GDS1110AD Intel, GDS1110AD Datasheet - Page 4

• Manufacturer Part Number: GDS1110AD
• Manufacturer: Intel

Specifications of GDS1110AD

• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Not Compliant

SA-1111
PCMCIA and Compact Flash Interface
Pulse-Width-Modulated (PWM) Interface
AC-Link/I
SSP* Serial Data Port
System Bus Interface
4
2
S Serial Port for Audio
The PCMCIA and Compact Flash (CF) Interface drives all signals for two sockets (one for
PCMCIA and one for CF), without external buffering. The I/O buffers can drive signals at 3.3 V
and 5.0 V, or they can be turned off. The control logic and built-in buffers eliminate numerous
external “glue” and buffer/transceiver components, providing a highly integrated and low-power
solution for the creation of complete systems.
Two PWM outputs provide brightness and contrast control suitable for an LCD display. These
function as 8-bit digital-to-analog (D-to-A) converters, with the addition of inexpensive external
filter components. When not used for PWM output, the pins may be used for GPIO.
The full-duplex serial port for audio transfers serialized audio data to and from external devices
using AC-Link, I
are compliant with AC-Link standard 1.03—some features added to later revision AC’97 codecs
may not be supported. For AC’97 codecs, d igitized audio can pass in both directions
simultaneou sly using sample sizes up to 16 bits. For AC’97 codecs, the playback or audio out
(SA-1111 to codec) is fixed at 48 KHz. Variable-rate sampling for playback, which is not defined in
AC-Link standard 1.03, is not supported in hardware. The serial audio port supports variable
sample rates for incoming audio (codec to SA-1111). Codecs compliant with AC-Link standard
1.03 or later can select the incoming audio sample rate by software control.
The audio serial port also supports I
I
A full-duplex synchronous serial interface provides attachment to modem, telecom, and other
devices using serial protocols for data transfer. It supports National Microwire
Serial Protocol (SSP)
Serial Data Port data FIFOs can be accessed by system-initiated transfers that use SRAM-like
block data moves by the system processor.
The SBI is the primary interface between the SA-1111 and the SA-1110 processor. Its connection to
the full SA-1110 system memory bus is used for transferring data between the host processor and
the SA-1111 internal functional blocks. The SBI is used for three types of transfer:
2
•
•
S may be 8, 11.025, 16, 22.05, 32, or 44.1 KHz.
Register READs and WRITEs
SRAM-like single word transfers, initiated by the SA-1110 system processor.
Block-data READs and WRITEs
SRAM-like bursts across the system bus, initiated by the SA-1110 system processor. Block-
data transfers are used to fill or empty SRAM buffers serving the serial-port subsystems.
2
S or “MSB-Justified” formats. The AC-Link fully supports AC’97 codec that
*
, and Motorola Serial Peripheral Interface (SPI)
2
S or “MSB-Justified” mode requirements . Sample rates for
*
SA-1111 Brief Datasheet
serial protocols. The SSP
*
, TI Synchronous