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SD-AT1000
FUNCTION TABLE OF IC
IC101 VHiCS493264-1: DSP (CS493264) (1/3)
1
VD1
Input
Digital positive supplies. Norm 2.5 V.
2
DGND1
—
Digital ground.
3
AUDATA3, XMT958
Output
CMOS level output that contains a biphase-mark encoded (S/PDIF) or I
2
S or Left
Justified digital audio data which is capable of carrying two channels of PCM
digital audio or an IEC61937 compressed-data interface.
Note: Outputting of IEC61937 is only available for certain broadcast-based
application codes which run on the CS4931X family or CS49330 device.
This output typically connects to the input of an RS-422 transmitter or to the
input of an optical transmitter.
4
WR, DS, EMWR, GPIO10
Input
In Intel parallel host mode, this pin serves as the active-low data-write-input
strobe. In Motorola parallel host mode, this pin serves as the active-low data-
strobe-input signal. In serial host mode, this pin can serve as the external-
memory active-low write-enable output signal. Also in serial host mode, this pin
can serve as a general purpose input or output bit.
5
RD, R/W, EMOE, GPIO11
Input
In Intel parallel host mode, this pin serves as the active-low data bus enable
input. In Motorola parallel host mode, this pin serves as the read-high/write-low
control input signal. In serial host mode, this pin can serve as the external
memory active-low data-enable output signal. Also in serial host mode, this pin
can serve as a general purpose input or output bit.
6
A1, SCDIN
Input
In parallel host mode, this pin serves as one of two address input pins used to
select one of four parallel registers. In SPI serial host mode, this pin serves as
the data input.
7
A0, SCCLK
Input
In parallel host mode, this pin serves as one of two address input pins used to
select one four parallel registers. In serial host mode, this pin serves as the serial
control clock signal, specifically as the SPI clock input or the I
2
C clock input.
8-11
DATA7, EMAD7, GPIO7-
Input
In parallel host mode, these pins provide a bidirectional data bus.
DATA4, EMAD4, GPIO4
If a serial host mode is selected, these pins can provide a multiplexed address
and data bus for connecting an 8-bit external memory. Otherwise, in serial host
mode, these pins can act as general-purpose input or output pins that can be
individually configured and controlled by the DSP.
12
VD2
Input
Digital positive supplies. Norm 2.5 V.
13
DGND2
—
Digital ground.
14-17
DATA3, EMAD3, GPIO3-
Input
In parallel host mode, these pins provide a bidirectional data bus.
DATA0, EMAD0, GPIO0
If a serial host mode is selected, these pins can provide a multiplexed address
and data bus for connecting an 8-bit external memory. Otherwise, in serial host
mode, these pins can act as general-purpose input or output pins that can be
individually configured and controlled by the DSP.
18
CS
Input
In parallel host mode, this pin serves as the active-low chip-select input signal.
In serial host SPI mode, this pin is used as the active-low chip-select input signal.
19
SCDIO, SCDOUT, PSEL, GPIO9
Input
In I
2
C mode, this pin serves as the open-drain bidirectional data pin. In SPI mode
this pin serves as the data output pin. In parallel host mode, this pin is sampled
at the rising edge of RESET to configure the parallel host mode as an Intel type
bus or as a Motorola type bus. In parallel host mode, after the bus mode has
been selected, the pin can function as a general-purpose input or output pin.
In I
2
C mode this pin is an OPEN DRAIN I/O and requires a 4.7 k Pull-Up.
20
INTREQ, ABOOT
—
Open-drain interrupt-request output. This pin is driven low to indicate that the
DSP has outgoing control data and should be serviced by the host. Also in serial
host mode, this signal initiates an automatic boot cycle from external memory if it
is held low through the rising edge of reset.
OPEN DRAIN I/O - Requires 4.7 kohms Pull-Up.
21
EXTMEM, GPIO8
Input
In serial control port mode, this pin can serve as an output to provide the chip-
select for an external byte-wide ROM. In parallel and serial host mode, this pin
can also function as a general-purpose input or output pin.
22
SDATAN1
Input
Digital-audio data input that can accept from one to six channels of compressed
or PCM data. SDATAN1 can be sampled with either edge of SCLKN1, depending
on how SCLKN1 has been configured.
23
VD3
Input
Digital positive supplies. Norm 2.5 V.
24
DGND3
—
Digital ground.
Pin No.
Function
Terminal Name
Input/Output
Summary of Contents for SD-AT1000
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