2
DS100MB203EVK User’s Guide
October 2012
Table 1. Switches to set the 4-level input control pins
4 – level Input Settings
Setting for 3 pin switches (3-2-1)
0 – Tie 1k ohm to GND
ON
– OFF – OFF
R – Tie 20k ohm to GND
OFF –
ON
– OFF
F – FLOAT (open)
OFF – OFF – OFF
1 – Tie 1k ohm to VIH
OFF – OFF –
ON
The following switches are used to set the input condition for the 4-level inputs:
SW1, SW2, SW3, SW5, SW6, SW8, SW9.
There are 3 switches connected to an input signal pin. Each switch when set to the ON position sets the pin to one
of the 4-level setting. The 6 pin switches are assigned similar to the 3 pin switches. The only difference is 2 signal
pins are connected and thus 6-5-4 is for the one signal pin and 3-2-1 is for another signal pin. Please note only 1
switch at the ON position is allowed.
Table 2. Connection and Control Description
Component
Name
Function
J9 to J16
J5 to J8
S_INA0, S_INB0,
SINA1, S_INB1,
D_IN0, D_IN1
High speed differential inputs.
J1 to J4
J17 to J24
D_OUT0, D_OUT1,
S_OUTA0, S_OUTB0,
S_OUTA1, S_OUTB1
High speed differential outputs.
J28
VIN
DC Power – VIN = 3.3V
J29
GND
Ground
J30
VDD
DC Power – VDD = 2.5V
J27
VIN or VDD
Jumper – VIN or VDD to VIH power
J25
SDA, SCL
Optional SMBUS access 1x4 header pins
J26
EEPROM
Optional socket for EEPROM
SW1
EQ_S[1:0] or AD[3:2]
PIN MODE – EQ control for channel S inputs
SMBUS MODE – AD[3:2] device address bits
SW2
ENSMB
ENSMB = 0 – PIN MODE
ENSMB = 1 – SMBUS (slave mode)
ENSMB = Float – SMBUS (master mode – load configuration from EEPROM)
SW3
DEM_S[1:0]
PIN MODE – DE control for channel S outputs
SW4
SDA/SCL
“ON” position connects SDA and SCL lines to the device pin.
SW5
DEM_D[1:0] or AD[1:0]
PIN MODE – DE control for channel D outputs
SMBUS MODE – AD[1:0] device address bits
SW6
SEL0
SEL1
SEL0 pin for Lane 0
0: selects input /-, output /-.
R: selects input /-, output /-.
F: selects input /-, output /-.
1: selects input /-, output /-.
SEL1 pin for Lane 1
0: selects input /-, output /-.
R: selects input /-, output /-.
F: selects input /-, output /-.
1: selects input /-, output /-.
SW7
VDD_SEL
RESET
VDD_SEL – Enable or disable the internal 3.3V to 2.5V regulator (GND –
enables the internal LDO for 3.3V to 2.5V).
RESET – Enable or disable the device (GND – enables the device).
SW8
EQ_D[1:0]
PIN MODE – EQ control for channel D inputs