Samsung SF-530 Series, Руководство по обслуживанию

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3-3
Samsung Electronics
CIRCUIT DESCRIPTION
Repair Manual
• KS32C65100 MICROPROCESSOR
1) KS32C65100 MICROPROCESSOR PIN & INTERFACE
Signal Pin No. I/O Type Description
OSCI 184 I7 KS32C65100 master clock input.
OSCO 185 O7 KS32C65100 master clock output.
PLL_FILTER 183 I5 PLL filter
nRESET 182 I4
Not reset. nRESET is the global reset input for the
KS32C65100. For a system reset, nRESET must be held to
low level for at least 65 machine cycles.
nSLCTIN/GIP[16] 152 I1
Not select information. This input signal is used by parallel
port interface to request 'on-line' status information.
nSTROBE 151 I1
Not strobe. The nSTROBE input indicates when valid data is
on parallel port data bus, PPD[7:0]
nAUTOFD/GIP[17] 154 I1
Not auto feed. The nAUTOFD input indicates whether data
on the parallel port data bus, PPD[7:0], is an auto feed
command. Otherwise, the bus signals are interpreted as data
only.
nINIT/GIP[15] 153 I1
Not initialization. The nINIT input signal initializes the parallel
port's input control.
nACK 159 I1
Not parallel port acknowledge. The nACK output signal is
issued whenever a transfer on the parallel port data bus is
completed.
BUSY 158 O1
Parallel port busy. The BUSY output signal indicates that the
KS32C65100 parallel port is currently busy.
SELECT 156 O1
Parallel port select. The SELECT output signal indicates
whether the device connected to the KS32C65100 parallel
port is 'on-line' or 'off-line'.
PERROR 157 O1
Parallel port paper error. PERROR output indicates that a
problem exists with the paper in the ink-jet printer. It could
indicate that the printer has a paper jam or that the printer
is out of paper.
nFAULT 155 O1
Not fault. The nFAULT output indicates that an error
condition exists with the printer. This signal can be used to
indicate that the printer is out of ink or to inform the user
that the printer is not turned on.
PPD[7:0] 142~149 I/O2
arallel port data bus. This 8-bit, tri-state bus is used to
exchange data between the KS32C65100 and an external
host(peripheral).
SAVRT 2 I6 Top reference voltage for IP ADC
SAIN 3 I6 Analog input for IP ADC
SAVRB 4 I6 Bottom reference voltage for IP ADC