Datasheet

9
When jumpered for indirect addressing (PMA to A is open), the ENC624J600 PSP
connections simplify to the following:
Interface Signal Connections for PSP Modes 1 and 2 (Indirect Addressing)
Note that for the indirect PSP Modes 1 and 2, the ENC624J600 A8 address line is
connected to RD11/PMPCS1 (PMP address line A14). This necessitates slightly unusual
usage of the PMP module with address translation required in the application firmware.
However, this translation can be performed at compile time, resulting in no run-time
performance degradation. By not using the RF5/PMA8/U2TX pin for this address bit, the
PIC MCU’s UART2 module can still be used.
When indirect addressing is selected, the unconnected ENC624J600 A9-A14 address lines
are automatically pulled high by pull-up resistors on the PICtail Daughter Board. A fixed
application could tie these pins directly to V
DD without the use of resistors.
J1
Pin
Signal Name
Function
ENC624J600
Explorer 16 and
PIC32 I/O Exp.
33 A2 RG9/PMPA2/SS2 Address<2> from PIC
®
MCU
35 A5 RG6/PMPA5/SCK2 Address<5> from PIC MCU
37 A4 RG7/PMPA4/SDI2 Address<4> from PIC MCU
39 A3 RG8/PMPA3/SDO2 Address<3> from PIC MCU
45 A7 RA9/PMPA7 Address<7> from PIC MCU
46 A6 RA10/PMPA6 Address<6> from PIC MCU
83 A1 RB14/PMPA1 Address<1> from PIC MCU
84 A0 RB15/PMPA0 Address<0> from PIC MCU
97 WR
(1)
or EN
(2)
RD4/PMPWR Write
(1)
or Enable
(2)
Strobe from PIC
MCU
98 RD
(1)
or R/W
(2)
RD5/PMPRD Read Strobe
(1)
or Read/Write
(2)
Select
from PIC MCU
104 A8 RD11/PMPCS1 Address<8> from PIC MCU
109-116 AD0-AD7 RE0/PMPD0-
RE7/PMPD7
Bidirectional Data<0:7>
Note 1: PSP Mode 1.
2: PSP Mode 2.