SMJ320C26B Datasheet, PDF (2/40 Pages) Texas Instruments – DIGITAL SIGNAL PROCESSOR

SMJ320C26
DIGITAL SIGNAL PROCESSOR
SGUS 016A – AUGUST 1990 – REVISED AUGUST 2001
description
With a 100-ns instruction cycle time and an
innovative memory configuration, the
SMJ320C26 performs operations necessary for
many real time digital signal processing algo-
rithms. Since most instructions require only one
cycle, the SMJ320C26 is capable of executing ten
million instructions per second. On-chip program-
mable data/program RAM of 1568 words of 16
bits, on-chip program ROM of 256-words, direct
addressing of up to 64K-words of external
program and 64K-words of data memory space,
and multiprocessor interface features for sharing
global memory minimize unnecessary data
transfers to take full advantage of the capabilities
of the processor.
The SMJ320C26 scaling shifter has a 16-bit input
connected to the data bus and a 32-bit output
connected to the ALU. The scaling shifter
produces a left shift of 0 to 16 bits on the input
data, as programmed in the instruction. The LSBs
of the output are filled with zeroes, and the MSBs
may be either filled with zeroes or sign-extended,
depending upon the status programmed into the
SXM (sign-extension mode) bit of status register
ST1.
68-PIN FJ AND FD
LEADED AND LEADLESS
CERAMIC CHIP CARRIER PACKAGES^†
(TOP VIEW)
VSS
D7
D6
D5
D4
D3
D2
D1
D0
SYNC
INT0
INT1
INT2
VCC
DR
FSR
A0
9 8 7 6 5 4 3 2 1 68 67 66 65 64 63 62 61
10
60
11
59
12
58
13
57
14
56
15
55
16
54
17
53
18
52
19
51
20
50
21
49
22
48
23
47
24
46
25
45
26
44
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
IACK
MSC
CLKOUT1
CLKOUT2
XF
HOLDA
DX
FSX
X2/CLKIN
X1
BR
STRB
R/W
PS
IS
DS
VSS
† _{See Pin Assignments Table (Page 2) and Pin}
Nomenclature Table (Page 3) for location and
description of all pins.
PGA/LCCC/JLCC PIN ASSIGNMENTS
FUNCTION
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
PIN
K1/26
K2/28
L3/29
K3/30
L4/31
K4/32
L5/33
K5/34
K6/36
L7/37
K7/38
L8/39
FUNCTION
A12
A13
A14
A15
BIO
BR
CLKOUT1
CLKOUT2
CLKR
CLKX
D0
D1
PIN
K8/40
L9/41
K9/42
L10/43
B7/68
G11/50
C11/58
D10/57
B9/64
A9/63
F1/18
E2/17
FUNCTION
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
PIN
E1/16
D2/15
D1/14
C2/13
C1/12
B2/11
A2/9
B3/8
A3/7
B4/6
A4/5
B5/4
FUNCTION
D14
D15
DR
DS
DX
FSR
FSX
HOLD
HOLDA
IACK
INT0
INT1
PIN
A5/3
B6/2
J1/24
K10/45
E11/54
J2/25
F10/53
A7/67
E10/55
B11/60
G1/20
G2/21
FUNCTION
INT2
IS
MP/MC
MSC
PS
READY
RS
R/W
STRB
SYNC
VCC
VCC
PIN
H1/22
J11/46
A6/1
C10/59
J10/47
B8/66
A8/65
H11/48
H10/49
F2/19
A10/61
B10/62
FUNCTION
VCC
VCC
VSS
VSS
VSS
XF
X1
X2/CLKIN
PIN
H2/23
L6/35
B1/10
K11/44
L2/27
D11/56
G10/51
F11/52
2
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