R8A77850BDBGV#RD0Z Renesas Electronics America, R8A77850BDBGV#RD0Z Datasheet - Page 681
![IC SUPERH MPU ROMLESS 436BGA](/photos/28/62/286211/436-bfbga_sml.jpg)
R8A77850BDBGV#RD0Z
Manufacturer Part Number
R8A77850BDBGV#RD0Z
Description
IC SUPERH MPU ROMLESS 436BGA
Manufacturer
Renesas Electronics America
Series
SuperH® SH7780r
Datasheet
1.R8A77850AADBGV.pdf
(1694 pages)
Specifications of R8A77850BDBGV#RD0Z
Core Processor
SH-4A
Core Size
32-Bit
Speed
600MHz
Connectivity
Audio Codec, MMC, Serial Sound, SCI, SIO, SPI, SSI
Peripherals
DMA, POR, WDT
Number Of I /o
108
Program Memory Type
ROMless
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
1 V ~ 1.2 V
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
436-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
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In configuration accesses, no interrupt is generated by a PCI master abort (no device connected).
A configuration write will end normally. A configuration read will return a value of 0.
(3)
In host mode, the PCI bus arbiter in the PCIC is activated.
The PCIC supports four external masters (four pairs of REQ and GNT).
If the bus usage is simultaneously requested by two devices or more, the bus arbiter accepts the
request of the highest priority device.
The PCI bus arbiter supports two modes to determine the device priority: (1) fixed priority and (2)
pseudo-round-robin. The mode is selected by the BMAM bit in PCICR.
In the following description, the device n indicates a PCI device that uses REQn.
(a) Fixed Priority: When the BMAM bit in PCICR is cleared to 0, the priorities of devices are
fixed by the default as follows:
PCIC > device 0 > device 1 > device 2 > device 3
The PCIC has the priority to use the bus in comparison with other devices.
(b) Pseudo-Round-Robin: When the BMAM bit in PCICR is set to 1, the most recently permitted
device is assigned as the lowest priority.
The initial priority is the same as that of the fixed priority mode.
After the device 1 requires the bus and transfer data and the request is permitted, the priority
changes as follows:
PCIC > device 0 > device 2 > device 3 > device 1
Arbitration
Configuration address
register
PCI bus address
Figure 13.17 Address Generation for Type 0 Configuration Access
Enable bit
0: Disabled
1: Enabled
31 30
31
Reserved
24
Only one bit is set to 1.
23
Bus No.
16
15
Device No.
Rev.1.00 Jan. 10, 2008 Page 649 of 1658
1110
1110
Function
No.
8 7
8 7
Register No. 0 0
13. PCI Controller (PCIC)
2 1 0
2 1 0
REJ09B0261-0100
0 0
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