Datasheet

When jumpered for indirect addressing (PMA to AD is open), the ENC624J600 PSP

connections simplify to the following:

Interface Signal Connections for PSP Modes 5 and 6 (Indirect Addressing)

Like indirect PSP Modes 1 and 2, the indirect PSP Modes 5 and 6 have the ENC624J600

Address Line 8 connected to RD11/PMPCS1 instead of RF5/PMA8/U2TX to allow the

UART2 module to be used concurrently.

Of all possible parallel combinations, PSP Modes 5 and 6, with indirect addressing, use the

least I/O pins, but still provide very respectable performance. With minimal I/O pins used, it

is the least likely combination to have multiplexed board and processor features causing

unexpected behavior. It, therefore, should be the starting point when evaluating the

ENC624J600 device’s parallel interface for the first time. When using PSP Modes 5 and 6,

the ENC624J600 behavior is representative of the lower pin count ENC424J600, which only

supports SPI and PSP Modes 5 and 6.

Signal Name

Function

ENC624J600

Explorer 16 and

PIC32 I/O Exp.

84 AL RB15/PMPA0 Address Latch 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 AD8 RD11/PMPCS1 Address<8> from PIC MCU

109-116 AD0-AD7 RE0/PMPD0-

RE7/PMPD7

Address<0:7> from PIC MCU and

Bidirectional Data<0:7>

Note 1: PSP Mode 5.

2: PSP Mode 6.