PIC24FJ128GA Datasheet, PDF (148/232 Pages) Microchip Technology – General Purpose, 16-Bit Flash Microcontrollers

PIC24FJ128GA FAMILY
FIGURE 17-2:
LEGACY PARALLEL SLAVE PORT EXAMPLE
Master
PMD<7:0>
PIC24F Slave
PMD<7:0>
PMCS
PMRD
PMWR
PMCS
PMRD
PMWR
Address Bus
Data Bus
Control Lines
FIGURE 17-3:
ADDRESSABLE PARALLEL SLAVE PORT EXAMPLE
Master
PMA<1:0>
PMD<7:0>
PMA<1:0>
PIC24F Slave
PMD<7:0>
Write
Address
Decode
Read
Address
Decode
PMCS
PMRD
PMWR
Address Bus
Data Bus
Control Lines
PMCS
PMRD
PMWR
PMDOUT1L (0)
PMDOUT1H (1)
PMDOUT2L (2)
PMDOUT2H (3)
PMDIN1L (0)
PMDIN1H (1)
PMDIN2L (2)
PMDIN2H (3)
TABLE 17-1: SLAVE MODE ADDRESS RESOLUTION
PMA<1:0>
Output Register (Buffer)
00
PMDOUT1<7:0> (0)
01
PMDOUT1<15:8> (1)
10
PMDOUT2<7:0> (2)
11
PMDOUT2<15:8> (3)
Input Register (Buffer)
PMDIN1<7:0> (0)
PMDIN1<15:8> (1)
PMDIN2<7:0> (2)
PMDIN2<15:8> (3)
FIGURE 17-4:
MASTER MODE, DEMULTIPLEXED ADDRESSING (SEPARATE READ AND
WRITE STROBES, TWO CHIP SELECTS)
PIC24F
PMA<13:0>
PMD<7:0>
PMCS1
PMCS2
PMRD
PMWR
Address Bus
Data Bus
Control Lines
DS39747C-page 146
Preliminary
© 2006 Microchip Technology Inc.