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SH7785 Datasheet, PDF (38/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer | |||
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1. Overview
Item
PCI bus controller
(PCIC)
Direct memory
access controller
(DMAC)
Clock pulse
generator (CPG)
Features
⢠PCI bus controller (supports a subset of revision 2.2)
⯠32-bit bus (33 MHz or 66 MHz)
⢠Operation as PCI master/target
⢠Operation in PCI host/normal mode
⯠Built-in bus arbiter (host mode)
⢠Operates with up to four external bus-master devices
⢠Mode for operation with an external bus arbiter
⢠Supports burst transfers
⢠Supports parity checking and error reports
⢠Supports four individual external interrupt signals (INTA to INTD) in host
mode
⢠Supports a single external interrupt signal (INTA) in normal mode
⢠Up to 512 Mbytes of PCI memory space (32 bit address mode)
⢠Up to 64 Mbytes of PCI memory space (29 bit address mode)
⢠Number of channels: 12
⢠12-channel physical address DMA controller
⢠Four channels support external requests (channels 0 to 3)
⢠Address space: 4 Gbytes (Physical address)
⢠Units of data transfer: 8, 16, or 32 bits; 16 or 32 bytes
⢠Address modes:
⯠Dual address mode
⢠Transfer requests: External request, on-chip peripheral module request,
or auto-request
⢠Choice of DACK or DRAK (four external pins)
⢠Bus modes: Cycle-stealing or burst mode
⢠Priority: Select either fixed mode or round-robin mode
⢠CPU frequency: Up to 600 MHz
⢠Local bus frequency: Up to 100 MHz
⢠DDR2-SDRAM interface frequency: Up to 300 MHz
⢠On-chip peripheral bus frequency: Up to 50 MHz
⢠Power-down modes
⯠Sleep mode
⯠Module-standby mode
⯠DDR back-up power function (power is supplied only to the DDR)
Rev.1.00 Jan. 10, 2008 Page 8 of 1658
REJ09B0261-0100
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