Z89340 datasheet(12/30 Pages) ZILOG

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Z89340

Digital Wavetable Engine

1-12

P R E L I M I N A R Y

DS96DSP0201

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.

Figure 9. CODEC Interface Timing Diagram

CODEC_STROBE_n

CODEC_SCLK_n

CODEC_SDIN_n

CODEC_SDOUT_n

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