CDB8130 Cirrus Logic Inc, CDB8130 Datasheet - Page 6

• Manufacturer Part Number: CDB8130
• Description: BOARD EVAL FOR CS8130
• Manufacturer: Cirrus Logic Inc

Specifications of CDB8130

• Main Purpose: Interface, Infrared Transceiver
• Utilized Ic / Part: CS8130
• Description/function: Audio DSPs
• Operating Supply Voltage: 2.7 V to 5.5 V
• Product: Audio Modules
• For Use With/related Products: CS8130
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Secondary Attributes: -
• Embedded: -
• Primary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1161

Removing J35 will disconnect power from the lev-
el translator.
All the digital signals on the CS8130, FORM/BSY,
D/C, TXD, RXD, EXTCLK, RESET, PWRDN,
and CLKFR can be accessed directly from header
J11. All digital input pins are tied to 47 kΩ pull-up
resistors through resistor set R1.
1.6
The clock for the CS8130 can be supplied via a
crystal tied between XTALIN and XTALOUT (the
default configuration on the evaluation board) or
by an external clock supplied through the EXT-
CLK pin.
To operate the CS8130 from an external clock
source, cut the trace under J3 (XTAL), and the
(XTAL) part of J4, then connect the center pin of J4
to the edge pin marked EXT.
Note: the EXTCLK pin on the CS8130 can be ei-
ther an input or an output. If the CS8130 is being
clocked from a crystal, EXTCLK is an output. If
no crystal is present, EXTCLK is an input. This de-
termination of direction is made while RESET is
asserted.
The CS8130 can be operated from either a 3.6864
MHz or a 1.8432 MHz clock source. If operating
from a 3.6864 MHz source, jumper J18 (CLKFR)
must be installed. This brings the CLKFR pin on
the CS8130 low. If operating from a 1.8432 MHz
source, jumper J18 should be removed.
1.7
Jumper J14 (PWRDN) controls the state of the
PWRDN pin on the CS8130. PWRDN is asserted
when J14 is installed.
1.8
Key digital signals on the CS8130 are displayed on
indicator LEDs U6 (U8) and U7 (U9), shown sche-
matically in Figure 4. Because these LEDs are
driven through inverters, the interpretation of what
6
Clock Selection
Power Down
Status Indicator LEDs
it means when a LED is lit can be confusing. Table
2 should help clarify this.
1.9
The CDB8130 evaluation kit comes equipped with
software that can be used to evaluate and test the
CS8130. Additional software is currently under
development.
See the documentation supplied with the CDB8130
evaluation kit for instructions on how to use the
software.
Software updates and new releases can be down-
loaded from the Crystal BBS. Contact the factory
for details.
FORM/BSY
PWRDN
RESET
LED1C
LED2C
Name
RXD
TXD
D/C
Software
Table 2. LED Indicator Meanings
Data being transmitted to the CS8130
Data being received by the CS8130
Auto detect ASK/TV TX ready
CS8130 in Control Mode
Power down asserted
Transmitter #1 active
Transmitter #2 active
LED On means. . .
Reset asserted
CDB8130
DS170DB5