mpc823rg Freescale Semiconductor, Inc, mpc823rg Datasheet - Page 737

• Manufacturer Part Number: mpc823rg
• Description: Mpc823 Powerquicc Integrated Communications Processor For Portable Systems
• Manufacturer: Freescale Semiconductor, Inc

16.9.20.1 LOW-SPEED IRDA PROTOCOL. The low-speed IrDA protocol consists of a
data link layer and a physical layer.
• The data link layer is based on a preexisting ASYNC HDLC protocol standard. See
• The physical layer defines the electrical parameters of the signals between the
Section 16.9.19 The SCCx in Asynchronous HDLC Mode for more details. 0xC0 is
used as a start flag and 0xC1 is used as an end flag. Each character is compromised
out of a start bit, 8 data bits, no parity bit and ending with a stop bit, as shown in
Figure 16-92.
encoder/decoder module and the infrared transducer module. The signal waveform is
shown in Figure 16-92. For all signaling rates up to and including 115.2Kb/s, the
minimum pulse duration is the same—
(minus a protocol-defined tolerance). The maximum pulse duration is
duration (plus a protocol-defined tolerance).
(A)
(B)
START
0
BIT
Figure 16-92. Low-Speed IrDA Data Format
Freescale Semiconductor, Inc.
1
For More Information On This Product,
0
MPC823 REFERENCE MANUAL
Go to: www.freescale.com
1
DATA BITS
3
UART FRAME
INFRA - RED FRAME
0
/
16
of the bit duration for the 115.2Kb/s signal
0
1
3/16 BIT TIME
Communication Processor Module
1
0
3
/
16
STOP
BIT
1
of the bit
16-285