dp8344b National Semiconductor Corporation, dp8344b Datasheet - Page 152
dp8344b
Manufacturer Part Number
dp8344b
Description
Biphase Communications Processor?bcp
Manufacturer
National Semiconductor Corporation
Datasheet
1.DP8344B.pdf
(184 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
dp8344bV
Manufacturer:
NSC
Quantity:
5 510
Part Number:
dp8344bV
Manufacturer:
NS/国半
Quantity:
20 000
- Current page: 152 of 184
- Download datasheet (3Mb)
6 0 Reference Section
SBCA Subtract with Carry and
Syntax
SBCA Rs Rd
SBCA Rs mIr
Affected Flags
N Z C V
Description
Subtracts the active accumulator and the carry flag from the
source register Rs placing the result into the destination
specified The destination may be either a register Rd or
data memory via an index register mode
results are represented using the two’s complement format
Note that register bank selection determines which accumu-
lator is active
Example
Subtract the constant 109 from the index register IW (which
is 16 bits wide)
Instruction Format
SBCA Rs Rd
T-states
SBCA Rs Rd
SBCA Rs mIr
Bus Timing
SBCA Rs Rd
SBCA Rs mIr
Operation
SBCA Rs Rd
Rs
SBCA Rs mIr
Rs
SBCA Rs mIr
1
15
SUBA A A
SUB
SBCA R13 R13
b
b
1
accumulator
accumulator
Opcode
1
109 R12
Accumulator
0
1
b
b
1
carry bit
carry bit
9
Figure 6-1
Figure 6-7
2
3
Clear the accumulator
low byte of IW 109
high byte of IW borrow
register register
register indexed
Rd
x
x
Rd
data memory
(Continued)
4
mIr
Rs
TL F9336 – 13
Negative
0
152
Figure 6-1
SHL Shift Left
Syntax
SHL Rsd b
Affected Flags
N Z C
Description
Shifts the contents of the register Rsd b bits to the left and
places the result back into that register Zeros are shifted in
from the right (i e from the LSB) The value b may specify
from 0 to 7 bit shifts The Carry flag contains the last bit
shifted out
Example
Place a new internal Address Stack Pointer into the Internal
Stack Pointer register ISP
Instruction Format
T-states
2
Bus Timing
Operation
ASP is located in register 20
1
15
MOVE ISP R8
AND
SHL
ORA
1
0
00001111B R8
R20 4
R20 ISP
Opcode
0
1
0
0
register
1
read ISP for DSP
save DSP only
left justify ASP
combine ASP
then place into ISP
R30 Assume that the new
7
(8-b)
4
a
Rsd
TL F 9336 – 14
DSP
0
Related parts for dp8344b
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Freescale Semiconductor Technical Data
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Self-calibrating 12-bit Plus Sign Serial I/o A/d Converters With Mux And Sample/hold
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Pllatinum Tm Fractional N Rf / Integer N If Dual Low Power Frequency Synthesizer
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Pllatinum? 2.0 Ghz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Pllatinumtm 160 Mhz Frequency Synthesizer For Rf Personal Communications
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Dual N-channel Enhancement Mode Field Effect Transistor
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Video Amplifier System (obsolete)
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Synchronous Step-up DC/DC Converter For White Led Applications
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
CLC420 - High Speed, Voltage Feedback op Amp, Package: Lcc, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Monolithic Triple 4.5 CRT Driver
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Differential Video Amplifier
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
ADC10061 - 10-Bit 600 NS A/D Converter With Input Multiplexer And Sample/Hold, Package: Soic Wide, Pin Nb=20
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
DS36277 - Dominant Mode Multipoint Transceiver, Package: Soic Narrow, Pin Nb=8
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Printer Solenoid Driver
Manufacturer:
National Semiconductor Corporation
Datasheet:
Part Number:
Description:
Quad High Speed Trapezoidal Bus Transceiver
Manufacturer:
National Semiconductor Corporation
Datasheet: