mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 392

• Manufacturer Part Number: mc9s12hz256v2
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 13 Serial Communication Interface (SCIV4)
13.3.2.1
Read: anytime
392
SBR[11:8]
TNP[1:0]
SBR[7:0]
Reset
Reset
Field
IREN
Field
6:5
4:0
7:0
7
W
W
R
R
SBR7
IREN
Infrared Enable Bit — This bit enables/disables the infrared modulation/demodulation submodule.
0 IR disabled
1 IR enabled
Transmitter Narrow Pulse Bits — These bits determine if the SCI will transmit a 1/16, 3/16, 1/32, or 1/4 narrow
pulse. Refer to
SCI Baud Rate Bits — The baud rate for the SCI is determined by the bits in this register. The baud rate is
calculated two different ways depending on the state of the IREN bit.
The formulas for calculating the baud rate are:
SCI Baud Rate Bits — The baud rate for the SCI is determined by the bits in this register. The baud rate is
calculated two different ways depending on the state of the IREN bit.
The formulas for calculating the baud rate are:
SCI Baud Rate Registers (SCIBDH and SCIBDL)
0
0
7
7
When IREN = 0 then,
When IREN = 1 then,
When IREN = 0 then,
When IREN = 1 then,
SCI baud rate = SCI module clock / (16 x SBR[12:0])
SCI baud rate = SCI module clock / (32 x SBR[12:1])
SCI baud rate = SCI module clock / (16 x SBR[12:0])
SCI baud rate = SCI module clock / (32 x SBR[12:1])
TNP1
SBR6
Table
0
0
6
6
Figure 13-3. SCI Baud Rate Register High (SCIBDH)
Figure 13-4. SCI Baud Rate Register Low (SCIBDL)
13-3.
Table 13-1. SCIBDH Field Descriptions
Table 13-2. SCIBDL Field Descriptions
TNP0
SBR5
MC9S12HZ256 Data Sheet, Rev. 2.05
0
0
5
5
SBR12
SBR4
0
0
4
4
Description
Description
SBR11
SBR3
0
0
3
3
SBR10
SBR2
0
1
2
2
Freescale Semiconductor
SBR9
SBR1
0
0
1
1
SBR8
SBR0
0
0
0
0