2SK3018
with Equalization, Emphasis and I
5.0Gbps 4-Lane PCI Express 2.0 ReDdriver
10k
10k
to I2C controller
VDD2= 3.3 V
SDA
SCL
2
PS8934D
2
PI2EQX5864C
2
C Control
03/10/09