HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 580

• Manufacturer Part Number: HD6417712BPV
• Description: MPU 1.5/3.3V 0K PB-FREE 256-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH Ethernetr

Specifications of HD6417712BPV

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, Ethernet, FIFO, SCI, SIO
• Peripherals: DMA, POR, WDT
• Number Of I /o: 24
• Program Memory Type: ROMless
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.4 V ~ 1.6 V
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

Section 16 Serial Communication Interface with FIFO (SCIF)
16.3.1
SCRSR is the register used to receive serial data.
The SCIF sets serial data input from the RxD pin in SCRSR in the order received, starting with the
LSB (bit 0), and converts it to parallel data. When one byte of data has been received, it is
transferred to the receive FIFO data register SCFRDR, automatically.
SCRSR cannot be directly read or written to by the CPU.
16.3.2
SCFRDR is a 16-stage FIFO register that stores received serial data.
When the SCIF has received one byte of serial data, it transfers the received data from SCRSR to
SCFRDR where it is stored, and completes the receive operation. SCRSR is then enabled for
reception, and consecutive receive operations can be performed until the receive FIFO data
register is full (16 data bytes).
SCFRDR is a read-only register, and cannot be written to by the CPU.
If a read is performed when there is no receive data in the receive FIFO data register, an undefined
value will be returned. When the receive FIFO data register is full of receive data, subsequent
serial data is lost.
The contents of SCFRDR are undefined after a power-on reset or manual reset.
Rev. 1.00 Dec. 27, 2005 Page 536 of 932
REJ09B0269-0100
Receive Shift Register (SCRSR)
Receive FIFO Data Register (SCFRDR)