AN1154 STMicroelectronics, AN1154 Datasheet - Page 71

• Manufacturer Part Number: AN1154
• Description: 8031-PSD DESIGN TUTORIAL
• Manufacturer: STMicroelectronics

-- Title:8XX Tutorial--Discrete Solution
-- Function:Replacement for the programmable logic portions of the M88x3Fxx
-- Designed by:Dan Harris
-- Design date:6/15/98
-- Description:This design shows what chip and logic would be required to replace
the
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the ADC
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-- Convention:The tilde (~) is used throughout this design to indicate active low
signals.
CONSTANT PAGE_REG_ADDR
CONSTANT VM_REG_ADDR
CONSTANT MCU_IO_OUT_ADDR
CONSTANT DESIRED_REG_ADDR = H"0920";
CONSTANT GAIN_REG_ADDR
CONSTANT START_SIG_ADDR
subdesign 8XXtutor
(
-- The following signals are generated by the MCU (U1):
A/D[7..0]: BIDIR;-- Multiplexed address (lower byte)/data bus
A[15..8]: INPUT;-- Upper byte of the addr bus
RD~
WR~
ALE
PSEN~ : INPUT;-- Program store enable
-- System-level inputs:
Reset~ : INPUT;-- System reset
Clock : INPUT;-- System clock
-- The following signals are generated for the MCU (U1):
AGC_Interrupt~: OUTPUT;-- Interrupt the MCU when the desired and measured signal
levels don’t match
programmable logic portions of the M8813F1x. This chip will be responsible
for the following tasks:
* Latching the address generated by the 80C31 MCU.
* Decoding the address and generating internal/external chip selects.
* Storing control/status information in internal registers.
* Address translation for memory pageng.
* Interfacing to and controlling of the PGA in the Receiver circuit, and
* Interfacing to a JTAG-compatible port for ISP.
: INPUT;-- Read strobe
: INPUT;-- Write strobe
: INPUT;-- addr latch enable signal
RTC, SRAM, EEPROM, FLASH, and MCU.
APPENDIX D: DESIGN FILE FOR EPM7064S (U2 OF FIGURE 2)
= H"09E2";
= H"09E0";
= H"0901";
= H"0921";
= H"0902";
AN1154 - APPLICATION NOTE
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