ADP315PC87570 National Semiconductor, ADP315PC87570 Datasheet - Page 18

• Manufacturer Part Number: ADP315PC87570
• Description: Keyboard and Power Management Controller
• Manufacturer: National Semiconductor

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1.3.3
DEV environment is most commonly used to develop soft-
ware on Application Development Boards (ADBs) and In-
System Emulators (ISEs). In this environment, the develop-
ment tools can load code and data of up to 64 Kbytes to off-
chip RAM. This can replace the Base Memory used in
IRE/IRD environment (on-chip/off-chip boot-code). The de-
velopment tool can also load code and data of up to 56
Kbytes to off-chip RAM (application).
Development
Support
Configuration
(power-up reset)
DEV Environment
Inputs
32.768 KHz
Control
Crystal
Battery
Clock
Reset
RTC
or
V
CC
External Keyboard
R
NC
1
Interface
32KX1/32KCLKIN
32KX2
V
HD7-0
HA18-0
HAEN
HIOR
HIOW
HIOCHRDY
HMEMRD
HMEMWR
HMEMCS
IRQ1
IRQ8
IRQ11
IRQ12
GA20
HRSTO
HPWRON
HMR
ISE
CLK
BST2-0
PFS
PLI
BE1,0
CBRD
ENV1
ENV0
SHBM
HRMS
HDEN
TRIS
BAT
Figure 1-3. DEV Environment
External Mouse
PC87570
Interface
Introduction
18
In this environment, the pins of ports PF, PG and PH are al-
located for the interface to the Base Memory, for ISE inter-
rupt and for CR16A core status indication. The system may
re-gain these ports using the I/O Expansion protocol and
off-chip logic, while maintaining cycle-by-cycle and binary
compatibility with the IRE environment. Using the same soft-
ware, this environment is binary and cycle-by-cycle compati-
ble with IRD and IRE environments. All features of IRE
environment can be implemented either directly or by using
additional external logic. Figure 1-3 shows a system in DEV
environment.
EXINT0,10,11,15
A18-16, A15-0
KBSOUT15-0
Auxiliary PS/2
KBSIN7-0
Interface
WR1-0
DA3-0
SELIO
PG4-0
AGND
PC7-0
PD7-0
PH5-0
AD7-0
D15-8
PA6-0
PB7-0
PE1-0
PF7-0
AVCC
PFAIL
SWIN
RING
SEL1
SEL0
V
GND
D7-0
VCC
SDA
SCL
PC0
REF
RD
TB
TA
16
ADC
DAC
ACCESS.bus
16
* Optional 8/16 data bus
*
Keyboard
Interrupt
System
Internal
(Matrix)
Timers
Power
Supply
GPIO
Expansion
(Application)
SRAM or
Restored
External
Memory
Memory
Off-chip
(Boot code
Analog
Flash
Ports
Base
SRAM)
I/O
PF
PG
PH