SMJ320C6701 Datasheet, PDF (10/62 Pages) Texas Instruments – FLOATING-POINT DIGITAL SIGNAL PROCESSOR

SMJ320C6701
FLOATING-POINT DIGITAL SIGNAL PROCESSOR
SGUS030 – APRIL 2000
Signal Descriptions (Continued)
SIGNAL
NAME
NO.
TYPE†
DESCRIPTION
EMIF – CONTROL SIGNALS COMMON TO ALL TYPES OF MEMORY
CE3
Y5
O/Z
CE2
V3
O/Z Memory space enables
CE1
T6
O/Z • Enabled by bits 24 and 25 of the word address
CE0
U2
O/Z • Only one asserted during any external data access
BE3
R8
O/Z Byte enable control
BE2
T3
O/Z • Decoded from the two lowest bits of the internal address
BE1
T2
O/Z • Byte write enables for most types of memory
BE0
R2
O/Z • Can be directly connected to SDRAM read and write mask signal (SDQM)
EMIF – ADDRESS
EA21
L4
EA20
L3
EA19
J2
EA18
J1
EA17
K1
EA16
K2
EA15
L2
EA14
L1
EA13
M1
EA12
EA11
M2
O/Z External address (word address)
M6
EA10
N4
EA9
N1
EA8
N2
EA7
N6
EA6
P4
EA5
P3
EA4
P2
EA3
P1
EA2
P6
† _{I = Input, O = Output, Z = High Impedance, S = Supply Voltage, GND = Ground}
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