Datasheet

ENC424J600/624J600
DS39935C-page 54  2010 Microchip Technology Inc.
FIGURE 5-1: DEVICE CONNECTIONS FOR PSP MODE 1
FIGURE 5-2: MODE 1 READ OPERATION TIMING (TWO BYTES)
FIGURE 5-3: MODE 1 WRITE OPERATION TIMING (TWO BYTES)
Host MCU ENC624J600
CS
(1)
RD
100 k
WR
A<14:9>
(2)
A<8:0>
AD<7:0>
INT
/SPISEL
PMCSx
PMRD
PMWR
PMA<14:9>
PMA<8:0>
PMD<7:0>
INTx
(3)
6
9
8
PSPCFG2
PSPCFG3
PSPCFG4
Note 1: Use of the CS strobe from the controller is optional. If not used, tie CS to V
DD.
2: Connect these pins when direct addressing of the entire SRAM buffer is required. Tie to V
DD when only indirect
addressing is desired.
3: Use of the external interrupt signal to the controller is optional.
CS
RD
A<14:0>
AD<7:0>
Data<7:0>Hi-Z Hi-Z
Address<14:0> Address<14:0>
Data<7:0> Hi-Z
WR
T
PSP1
T
PSP2
T
PSP4
T
PSP3
T
PSP6
CS
RD
A<14:0>
AD<7:0>
Data<7:0>Hi-Z
Address<14:0> Address<14:0>
Data<7:0> Hi-Z
WR
T
PSP8
T
PSP9
T
PSP11
T
PSP7
T
PSP10
T
PSP5