Renesas RL78/G1P Hardware User Manual page 331

RL78/G1P
Figure 11-1 shows the block diagram of the serial array unit 0.
0
Peripheral enable
register 0 (PER0)
PRS
SAU0EN
013
f
CLK
Channel 0
Serial clock I/O pin
(when CSI00: SCK00)
Synchro-
Edge
nous
detection
circuit
Output latch
PM32
(P32)
Synchro- Noise
elimination
Serial data input pin nous
enabled/
circuit
(when CSI00: SI00) disabled
(when UART0: RxD0)
SNFEN00
Slave select input pin
(when CSI00: SSI00)
TXE RXE
00 00
When UART0
Channel 1
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
Figure 11-1. Block Diagram of Serial Array Unit 0
Serial output register 0 (SO0)
0 0 0 0 0 0 CKO00
Serial clock select register 0 (SPS0)
PRS PRS PRS PRS PRS PRS PRS
012 011 010 003 002 001 000
4
4
Prescaler
f /2 0 to f /2 15 f /2 0 to f /2
CLK CLK CLK CLK
Selector Selector
Serial data register 00 (SDR00)
CK01 CK00
(Clock division setting block)
f
MCK
f
SCK
Edge/
level
detection
CKS00 CCS00 STS00 MD001
Edge
detection
Serial mode register 00 (SMR00)
Input switch control register (ISC)
SSIE00
DAP CKP EOC PTC PTC DIR SLC
00 00 00 001 000 00 001
Serial communication operation setting register 00 (SCR00)
CK01 CK00
Edge/level
detection
0 0
0 0 0 0
15
(Buffer register block)
f
TCLK
Shift register
Communication controller
Mode selection
CSI00
or UART0
(for transmission)
SLC DLS DLS TSF BFF
000 001 000 00 00
Serial status register 00 (SSR00)
Communication controller
UART0
(for reception)
CHAPTER 11 SERIAL ARRAY UNIT
Noise filter enable
register 0 (NFEN0)
0 SO00
SNFEN SNFEN
10 00
Serial channel
enable status
SE01 SE00
Serial standby
register 0 (SE0)
control register 0
Serial channel
(SSC0)
start register 0
SS01 SS00
(SS0)
SSEC0 SWC0
Serial channel
stop register 0
ST01 ST00
(ST0)
Serial output
SOE00 enable register 0
(SOE0)
Serial output level
SOL00
register 0 (OL0)
Output latch
(P30)
Output
controller
Interrupt
Serial transfer end interrupt
controller
(when CSI00: INTCSI00)
(when UART0: INTST0)
Serial flag clear trigger
register 00 (SIR00)
OVCT
PECT
00 00
Clear
Error
controller
Error
information
PEF OVF
00
00
Serial transfer end interrupt
(when UART0: INTSR0)
Error
controller
Serial transfer error interrupt
(INTSRE0)
PM30
Serial data output pin
(when CSI00: SO00)
(when UART0:TxD0)
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