參數(shù)資料
型號(hào)： ISP1130N
廠商： NXP SEMICONDUCTORS
元件分類： 微控制器/微處理器
英文描述： Universal Serial Bus compound hub with integrated keyboard controller
中文描述： SPECIALTY MICROPROCESSOR CIRCUIT, PDIP56
封裝： PLASTIC, SDIP-56
文件頁(yè)數(shù)： 40/68頁(yè)
文件大?。?/td> 1786K
代理商： ISP1130N
Philips Semiconductors
ISP1130
USB compound hub with keyboard controller
Objective specification
Rev. 01 — 23 March 2000
40 of 68
9397 750 06895
Philips Electronics N.V. 2000. All rights reserved.
[1]
All bits are individually addressable.
[1]
[2]
All bits are individually addressable.
A logic 0 indicates a LOW priority, a logic 1 indicates a HIGH priority.
10.6 Timers/counters
The ISP1130 contains two 16-bit timer/counters (Timer 0 and Timer 1), which are
used for generating interrupt requests. Each timer has a control bit C/T in the Timer
Control register (TCON, see
Table 67
), which selects the timer or counter function. In
the ISP1130 this bit must always be 0 for timer operation.
Table 59: IE register: bit allocation
Bit
7
Symbol
EA
Reset
0
Access
R/W
6
-
0
5
4
3
2
1
0
IN2
0
R/W
I2C
0
R/W
ET1
0
R/W
EX1
0
R/W
ET0
0
R/W
EX0
0
R/W
R/W
Table 60: IE register: bit description
Bit
[1]
Symbol
IE.7
EA
Description
enable all interrupts; a logic 0 disables all interrupts, a logic 1
allows all interrupt sources to be individually enabled or disabled
reserved
A logic 1 enables external interrupt 2 (input INT)
A logic 1 enables I
2
C interrupt
A logic 1 enables Timer 1 overflow interrupt
A logic 1 enables external interrupt 1 (keyboard)
A logic 1 enables Timer 0 overflow interrupt
A logic 1 enables external interrupt 0 (USB)
IE.6
IE.5
IE.4
IE.3
IE.2
IE.1
IE.0
-
IN2
I2C
ET1
EX1
ET0
EX0
Table 61: IP register: bit allocation
Bit
7
Symbol
Reset
X
Access
R/W
6
-
X
5
4
3
2
1
0
-
IN2
0
R/W
I2C
0
R/W
ET1
0
R/W
EX1
0
R/W
ET0
0
R/W
EX0
0
R/W
R/W
Table 62: IP register: bit description
Bit
[1]
Symbol
IP.7
-
IP.6
-
IP.5
IN2
IP.5
I2C
IP.3
ET1
IP.2
EX1
IP.1
ET0
IP.0
EX0
Description
[2]
reserved
reserved
priority of external interrupt 2 (input INT)
priority of I
2
C interrupt
priority of Timer 1 interrupt
priority of external interrupt 1 (keyboard)
priority of Timer 0 interrupt
priority of external 0 (USB) interrupt
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