NEC V850ES/KE1+ User Manual page 440

(4) Clocked serial interface read-only receive buffer registers n, nL (SIRBEn, SIRBEnL)
The SIRBEn register is a 16-bit buffer register that stores receive data.
The SIRBEn register is the same as the SIRBn register. Even if the SIRBEn register is read, the next
operation will not start. The SIRBEn register is used to read the contents of the SIRBn register when the
serial reception is not continued.
This register is read-only in 16-bit units. However, when the lower 8 bits are used as the SIRBEnL register,
the register is read-only in 8-bit units.
In addition to reset input, this register is also cleared to 0000H by clearing (0) the CSIM0n.CSI0En bit.
Cautions 1. The receive operation is not started even if data is read from the SIRBEn and SIRBEnL
registers.
2. The SIRBEn register can be read only if a 16-bit data length has been set (CSIM0n.CCLn
bit = 1).
The SIRBEnL register can be read only if an 8-bit data length has been set (CCLn bit = 0).
(a) SIRBEn register
After reset: 0000H
15
SIRBEn SIRBEn
(n = 0, 1) 15
(b) SIRBEnL register
After reset: 00H
SIRBEnL SIRBEn7
(n = 0, 1)
440
CHAPTER 15 CLOCKED SERIAL INTERFACE 0 (CSI0)
R Address: SIRBE0 FFFFFD06H, SIRBE1 FFFFFD16H
14 13 12 11 10
SIRBEn SIRBEn SIRBEn SIRBEn SIRBEn
14 13 12 11 10
R Address: SIRBE0L FFFFFD06H, SIRBE1L FFFFFD16H
7 6 5
SIRBEn6 SIRBEn5 SIRBEn4
User's Manual U16896EJ2V0UD
9 8 7 6 5
SIRBEn SIRBEn SIRBEn SIRBEn SIRBEn
9 8 7 6 5
4 3 2
SIRBEn3 SIRBEn2 SIRBEn1
4 3 2 1 0
SIRBEn SIRBEn SIRBEn SIRBEn SIRBEn
4 3 2 1 0
1 0
SIRBEn0