PXD20RM Datasheet, PDF (1007/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

Offset: 0x90
Access: User read/write
0
1
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7
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9
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13
14
15
R0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16
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20
21
22
23
24
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31
R0 0 0 0
W
PTO
Reset 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1
Figure 27-39. UART preset timeout register (UARTPTO)
Table 27-38. UARTPTO field descriptions
Field
PTO
Description
Preset value of the timeout counter
Do not set PTO = 0 (otherwise, UARTSR[TO] would immediately be set).
27.10.23 UART current timeout register (UARTCTO)
This register contains the current timeout value in UART mode, and is used in conjunction with the
UARTPTO register (see Section 27.10.22, UART preset timeout register (UARTPTO)) to monitor the
IDLE state of the reception line. UART timeout works in both CPU and DMA modes.
The timeout counter:
• Starts at zero and counts upward
• Is clocked with the baud rate clock prescaled by a hard-wired scaling factor of 16
• Is automatically enabled when UARTCR[RXEN] = 1
Offset: 0x94
Access: User read/write
0
1
2
3
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9
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15
R0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16
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22
23
24
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26
27
28
29
30
31
R0 0 0 0
CTO
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 27-40. UART current timeout register (UARTCTO)
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
27-51