The PICtail Daughter Board has the WRL/B0SEL signal connected to WRH/B1SEL, so only
16-bit word writes are possible. Writes to the high or low byte, individually, cannot be
performed.
When jumpered for indirect addressing (PMA to A is open), the ENC624J600 PSP
connections simplify to the following:
Interface Signal Connections for PSP Modes 3 and 4 (Indirect Addressing)
Signal Name
J1
Pin
27
28
29
30
33
35
37
39
45
46
83
84
ENC624J600
AD8
AD11
AD9
AD10
A2
A5
A4
A3
A7
A6
A1
A0
Explorer 16 and
PIC32 I/O Exp.
RG0 (PMPD8)
RF0 (PMPD11)
RG1 (PMPD9)
RF1 (PMPD10)
RG9/PMPA2/SS2
RG6/PMPA5/SCK2
RG7/PMPA4/SDI2
RG8/PMPA3/SDO2
RA9/PMPA7
RA10/PMPA6
RB14/PMPA1
RB15/PMPA0
Function
Bidirectional Data<8>
Bidirectional Data<11>
Bidirectional Data<9>
Bidirectional Data<10>
Address<2> from PIC ? MCU
Address<5> from PIC MCU
Address<4> from PIC MCU
Address<3> from PIC MCU
Address<7> from PIC MCU
Address<6> from PIC MCU
Address<1> from PIC MCU
Address<0> from PIC MCU
WRL & WRH
97
(1)
or
RD4/PMPWR
16-Bit Write (1) or Both Byte Select (2)
B0SEL & B1SEL (2)
Strobes from PIC MCU
98
RD (1) or R/W (2)
RD5/PMPRD
16-Bit Read Strobe (1) or Read/Write (2)
Select from PIC MCU
99
100
105
106
AD14
AD15
AD12
AD13
RD6 (PMPD14)
RD7 (PMPD15)
RD12 (PMPD12)
RD13 (PMPD13)
Bidirectional Data<14>
Bidirectional Data<15>
Bidirectional Data<12>
Bidirectional Data<13>
109-116 AD0-AD7
Note 1:
PSP Mode 3.
2:
PSP Mode 4.
RE0/PMPD0-
RE7/PMPD7
Bidirectional Data<0:7>
11
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