R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 1045
R8A77800ANBGAV
Manufacturer Part Number
R8A77800ANBGAV
Description
IC SUPERH MPU ROMLESS 449-BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77800ANBGV.pdf
(1342 pages)
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
-
Available stocks
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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R8A77800ANBGAV
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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Bit
27
Bit Name
UIRQ
Initial
Value
0
R/W
R/W*
Description
Underflow Error Interrupt Status Flag
This status flag indicates that the data has been
supplied at a lower rate than the required rate.
This bit is set to 1 regardless of the setting of UIEN bit.
In order to clear it to 0, write 0 in it.
If UIRQ = 1 and UIEN = 1, then an interrupt will be
generated.
When TRMD = 0 (Receive Mode):
If UIRQ = 1, it indicates that SSIRDR was read out
before DMRQ and DIRQ bits would indicate the
existence of new unread data. In this instance, the
same received data may be stored twice by the host,
which can lead to destruction of multi-channel data.
When TRMD = 1 (Transmit Mode):
If UIRQ = 1, it indicates that the transmitted data was
not written in SSITDR. By this, the same data may be
transmitted one time too often, which can lead to
destruction of multi-channel data. Consequently,
erroneous SSI data will be output, which makes this
error more serious than underflow in the receive mode.
Note: When underflow error occurs, the data in the data
buffer will be transmitted until the next data is
written in.
Section 26 Serial Sound Interface (SSI) Module
Rev.1.00 Dec. 13, 2005 Page 993 of 1286
REJ09B0158-0100
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