DS72011RB120FPV Renesas Electronics America, DS72011RB120FPV Datasheet - Page 812

• Manufacturer Part Number: DS72011RB120FPV
• Description: IC SH7201 MPU ROMLESS 176LQFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7200r

Specifications of DS72011RB120FPV

• Core Size: 32-Bit
• Core Processor: SH-2A
• Speed: 120MHz
• Connectivity: CAN, EBI/EMI, FIFO, I²C, SCI, Serial Sound
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 176-LQFP
• No. Of I/o's: 109
• Ram Memory Size: 32KB
• Cpu Speed: 120MHz
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 3V To 3.6V
• Operating Temperature Range: -20°C To +70°C
• Embedded Interface Type: I2C, SSI
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: R0K572011S000BE - KIT STARTER FOR SH7201HS0005KCU11H - EMULATOR E10A-USB H8S(X),SH2(A)
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Section 18 Serial Sound Interface (SSI)
Page 784 of 1190
Bit
31 to 29 —
28
27
Bit Name
DMRQ
UIRQ
Initial
Value
All 0
0
0
R/W
R
R
R/W*
1
DMA Request Status Flag
Description
Reserved
The read value is not guaranteed. The write value
should always be 0.
This status flag allows the CPU to recognize the value
of the DMA request pin on the SSI module.
•
•
Underflow Error Interrupt Status Flag
This status flag indicates that data was supplied at a
lower rate than was required.
In either case, this bit is set to 1 regardless of the value
of the UIEN bit and can be cleared by writing 0 to this
bit.
If UIRQ = 1 and UIEN = 1, an interrupt occurs.
•
•
Note: When underflow error occurs, the current data in
TRMD = 0 (Receive mode)
If DMRQ = 1, the SSIRDR has unread data.
If SSIRDR is read, DMRQ = 0 until there is new
unread data.
TRMD = 1 (Transmit mode)
If DMRQ = 1, SSITDR requires data to be written to
continue the transmission to the audio serial bus.
Once data is written to SSITDR, DMRQ = 0 until it
requires further transmit data.
TRMD = 0 (Receive mode)
If UIRQ = 1, SSIRDR was read before there was
new unread data indicated by the DMRQ or DIRQ
bit. This can lead to the same received sample
being stored twice by the host leading to potential
corruption of multi-channel data.
TRMD = 1 (Transmit mode)
If UIRQ = 1, SSITDR did not have data written to it
before it was required for transmission. This will
lead to the same sample being transmitted once
more and a potential corruption of multi-channel
data. This is more serious error than a receive
mode underflow as the output SSI data results in
error.
the data buffer of this module is transmitted until
the next data is filled.
R01UH0026EJ0300 Rev. 3.00
SH7201 Group
Sep 24, 2010