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参数资料
| 型号： | RL5C478A |
| 厂商： | RICOH COMPANY LTD |
| 元件分类： | 总线控制器 |
| 英文描述： | PCI BUS CONTROLLER, PQFP256 |
| 封装： | 28 X 28 MM, 1.70 MM HEIGHT, 0.40 MM PITCH, PLASTIC, LQFP-256 |
| 文件页数： | 9/43页 |
| 文件大小： | 472K |
| 代理商： | RL5C478A |
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RL5C478A/RB5C478A
PCI-CARDBUS BRIDGE DATA SHEET
RICOH COMPANY,LTD.
12345 1998
REV 2.0
17
Pin Name
Type
Description
PCI Bus Interface Pin Descriptions (Continued)
GNT#
IN
GRANT: This signal indicates the RL5C478A/RB5C478A that access to the bus has
been granted. This is a point to point signal.
PME#
OUT(OD)
POWER MANAGEMENT EVENT: This signal is pure open drain. This signal indicates
a change in the power management state.
3.5 System Interrupt Signals
Pin Name
Type
Description
System Interrupt Pin Descriptions
INTA#
OUT(OD)
PCI INTERRUPT REQUEST A: This signal indicates a programmable interrupt
request generated from the card socket A interface. This signal is connected PCI bus
INTA# interrupt line.
INTB#
OUT(OD)
PCI INTERRUPT REQUEST B: This signal indicates a programmable interrupt
request generated from the card socket B interface. This signal is connected PCI bus
INTB# interrupt line.
IRQ3/GPIO0
IRQ4/GPIO1
IRQ5/GPIO2
IRQ7/GPIO3
IRQ9/SRIRQ#
IRQ10/LEDA#
IRQ11/LEDB#
IRQ12/
LEDOUT
IRQ14
IRQ15
/ZVENIN
OUT(TS)
SYSTEM INTERRUPT REQUEST IRQ 3-15: These signals indicate the interrupts
requests from one of the cards and are connected to the ISA bus IRQx signal.
IRQ12 is reassigned as an LED output when LED enable bit in ATA control register is
set to one. When Serial IRQ Enable bit in Misc Control register is set to one, IRQ9 is
reassigned as SRIRQ# signal, at the same time IRQ15 is reassigned as ZVENIN
signal ; ZV port enables to input signal, and IRQ10,11 are reassigned as LEDA#,
LEDB# signals. ALL outputs of the ZV port will be tri-stated during ZVENIN is Low.
When Serial IRQ signal is enabled, IRQ3,4,5 and 7 are assigned as GPIO (General
Purpose I/O) pins. These are input/output pins determined by user without effect on
the controller transaction.
RI_OUT#
OUT(TS)
RING INDICATE OUTPUT: When 16-bit card is inserted, this signal is assigned as
RI_OUT# from a socket‘s RI# input when Ring Indicate Enable bit in Interrupt and
General control register is set to one.
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