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參數資料
| 型號： | W722 |
| 廠商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | Universal Serial Bus (USB) Hub/Compound Device Controller(通用串行總線集線器/混合設備控制器) |
| 中文描述： | 通用串行總線（USB）集線器/復合設備控制器（通用串行總線集線器/混合設備控制器） |
| 文件頁數： | 3/18頁 |
| 文件大小： | 229K |
| 代理商： | W722 |
1
Oki Semiconductor
W722 USB Hub/Compound Device Controller
0.5
μ
m Technology Megamacro Function
DESCRIPTION
Oki’s W722 Universal Serial Bus (USB) Hub/Compound Device Controller Megamacro Function is a
featured element in Oki’s 0.5
μ
m Sea of Gates (SOG) and Customer Structured Array (CSA) families.
The W722 provides Oki’s Serial Interface Engine (SIE), a Hub Core Controller (HCC), a Hub Repeater
(HR), and a status/descriptor/register file block in four highly integrated submodules. The submodule
partitioning allows custom configurations to be easily developed. Oki also offers optional USB FIFO Con-
troller and Application Interface Logic Modules to form a USB Compound Device function.
FEATURES
USB v1.0 compliant.
Supports up to four downstream ports
(expandable).
Can replace external downstream ports with
internal ports to interface with embedded
functions.
Supports any combination of low-speed (1.5
Mbps) and full-speed (12 Mbps) downstream
ports.
Hub function supports one control endpoint
and one interrupt endpoint.
Embedded function supports 1 control end
point and 6 additional endpoint addresses,
expandable up to 32 endpoint addresses.
1.
2.
The hub controller has 15K gates, with an additional 12K gates for the optional embedded function, FIFO control, and application interface logic.
Pin count is based on three downstream ports and one embedded function.
Supported ASIC Families
Family Name
Family Type
MSM13R0000
Sea of Gates
MSM98R000
Customer Structured Array
Recommended Operating Conditions (V
SS
= 0 V)
Parameter
Symbol
Min.
Typical
Max.
Unit
Power supply voltage
V
DD
T
j
2.7
3.3
3.6
V
Operating temperature
-40
+25
+85
°
C
Megamacro Function Characteristics
Megamacro Function
Description
Logic Gate Count
15K
[1]
Logic Pin Count
154
[2]
W722
USB Hub/Compound Device Controller
Auto-sensing capability for power sources can
behave as either a self-powered or bus-powered
hub.
Individual port power switching capability for
bus-powered hubs.
Individual port over-current protection
mechanism and individual port over-current
indicator for self-powered hubs.
Supports remote-wakeup feature initiated by
the hub itself, the embedded function, or the
downstream devices.
Built-in (dynamic phase-locked loop (DPLL);
interface for optional external DPLL.
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