PI3EQX4951B Datasheet, PDF (2/9 Pages) Pericom Semiconductor Corporation – 3.3V, 1-port, SATA2 i/m ReDriver with Analog/Digital Configuration

PI3EQX4951B
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
—
3
—
18
1
1
2
2
14
14
15
15
A_EN#
A_EQ
AI+
AI-
AO-
AO+
8
9
B_EM
—
13
B_EN#
—
8
B_EQ
11
11
BI+
12
12
BI-
4
4
BO-
5
5
BO+
7
7
EN
3, 13, 18,
19, Center
Pad
6,10, 16, 20
Center Pad
6, 10, 16, 20
GND
V_DD
17
17
MODE
Type
Input
Input
Input
Input
Output
Input
Input
Input
Input
Output
Input
GND
Power
Input
Description
Output emphasis adjustment for channel A.
àà When in Standard Mode (MODE= 0) digital control is enabled, and a
100KΩ pull-up resistor is enabled on A_EM.
àà 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 Enable, is active only when in Enhanced Mode (MODE=1). Low is
normal operation. High is power down mode. Has internal 100KΩ pull-down
resistor.
Channel A Equalization adjustment is active only in Enhanced Mode
(MODE = 1). With internal 100KΩ 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 50Ω pull-up resistors connected to
VBIAS (100Ω differential).
CML output channel A with internal 50Ω pull-up resistors connected to VBIAS
(100Ω differential).
Output emphasis adjustment for channel B.
àà When in Standard Mode (MODE= 0) digital control is enabled, and a
100KΩ pull-up resistor is enabled on A_EM.
àà 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 B Enable, is active only when in Enhanced Mode (MODE=1). Low is
normal operation. High is power down mode. Has internal 100KΩ pull-down
resistor.
Channel A Equalization adjustment, is active only in Enhanced Mode
(MODE = 1). With internal 100KΩ 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 50Ω pull-up, resistor connected to
VBIAS (100Ω differential).
Positive CML output channel B with internal 50Ω pull-up resistor connected to
VBIAS (100Ω differential).
Chip Enable "High" provides normal operation. "Low" for power down mode.
With internal 100KΩ pull-up resistor.
Supply ground.
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 internal 100KΩ pull-
up resistor to V_DD. See Configuration tables for use information.
10-0248
2
www.pericom.com
PS9016B
12/09/10