18 UART
222
EPSON
S1C17001 TECHNICAL MANUAL
IrDA receive detection clock selection
The input pulse detection clock is selected from among the prescaler output clock PCLK-1/1 to PCLK-1/128
using IRCLK[2:0] (D[6:4]/UART_EXP register)
∗
IRCLK[2:0]
: IrDA Receive Detection Clock Select Bits in the UART Expansion (UART_EXP) Register
(D[6:4]/0x4105)
Table 18.8.1: IrDA receive detection clock selection
IRCLK[2:0]
Prescaler output clock
0x7
PCLK-1/128
0x6
PCLK-1/64
0x5
PCLK-1/32
0x4
PCLK-1/16
0x3
PCLK-1/8
0x2
PCLK-1/4
0x1
PCLK-1/2
0x0
PCLK-1/1
(Default: 0x0)
This clock must be selected as a clock faster than the 8-bit timer or transfer clock sclk input via the SCLK pin.
The demodulation circuit treats Low pulses with a width of at least 2 IrDA receive detection clock cycles as
valid and converts them to 16 sclk cycle width Low pulses. Select the prescaler output clock to enable detection
of input pulses with a minimum width of 1.41
μ
s.
Serial data transfer control
Data transfer control in IrDA mode is identical to that for normal interfaces. For detailed information on data
format settings and data transfer and interrupt control methods, refer to the previous discussions.
Summary of Contents for S1C17001
Page 1: ...Technical Manual S1C17001 CMOS 16 BIT SINGLE CHIP MICROCONTROLLER ...
Page 33: ...4 POWER SUPPLY VOLTAGE 24 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 63: ...6 INITERRUPT CONTROLLER 54 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 87: ...8 CLOCK GENERATOR CLG 78 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 91: ...9 PRESCALER PSC 82 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 133: ...11 16 BIT TIMER T16 124 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 211: ...16 STOPWATCH TIMER SWT 202 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 219: ...17 WATCHDOG TIMER WDT 210 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 241: ...18 UART 232 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 277: ...20 I2 C 268 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...
Page 313: ...25 PACKAGE 304 EPSON S1C17001 TECHNICAL MANUAL This page intentionally left blank ...