HD6417712BPV Renesas Electronics America, HD6417712BPV Datasheet - Page 597

• 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: -

16.3.8
SCBRR is an 8-bit register that sets the serial transfer bit rate in accordance with the baud rate
generator operating clock selected by bits CKS1 and CKS0 in SCSMR.
SCBRR can be read or written to by the CPU at all times.
SCBRR is initialized to H'FF by a power-on reset or manual reset. It is not initialized in standby
mode or in the module standby state, and retains its contents.
The SCBRR setting is found from the following equation.
Asynchronous mode:
Clock synchronous mode:
Table 16.2 Relationship between n and Clock
The bit rate error in asynchronous mode is found from the following equation:
n
0
1
2
3
N =
N =
Where
Bit Rate Register (SCBRR)
64×2
8 × 2
B:
N:
Pφ:
n:
2n–1
2n–1
Pφ
Pφ
× B
× B
Clock
Pφ
Pφ/4
Pφ/16
Pφ/64
Bit rate (bits/s)
SCBRR setting for baud rate generator (0 ≤ N ≤ 255)
Peripheral module operating frequency (MHz)
Baud rate generator input clock (n = 0 to 3)
(See table 16.2 for the relation between n and the clock.)
× 10
× 10
6
6
– 1
– 1
Section 16 Serial Communication Interface with FIFO (SCIF)
CKS1
0
0
1
1
Rev. 1.00 Dec. 27, 2005 Page 553 of 932
SCSMR Setting
CKS0
0
1
0
1
REJ09B0269-0100