PC87109VBE Nuvoton Technology Corporation of America, PC87109VBE Datasheet - Page 41

• Manufacturer Part Number: PC87109VBE
• Description: IC CONTROLLER ADV UART 32-LQFP
• Manufacturer: Nuvoton Technology Corporation of America

Specifications of PC87109VBE

• Features: Transmit Deferral
• Number Of Channels: 2, DUART
• Fifo's: 16 Byte
• Voltage - Supply: 5V
• With Irda Encoder/decoder: Yes
• With False Start Bit Detection: Yes
• With Modem Control: Yes
• Mounting Type: Surface Mount
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: *PC87109VBE

B1-0
B2
B3
B4
B5
B6
B7
3.8.4 LCR/BSR - Link Control/Bank Select Registers
These registers are the same as in bank 0.
3.8.5 IRCFG1, 4 - Infrared Interface Configuration Registers
Two registers are provided to configure the infrared interface. These registers are used to select the infrared receiver inputs as
well as the transceiver operational mode. Selection of the transceiver mode is accomplished by up to two special output signals
(ID/IRSL [1-0]). When these signals are programmed as outputs, they will be forced low when the UART mode is selected.
3.8.5.1 IRCFG1 - Infrared Interface Configuration Register 1
This register is used to directly control the transceiver operational mode. It is also used to read the identification data of a
infrared adapter.
Bits
Function
Reset State
RC_MMD [1-0] - Transmitter Modulation Mode.
Determines how infrared pulses are generated from the transmitted bit string.
TXHSC - Transmitter Sub-carrier Frequency Select.
Selects the frequency range for the modulation carrier.
Reserved.
Write 0.
RCDM_DS - Receiver Demodulation Disable.
When this bit is 1, the internal demodulator is disabled. The internal demodulator, when enabled, performs carrier
frequency checking and envelope generation.
It must be disabled when demodulation is done externally, or when over-sampling mode is used to determine the
carrier frequency.
RXHSC - Receiver Carrier Frequency Select.
Selects the frequency range for the receiver demodulator.
T_OV - Receiver Sampling Mode.
R_LEN - Run-Length Control.
When set to 1, run-length encoding/decoding is enabled.
The format of a run-length code is YXXXXXXX, where:
XXXXXXX - Number of bits minus 1.
Y - Bit value
00 =>
01 =>
10 =>
11 =>
0
1
1
0
0
1
=> 30 - 56.9 kHz
=> 400 - 480 kHz
=> 400 - 480 kHz
=> Programmed-T-period sampling.
=> 30 - 56.9 kHz
=> Over-sampling Mode.
STRV_MS
C_PLS Modulation Mode.
Pulses are generated continuously for the entire logic 0 bit time
8_PLS Modulation Mode.
8 pulses are generated each time one or more logic 0 bits are transmitted following logic 1 bit.
6_PLS Modulation Mode.
6 pulses are generated each time one or more logic 0 bits are transmitted following logic 1 bit.
Reserved.
Result is indeterminate.
(Selects 1 to 128 bits).
B7
0
res
B6
0
Figure 3-26. Infrared Configuration Register 1
Res
B5
0
41
res
B4
0
res
B3
0
res
B2
0
IRIC1
B1
X
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IRIC0
B0
X