R8A77800ANBGAV Renesas Electronics America, R8A77800ANBGAV Datasheet - Page 602

• Manufacturer Part Number: R8A77800ANBGAV
• Description: IC SUPERH MPU ROMLESS 449-BGA
• Manufacturer: Renesas Electronics America
• Series: SuperH® SH7780r

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: -

Section 13 PCI Controller (PCIC)
(2)
Target Read/Write Cycle Timing
The PCIC responds to target memory burst read accesses from an external master by retries until 8
longword (32-bit) data are prepared in the PCIC's internal FIFO. That is, it always responds to the
first target burst read with a retry. For a single read access, the PCIC reaponds as soon as the data
is prepared.
Also, when a target memory write access is made, the content of the data is guaranteed until the
write data is completely written to the local memory if reading the target write data immediately
after write access.
Only single transfers are supported in the case of target accesses of the configuration space and
I/O space. If there is a burst access request, the external master is disconnected on completion of
the first transfer. Note that the DEVSEL response speed is fixed at 2 clocks (Medium) in the case
of target access to the PCIC.
Figure 13.21 shows an example target single read cycle in normal mode. Figure 13.22 shows an
example target single write cycle in normal mode. Figure 13.23 is an example of a target burst
read cycle in host bus bridge mode. And figure 13.24 is an example of a target burst write cycle in
host bus bridge mode.
Rev.1.00 Dec. 13, 2005 Page 550 of 1286
REJ09B0158-0100