UPD78F1502AGK-GAK-AX Datasheet, PDF (540/1031 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcontrollers

78K0R/Lx3
CHAPTER 14 SERIAL ARRAY UNIT
(1) Register setting
Figure 14-68. Example of Contents of Registers for UART Transmission of UART
(UART0, UART1, UART2, UART3) (1/2)
(a) Serial output register m (SOm) … Sets only the bits of the target channel to 1.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SOm
CKOm2 CKOm1 CKOm0
SOm2 SOm1 SOm0
0
0
0
0
1
×
×
×
0
0
0
0
1 0/1^Note × 0/1^Note
(b) Serial output enable register m (SOEm) … Sets only the bits of the target channel to 1.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SOEm
SOEm2 SOEm1 SOEm0
0 0 0 0 0 0 0 0 0 0 0 0 0 0/1 × 0/1
(c) Serial channel start register m (SSm) … Sets only the bits of the target channel to 1.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SSm
SSm3 SSm2 SSm1 SSm0
0 0 0 0 0 0 0 0 0 0 0 0 × 0/1 × 0/1
(d) Serial output level register m (SOLm) … Sets only the bits of the target channel.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SOLm
SOLm2
SOLm0
0 0 0 0 0 0 0 0 0 0 0 0 0 0/1 0 0/1
0: Forward (normal) transmission
1: Reverse transmission
(e) Serial mode register mn (SMRmn)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SMRmn CKSmn CCSmn
STSmn
SISmn0
MDmn2 MDmn1 MDmn0
0/1 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0/1
Operation mode of channel n
0: Transfer end interrupt
1: Buffer empty interrupt
Note Before transmission is started, be sure to set to 1 when the SOLmn bit of the target channel is set to 0, and
set to 0 when the SOLmn bit of the target channel is set to 1. The value varies depending on the
communication data during communication operation.
Remark
m: Unit number (m = 0, 1), n: Channel number (n = 0, 2), q: UART number (q = 0 to 3)
: Setting is fixed in the UART transmission mode, : Setting disabled (fixed by hardware)
×: Bit that cannot be used in this mode (set to the initial value when not used in any mode)
0/1: Set to 0 or 1 depending on the usage of the user
R01UH0004EJ0501 Rev.5.01
524
Jun 20, 2011