s908gr32ag3vfa Freescale Semiconductor, Inc, s908gr32ag3vfa Datasheet - Page 175

• Manufacturer Part Number: s908gr32ag3vfa
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

SCP1 and SCP0 — ESCI Baud Rate Register Prescaler Bits
SCR2–SCR0 — ESCI Baud Rate Select Bits
13.8.8 ESCI Prescaler Register
The ESCI prescaler register (SCPSC) together with the ESCI baud rate register selects the baud rate for
both the receiver and the transmitter.
Freescale Semiconductor
These read/write bits select the baud rate register prescaler divisor as shown in
clears SCP1 and SCP0.
These read/write bits select the ESCI baud rate divisor as shown in
SCR2–SCR0.
Address:
There are two prescalers available to adjust the baud rate. One in the ESCI
baud rate register and one in the ESCI prescaler register.
Reset:
Read:
Write:
MC68HC908GR60A • MC68HC908GR48A • MC68HC908GR32A Data Sheet, Rev. 5
$0009
PDS2
Bit 7
0
Figure 13-18. ESCI Prescaler Register (SCPSC)
SCP[1:0]
SCR[2:1:0]
0 0
0 1
1 0
1 1
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
Table 13-7. ESCI Baud Rate Prescaling
Table 13-8. ESCI Baud Rate Selection
PDS1
6
0
PDS0
5
0
NOTE
PSSB4
Prescaler Divisor (BPD)
4
0
;
Baud Rate Divisor (BD)
Baud Rate Register
PSSB3
13
1
3
4
3
0
128
16
32
64
1
2
4
8
PSSB2
2
0
Table
PSSB1
13-8. Reset clears
1
0
Table
PSSB0
Bit 0
0
13-7. Reset
I/O Registers
175