tmp1941af TOSHIBA Semiconductor CORPORATION, tmp1941af Datasheet - Page 222

• Manufacturer Part Number: tmp1941af
• Description: 32-bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

BR3ADD
(0xFFFF_F284)
BR3CR
(0xFFFF_F283)
Figure 13.19 SIO3 Baud Rate Generator Control Registers (BR3CR and BR3ADD)
Name
Read/Write
Reset Value
Function
Name
Read/Write
Reset Value
Function
Note 1: The baud rate generator divisor can not be set to 1 in UART mode if the N + (16 – K) / 16 clock
Note 2: To use the N + (16 – K) / 16 clock division function, the value of K must be programmed in the
Note 3: The N + (16 – K) / 16 clock division function can only be used in UART mode. In I/O Interface
BR3ADD. BR3K[3:0]
1111(K = 15)
0001(K = 1)
0000
division function is enabled. The divisor should be set to 2 or greater in I/O Interface mode.
BR0ADD.BR0K[3:0] field before setting BR0CR.BR0ADDE to 1. However, the N + (16 – K) / 16
clock division function is not usable when BR0CR.BR0S[3:0] = 0000 (N = 16) or 0001 (N = 1).
mode, this must be disabled by clearing BR0CR.BR0ADDE to 0.
thru
Must be
written as
0.
Clock divisor value for baud rate generator




7
7
0
0000 (N = 16)
0001 (N = 1)
N +
(16–K)/16
function
0: Disabled
1: Enabled
BR3ADDE
BR3CR.BR3ADDE = 1
Invalid
Invalid



6
6
or
0
Clock source for baud rate generator
TMP1941AF-182
00
01
10
11
00: φT0
01: φT2
10: φT8
11: φT32
BR3CK1
1111 (N = 15)
Divided by N
0010 (N = 2)
(16 – K) / 16
Internal clock φT0
Internal clock φT2
Internal clock φT8
Internal clock φT32



5
5
0
BR3CR. BR3S[3:0]
Invalid
thru
+
BR3CK0



4
4
0
0001 (N = 1) (Only UART)
1111 (N = 15)
0000 (N = 16)
Divided by N
BR3CR.BR3ADDE = 0
R/W
thru
Clock divisor value N
Value of K in N+(16–K)/16
BR3S3
BR3K3
3
3
0
0
BR3S2
BR3K2
2
2
0
0
TMP1941AF
R/W
BR3S1
BR3K1
1
1
0
0
2003-03-27
BR3S0
BR3K0
0
0
0
0