cs49329 Cirrus Logic, Inc., cs49329 Datasheet - Page 83

• Manufacturer Part Number: cs49329
• Description: Multi-standard Audio Decoder Family
• Manufacturer: Cirrus Logic, Inc.

CLKSEL—DSP Clock Select: Pin 31
DATA7, EMAD7, GPIO7—Pin 8
DATA6, EMAD6, GPIO6—Pin 9
DATA5, EMAD5, GPIO5—Pin 10
DATA4, EMAD4, GPIO4—Pin 11
DATA3, EMAD3, GPIO3—Pin 14
DATA2, EMAD2, GPIO2—Pin 15
DATA1, EMAD1, GPIO1—Pin 16
DATA0, EMAD0, GPIO0—Pin 17
A0, SCCLK—Host Parallel Address Bit Zero or Serial Control Port Clock: Pin 7
A1, SCDIN—Host Address Bit One or SPI Serial Control Data Input: Pin 6
RD, R/W, EMOE, GPIO11—Host Parallel Output Enable or Host Parallel R/W or External Memory
Output Enable or General Purpose Input & Output Number 11: Pin 5
WR, DS, EMWR, GPIO10—Host Write Strobe or Host Data Strobe or External Memory Write
Enable or General Purpose Input & Output Number 10: Pin 4
CS—Host Parallel Chip Select, Host Serial SPI Chip Select: Pin 18
DS339F7
This pin selects the clock mode of the CS493XX. When CLKSEL is low, CLKIN is connected
to the internal PLL from which all internal clocks are derived. When CLKSEL is high CLKIN is
connected to the DSP clock. INPUT
In parallel host mode, these pins provide a bidirectional data bus. 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.
BIDIRECTIONAL - Default: INPUT
In parallel host mode, this pin serves as one of two address input pins used to select one of
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
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. 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. At reset this pin
acts as one of the mode select pins. It requires a 3.3k Ohm pull-up or pull-down.
BIDIRECTIONAL - Default: 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. At reset this pin
acts as one of the mode select pins. It requires a 3.3k Ohm pull-up or pull-down.
BIDIRECTIONAL - Default: 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. INPUT
2
C clock input. INPUT
CS49300 Family DSP
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