Z89340 Datasheet, PDF (12/30 Pages) Zilog, Inc. – Digital Wavetable Engine

Z89340
Digital Wavetable Engine
CODEC INTERFACE TIMING DIAGRAM
CODEC_STROBE_n
CODEC_SCLK_n
CODEC_SDIN_n
CODEC_SDOUT_n
Figure 9. CODEC Interface Timing Diagram
PIN FUNCTIONS
ADC_VREF_HI, ADC_VREF_LO. Analog-to-Digital Con-
verter Voltage Reference.
ADC_0–3 (I/O). Joystick button 0-3.
ADC_4–7 (Input). Game port 4-7.
AGND. Analog Ground.
AUX_CS0–3 (Ouput). Auxiliary chip-select. These pins
are used to select the CD-ROM interfaces.
AVDD. Analog Supply.
CAS (Output). Column Address Strobe Output. This mem-
ory address strobe is used in conjunction with the address
lines ROMADD01–R0MADD23.
CLKOUT (Output). Clock Output.
CODEC_SCLK (Output). Serial clock signal 0-1.
CODEC_SD_IN (Input). Serial data in 0-1.
CODEC_SD_OUT (Output). Serial data out 0-1.
CODEC_STROBE_0–3 (Output) Serial CODEC chip se-
lect strobe 0-3.
GND. Ground.
ISA_AEN (Input). ISA Bus Address Enable. This is the ad-
dress enable line and should be connected to the ISA bus
signal of the same name.
ISA_BHE (I/O). ISA Bus High Byte Enable.
ISA_DACK_01,03,05,06,07 (Input). ISA DMA Acknowl-
edge 01,03,05,06,07. These are DMA acknowledge pins
and should be connected to the appropriate ISA bus lines.
ISA_DRQ_01,03,05,06,07 (Tristate/Output). ISA DMA
Request 01,03,05,06,07. These are DMA request pins and
should be connected to the appropriate ISA bus lines.
ISA_IOCHRDY (Output). Connected to the ISA bus signal
of the same name.
ISA_IOCS16 (Tristate/Output). ISA I/0 Select 16-bit Trans-
fer. This pin is used during 16-bit DMA transfers and
should be connected to the ISA bus signal of the same
name.
ISA_IOR (I/O). ISA I/0 Read. This is the I/0 Read. The I/0
read pulse should be connected to the ISA bus signal of
the same name.
ISA_IOW (I/O). ISA I/0 Write. This is the I/0 write pulse line
that should be connected to the ISA bus signal of the same
name.
ISA_IRQ_05,07,09,10,11 (Output). ISA Interrupt Request
05,07,09,10,11. These are Interrupt request pins and
should be connected to the appropriate ISA bus lines.
ISA_LA_17–23 (Tri-State Output). ISA Address Bus.
These lines map directly to the PC address bus; the pins
should be connected to the ISA bus address lines of the
same name.
ISA_MASTER16 (Tr-State Output). ISA Master Mode 16-
bit Transfer.
ISA_MEMR (I/O). ISA Memory Read.
1-12
PRELIMINARY
DS96DSP0201