R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 870

• Manufacturer Part Number: R8A77800ANBGAV
• Description: IC SUPERH MPU ROMLESS 449-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

Specifications of R8A77800ANBGAV

• Core Processor: SH-4A
• Core Size: 32-Bit
• Speed: 400MHz
• Connectivity: Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
• Peripherals: DMA, POR, WDT
• Number Of I /o: 75
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.15 V ~ 1.35 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 449-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 22 Serial I/O with FIFO (SIOF)
Rev.1.00 Dec. 13, 2005 Page 818 of 1286
REJ09B0158-0100
Bit
1
0
Bit Name
RFUDF
RFOVF
Initial
Value
0
0
R/W
R/W
R/W
Receive FIFO Overflow
Description
Receive FIFO Underflow
0: No receive FIFO underflow
1: Receive FIFO underflow
A receive FIFO underflow means that reading of SIRDR
has occurred when the receive FIFO is empty.
When a receive FIFO underflow occurs, the value of
data read from SIRDR is not guaranteed.
•
•
•
0: No receive FIFO overflow
1: Receive FIFO overflow
A receive FIFO overflow means that writing has
occurred when the receive FIFO is full.
When a receive FIFO overflow occurs, the SIOF
indicates overflow, and receive data is lost.
•
•
•
This bit is valid when the RXE bit in SICTR is 1.
When 1 is written to this bit, the contents are
cleared. Writing 0 to this bit is invalid.
If the issue of interrupts by this bit is enabled, an
SIOF interrupt is issued.
This bit is valid when the RXE bit in SICTR is 1.
When 1 is written to this bit, the contents are
cleared. Writing 0 to this bit is invalid.
If the issue of interrupts by this bit is enabled, an
SIOF interrupt is issued.