HD6417727F160V Renesas Electronics America, HD6417727F160V Datasheet - Page 697

• Manufacturer Part Number: HD6417727F160V
• Description: MPU 3V 16K PB-FREE 240-QFP
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7700r

Specifications of HD6417727F160V

• Core Processor: SH-3 DSP
• Core Size: 32-Bit
• Speed: 160MHz
• Connectivity: FIFO, SCI, SIO, SmartCard, USB
• Peripherals: DMA, LCD, POR, WDT
• Number Of I /o: 104
• Program Memory Type: ROMless
• Ram Size: 32K x 8
• Voltage - Supply (vcc/vdd): 1.7 V ~ 2.05 V
• Data Converters: A/D 6x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 240-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

20.3.6
(1) Outline
Features of SIOF transmit or receive FIFO are listed as below.
• Capacity of 32 bits × 16 stages for each of transmission and reception
• Pointer is updated by a read/write cycle for all of the access sizes of CPU and DMAC
• Access cycle number is always 2 cycles (P bus cycle) for all of the access sizes.
(2) Transmit Request
Transmit request of FIFO is displayed in the following two bits of SISTR register.
• Transmit request: TDREQ (transmit interrupt factor)
• Receive request: RDREQ (receive interrupt factor)
It is possible to set independently the condition for each of submitting transmit request of transmit
or receive FIFO. Condition of transmit request are set to bits TFWM2 to TFWM0 in SIFCTR
register and transfer request of receive FIFO are set to bits RFWM2 to RFWM0.
Table 20.9 shows transmit request submit condition, and table 20.10 shows receive request submit
condition.
Table 20.9 Transmit Request Submit Condition
TFWM2 to TFWM0
000
100
101
110
111
(It is impossible to separate one stage access to multiple times)
FIFO
Request Stage
Number
1
4
16
8
12
Transmit Request Submit
16 stages empty area
Over 12 stages empty area
Over 8 stages empty area
Over 4 stages empty area
Over 1 stage empty area
Rev.6.00 Mar. 27, 2009 Page 639 of 1036
Section 20 Serial IO (SIOF)
REJ09B0254-0600
Used Area
Small
Large