Texas Instruments OMAP36 Series, Technical Reference Manual

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UART/IrDA/CIR Register Manual
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Bits Field Name Description Type Reset
0x0: Event is not allowed to wake up the system.
0x1: Event can wake up the system.
1 RESERVED Read returns 1. Must be set to 1 for correct behavior. RW 1
0 EVENT_0_CTS_ ACTIVITY UART mode only RW 1
0x0: Event is not allowed to wake up the system.
0x1: Event can wake up the system.
Table 19-118. Register Call Summary for Register WER_REG
UART/IrDA/CIR Functional Description
• Register Access Modes : [0] [1] [2] [3] [4] [5]
• UART/IrDA (SIR, MIR, FIR)/CIR Mode Selection : [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23]
• UART Mode Power Management : [24]
UART/IrDA/CIR Register Manual
• UART/IrDA/CIR Register Summary : [25] [26]
Table 19-119. CFPS_REG
Address Offset 0x060
Physical Address
See Table 19-39 to Table 19-40
Description Carrier frequency prescaler
Type RW
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RESERVED CFPS
Bits Field Name Description Type Reset
31:8 Reserved Read returns 0. R 0x000000
7:0 CFPS Because the consumer IR works at modulation rates of 30-56.8 kHz, the RW 0x69
48-MHz clock must be prescaled before the clock can drive the IR logic. This
register sets the divisor rate to give a range to accommodate remote-control
requirements in BAUD multiples of 12x. The value of the CFPS at reset is
0105 (decimal), which equates to a 38.1-kHz output from starting conditions.
The 48-MHz carrier is prescaled by the CFPS, which is then divided by the 12x
BAUD multiple.
Example:
Target Freq (kHz) CFPS (decimal) Actual Freq(kHz)
30 133 30.08
32.75 122 32.79
36 111 36.04
36.7 109 36.69
38 105 38.1
40 100 40
56.8 70 57.14
CFPS = 0 is not supported.
Table 19-120. Register Call Summary for Register CFPS_REG
UART/IrDA/CIR Functional Description
• Register Access Modes : [0] [1] [2] [3] [4] [5]
• UART/IrDA (SIR, MIR, FIR)/CIR Mode Selection : [6] [7] [8] [9] [10] [11]
• CIR Mode (UART3 Only) : [12] [13] [14]
UART/IrDA/CIR Register Manual
• UART/IrDA/CIR Register Summary : [15] [16]
2970UART/IrDA/CIR SWPU177N – December 2009 – Revised November 2010
Copyright © 2009–2010, Texas Instruments Incorporated