Renesas R8C/15 Informations techniques Page 162

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 279
  • Table des matières
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 161
R8C/14 Group, R8C/15 Group 15. Clock Synchronous Serial I/O with Chip Select (SSU)
Rev.2.10 Jan 19, 2006 Page 148 of 253
REJ09B0164-0210
Figure 15.8 SSTDR and SSRDR Register
SS Transmit Data Register
(2)
Symbol Address After Reset
SSTDR
00BEh FFh
RW
NOTES :
1.
2.
When setting to the slave device, do not transmit continuously.
Refer to
20.6.1 Access Registers Associated with SSU
for accessing registers associated with SSU.
RW
Function
Store the transmit data.
The stored transmit data is transferred to the SSTRSR register and the transmit is started
when detecting the SSTRSR register is empty.
When the next transmit data is w ritten to the SSTDR register during the data transmit from the
SSTRSR register, the data can be transmitted continuously.
(1)
When the MLS bit in the SSMR register is set to “1” (transfer data with LSB-first), the data in
which MSB and LSB are reversed can be read, after w riting to the SSTDR register.
b0b7 b6 b5 b4 b3 b2 b1
SS Receive Data Register
(2)
Symbol Address After Reset
SSRDR
00BFh FFh
RW
NOTES :
1.
2. Refer to
20.6.1 Access Registers Associated with SSU
for accessing registers associated with SSU.
b7 b6 b5 b4 b3 b2 b1 b0
The SSRDR register maintains the receive data before the overrun error occurs w hen the ORER bit in the SSSR
register is set to “1” (overrun error occurs). When an overrun error occurs, the receive data may contain errors and
therefore, should be discarded.
Store the receive data.
(1)
The receive data is transferred to the SSRDR register and the receive operation is completed
when receiving 1-byte data to the SSTRSR register. At this time, the follow ing receive is
possible. The continuous receive is possible by the SSTRSR and SSRDR registers.
RO
Function
Vue de la page 161
1 2 ... 157 158 159 160 161 162 163 164 165 166 167 ... 278 279

Commentaires sur ces manuels

Pas de commentaire