Datasheet

DS2148/DS21Q48
55 of 73
8 DS21Q48 QUAD LIU
The DS21Q48 is a quad version of the DS2148G utilizing CSBGA on carrier packaging technology. The
four LIUs are controlled via the parallel port mode. Serial and hardware modes are unavailable in this
package.
Table 8-1. DS21Q48 Pin Assignment
DS21Q48
PIN#
I/O
PARALLEL PORT
MODE
J1 I Connect to V
SS
K3 I Connect to V
SS
J2 I
RD(DS)
H1 I
WR(R/W)
K2 I ALE(AS)
K1 I/O A4
L1 I A3
H11 I A2
H12 I A1
G12 I A0
J10 I/O D7/AD7
H10 I/O D6/AD6
G11 I/O D5/AD5
J9 I/O D4/AD4
E3 I/O D3/AD3
D4 I/O D2/AD2
F3 I/O D1/AD1
D5 I/O D0/AD0
G4 I VSM
K9 I/O
INT
K7 I TEST
L9 I
HRST
J6 I MCLK
L7 I BIS0
M8 I BIS1
M12 I PBTS
J3 I
CS1
D3 I
CS2
D10 I
CS3
K10 I
CS4
K5 O PBEO1
G3 O PBEO2
E10 O PBEO3
K8 O PBEO4
L6 O RCL/LOTC1
D7 O RCL/LOTC2
F9 O RCL/LOTC3