NS32FX100-15 Datasheet, PDF (64/94 Pages) National Semiconductor (TI) – System Controller

4 0 Device Specifications (Continued)
4 1 3 Output Signals (Continued)
Signal
SDIS DMAK2
SDOUT
SEL0
SEL1
SEL3
SLS
SMPH0 – 3
SOSCO
SPDW
STB0 – 3
WDT
WE0
WE1
Pin Numbers
27
20
108
110
107
21
70 69 68
67
63
23
35 34 31
30
60
113
112
Description
Discharge Output signal used by the scanner to prepare for the next pixel or DMA
Acknowledge Output for DMA channel 2 acknowledge or general purpose output
pin
Sigma-Delta Data Out Input to the SDC analog transmitter
Zone Select Used to address the device according to the selected zone
Scanner Line Sync Output signal used to indicate beginning of scan or general
purpose output pin
Scanner Motor Phases Four phase signals for driving the scanner motor
Low-Speed Oscillator Out Asynchronous This line is used as the return path for
the crystal (if used)
Peak Detector Window Output to the scanner ABC circuit or general purpose
output pin
Strobes Thermal print head strobes output or general purpose output pin
WATCHDOG Trap Traps CPU execution when WATCHDOG detects error
Write Enable Used by the addressed device to gate the data from the data bus
WE0 for even and WE1 for odd bytes
4 1 4 Input Output Signals
Signal
A16 – 23
AD0 – 15
ADS
Pin Numbers
7
8
9
10 12 13
14 15
120 121 122
123 124 126
127 128 129
130 132 1
2
3
4
6
118
DDIN
119
MWSO
47
PCLK DMRQ1
49
PIO0 – 1
54 53
SBYPS DMRQ2 48
SNH DMRQ0
52
UREN
45
UTXD
46
Description
High Order Address Bus The most significant eight bits of the CPU address bus
Output from the NS32FX100 during DMA cycles
Address Data bus Multiplexed address data information
Address Strobe Controls memory access and signals the beginning of a bus
cycle Output from the NS32FX100 during DMA cycles
Data Direction In Indicates the direction of data transfer during a bus cycle Output
from the NS32FX100 during DMA cycles
MICROWIRE Serial Out Serial output data for communication via the MICROWIRE
protocol or general purpose I O pin
Printer Bitmap Shift Clock Output from the internal clock or asynchronous input
from an external clock (NS32FX200 only) or input for DMA channel 1 request or
general purpose I O pin
General Purpose I O Pins
Scanner Pixel Bypass Input to pixel generator for external video enhancement
device (NS32FX200 only) or last sampled pixel output or DMA Request Input for
DMA channel 2 request or general purpose I O pin (SBYPS in NS32FX200 only )
Sample and Hold Output to scanner sample and hold circuit or DMA Request
input for DMA channel 0 request or general purpose I O pin
UART Receive Enable Output or general purpose I O pin
UART Transmit Output or general purpose I O pin
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