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參數資料
型號: W9961CF
廠商: WINBOND ELECTRONICS CORP
元件分類: 消費家電
英文描述: H.263/H.261 Video Codec
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP208
封裝: 28 X 28 MM, 2.60 MM HEIGHT, PLASTIC, QFP-208
文件頁數: 52/65頁
文件大小: 344K
代理商: W9961CF
W9961CF
- 52 -
7.10 ISA-like Bus Interface and GPIOs
7.10.1 ISA-like Bus Interface
The ISA-like Bus provides a 13-bit address bus, an 8-bit data bus, one write strobe signal, one read
strobe signal, and one interrupt input as interface with an external co-processor. It can be accessed
directly by the host through PCI bus, or indirectly by the host or RISC via the ISA-like Bus Control
registers as described in Table 7.9. The external interrupt input can be either level-triggered
(ISAINT_2 = 1) or falling edge-triggered (ISAINT_2 = 0).
Table 7.9 ISA-like Bus Access Modes
Mode
Address Space
Description
PCI Direct Access
BA3 000000H ~ 00003FH
64-byte address space, byte-access only.
ISA-like Bus signals are automatically
generated when a PCI I/O read or write
command to this address space is issued.
PCI Indirect Access
BA1 0040H ~ 004CH
8K-byte address space. ISA-like Bus
signals are generated via the ISA-like Bus
Control registers.
RISC Indirect Access
RISC DM 000010H ~ 000013H
8K-byte address space. ISA-like Bus
signals are generated via the ISA-like Bus
Control registers.
7.10.2 GPIO
The W9961CF provides 5 general purpose I/O ports. Each GPIO can be configured as an input or
output port, depending on the corresponding bit of the GPIO Output Enable register (GPIOOE).
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相關代理商/技術參數
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W9966CF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
W9966TF 制造商:未知廠家 制造商全稱:未知廠家 功能描述:
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