NS9210B-0-I75 Datasheet, PDF (12/68 Pages) List of Unclassifed Manufacturers – Figure 1 shows the NS7520 modules. Dashed lines indicate shared pins

System Bus interface
Symbol
DATA19
DATA18
DATA17
DATA16
DATA15
DATA14
DATA13
DATA12
DATA11
DATA10
DATA9
DATA8
DATA7
DATA6
DATA5
DATA4
DATA3
DATA2
DATA1
DATA0
BE3_
BE2_
BE1_
BE0_
TS_
TA_
TEA_
8
Pin
I/O OD Description
H3
I/O
4
H4
I/O
4
H1
I/O
4
H2
I/O
4
G4
I/O
4
G1
I/O
4
G3
I/O
4
G2
I/O
4
F4
I/O
4
F2
I/O
4
F3
I/O
4
E1
I/O
4
E2
I/O
4
E3
I/O
4
D1
I/O
4
C1
I/O
4
B1
I/O
4
D4
I/O
4
D3
I/O
4
C2
I/O
4
D9
I/O
2
Byte enable D31:D24
A9
I/O
2
Byte enable D23:D16
C9
I/O
2
Byte enable D15:D08
B9
I/O
2
Byte enable D07:D00
A8
I/O
4
DO NOT USE
Add an external 820 ohm pullup to 3.3 V.
D8 U I/O
4
Data transfer acknowledge
Add an external 820 ohm pullup to 3.3 V.
TA_ is bidirectional. It is used in input mode to
terminate a memory cycle externally. It is used in
output mode for reference purposes only.
C8 U I/O
4
Data transfer error acknowledge
Add an external 820 ohm pullup to 3.3 V.
TEA_ is bidirectional. It is used in input mode to
terminate a memory cycle externally. It is used in
output mode for reference purposes only.
NS7520 Datasheet 03/2006