参数资料
型号: ISP1520BD,557
厂商: NXP SEMICONDUCTORS
元件分类: 总线控制器
英文描述: UNIVERSAL SERIAL BUS CONTROLLER, PQFP64
封装: 10 X 10 MM, 1.40 MM HEIGHT, PLASTIC, MS-026, SOT-314-2, LQFP-64
文件页数: 53/54页
文件大小: 288K
代理商: ISP1520BD,557
ISP1520_4
Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Product data sheet
Rev. 04 — 28 April 2006
7 of 53
Philips Semiconductors
ISP1520
Hi-Speed USB hub controller
[1]
The maximum current that the ISP1520 can sink on a pin is 8 mA.
[2]
Symbol names ending with underscore N (for example, NAME_N) represent active LOW signals.
[3]
Downstream ports 1 and 2 cannot be disabled.
[4]
To disable a downstream port n, connect both pins DPn and DMn to VCC (3.3 V); unused ports must be
disabled in reverse order starting from port 4.
VREF(5V0)
56
-
reference voltage (5 V
± 5 %); used to power internal pull-up
resistors of PSWn_N pins and also for the analog overcurrent
detection
VCC3
57
-
supply voltage 3 (3.3 V) (digital)
GND
58
-
ground supply
GND
59
-
ground supply
GRN1_N
60
I/O
output — green LED port indicator (open-drain) for
downstream facing port 1
input — function of the pin when used as an input is given in
AMB1_N
61
I/O
output — amber LED port indicator (open-drain) for
downstream facing port 1
input — function of the pin when used as an input is given in
HUBGL_N
62
O
hub GoodLink LED indicator output; the LED is off until the hub
is congured; a transaction between the host and the hub will
blink the LED off for 100 ms
SCL
63
I/O
I2C-bus clock (open-drain); see Table 11
SDA
64
I/O
I2C-bus data (open-drain); see Table 11
Table 2.
Pin description …continued
Symbol[1][2]
Pin
Type
Description
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