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NC
1
NC
3
DSDI
5
VF0
7
VF2
9
VFLS1 11
WP1~ 13
WP3~ 15
WP5~ 17
NC 19
NC
1
CLKOUT
3
TEA~
5
TA~
7
BE1~
9
BE3~ 11
R_W~ 13
AT0 15
BI~ 17
CSBT~ 19
2.3.7
SCSI
The EVB printed circuit board includes an optional SCSI port. The required parts for the SCSI
port are user supplied. SCSI port parts list is provided in Table 2-9.
Reference Designation
U1, U2
MPC505EVBUM/D
POD5
•
•
2
NC
•
•
4
DSCK
•
•
6
DSDO
•
•
8
VF1
•
•
10 VFLS0
•
•
12 WP0~
•
•
14 WP2~
•
•
16 WP4~
•
•
18 NC
•
•
20 GND
POD7
•
•
2
NC
•
•
4
BURST~
•
•
6
AACK~
•
•
8
BE0~
•
•
10 BE2~
•
•
12 BDIP~
•
•
14 TS~
•
•
16 AT1~
•
•
18 ARETRY~
•
•
20 GND
Table 2-9. SCSI Port Parts List
P1
SCSI Connector, AMP 749830-5
I.C., DS2107S, SCSI Terminator, DALLAS
Semiconductor
U3
I.C., 53C90B, SCSI Controller, NCR
HARDWARE PREPARATION AND INSTALLATION
POD6
•
NC
1
•
NC
3
•
RESET~
5
•
CT0
7
•
CT2
9
•
CR~ 11
•
BB~ 13
•
IRQ0~ 15
•
ECROUT 17
•
PDWU 19
Component Description
•
2
NC
•
4
CLKOUT
•
6
SRESET~
•
8
CT1
•
10 CT3
•
12 BR~
•
14 BG~
•
16 IRQ1~
•
18 MODCLK
•
20 GND
2-23
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