PI3EQX4951ST Datasheet, PDF (2/9 Pages) Pericom Semiconductor Corporation – 3.3V, 1-port, SATA2 i/m ReDriver with Analog/Digital Configuration

PI3EQX4951ST
3.3V, 1-Port, SATA2 i/m ReDriver™with Analog/Digital Configuration
Pin Description
Standard Enhanced
Mode Pin Mode Pin Pin
#
#
Name
9
19
A_EM
—
18
1
1
2
2
15
15
14
14
A_EQ
AI+
AI-
AO+
AO-
8
9
B_EM
—
8
11
11
12
12
5
5
4
4
7
7
B_EQ
BI+
BI-
BO+
BO-
EN
Type
Input
Input
Input
Output
Input
Input
Input
Output
Input
Description
Output emphasis adjustment for channel A.
When in Standard Mode (MODE= 0) digital control is enabled, and a 150K-
Ohm pull-up resistor is enabled on A_EM.
When in Enhanced Mode (MODE= 1) analog resistive adjustment of emphasis is
enabled.
Refer to Configuration Tables and System Implementation diagrams for design
guidelines.
Channel A Equalization adjustment is active only in Enhanced Mode
(MODE = 1). With internal 150K-Ohm pull-up to V_DD. Refer to Enhanced
Mode Configuration Table and System Implementation diagram for design
guidelines.
CML input forward channel A with internal 50-Ohm pull-up resistors connect-
ed to VBIAS (100-Ohm differential).
CML output channel A with internal 50-Ohm pull-up resistors connected to
VBIAS (100-Ohm differential).
Output emphasis adjustment for channel B.
When in Standard Mode (MODE= 0) digital control is enabled, and a 100-Ohm
pull-up resistor is enabled on A_EM.
When in Enhanced Mode (MODE= 1) analog resistive adjustment of
emphasis is enabled.
Refer to Configuration Tables and System Implementation diagrams for design
guidelines.
Channel A Equalization adjustment, is active only in Enhanced Mode
(MODE = 1). With internal 150K-Ohm pull-up to V_DD. Refer to Enhanced
Mode Configuration Table and System Implementation diagram for design
guidelines.
CML input return channel B with internal 50-Ohm pull-up, resistor connected
to VBIAS (100-Ohm differential).
Positive CML output channel B with internal 50-Ohm pull-up resistor connect-
ed to VBIAS (100-Ohm differential).
Chip Enable "High" provides normal operation. "Low" for power down mode.
With internal 150K-Ohm pull-up resistor.
18, 19,
Center Pad
Center Pad
GND
GND
Supply ground.
10, 20
10, 20
17
17
3, 6, 13, 16 3, 6, 13, 16
V_DD
Power
MODE Input
NC
—
3.3V supply voltage ± 10%
MODE selects Enhanced Mode operation and pin function when high. When
MODE is low, Standard Mode operation is selected. With 150K-Ohm pull-up
resistor to V_DD. See Configuration tables for use information.
No internal connection
10-0142
2
www.pericom.com
PS9072A
03/23/10