3. Detailed Description of Functions
12
EPSON
S1V30333/300/120 Evaluation Board
User Guide (Rev. 1.03)
3.6
Jumper Pin Functions and Settings
3.6.1
External Memory Settings
Confirm that JP1 is set to the defaults, as shown in Table 3-14 below.
Table 3-14 JP1 settings
JP1 setting
Remarks
1 to 3pin Short, 2 to 4pin Short
Default
3.6.2
Level Shifter Settings
JP8 and JP9 should be set as shown in Table 3-14 when evaluating with an external host
(Fig. 2-3) or evaluation board host connected (Fig. 2-4), depending on whether the power
supply and signal level are both 3.3 V for the external board and evaluation board or
whether they differ and are between 3.3 V and 5.5 V.
Table 3-15 J8 and J9 settings
Power supply/Signal level
J8/J9 settings
Both power supplies: 3.3 V
1 to 2pin Short
Different power supplies: between 3.3 V and 5.5 V
2 to 3pin Short
3.6.3
Audio Output Jack Precautions
Audio output jacks J14, J15, and J16 are connected to the differential amplifier output
signal. Care must be taken when connecting devices, as short-circuiting to GND or other
signals will damage the amplifier.
Top View
SPI
A
B B
Differential
amplifier
VOUT-N
VOUT-P
VOUT-N
VOUT-N
VOUT-P
