ISP1130DL Philips Semiconductors, ISP1130DL Datasheet - Page 40

• Manufacturer Part Number: ISP1130DL
• Description: Universal Serial Bus compound hub with integrated keyboard controller
• Manufacturer: Philips Semiconductors

Table 59: IE register: bit allocation
Table 61: IP register: bit allocation
Philips Semiconductors
9397 750 06895
Objective specification
Bit
Symbol
Reset
Access
Bit
Symbol
Reset
Access
R/W
R/W
EA
X
7
0
7
-
10.6 Timers/counters
R/W
R/W
Table 60: IE register: bit description
[1]
Table 62: IP register: bit description
[1]
[2]
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
the ISP1130 this bit must always be 0 for timer operation.
Bit
IE.7
IE.6
IE.5
IE.4
IE.3
IE.2
IE.1
IE.0
Bit
IP.7
IP.6
IP.5
IP.5
IP.3
IP.2
IP.1
IP.0
X
6
0
6
-
-
[1]
[1]
All bits are individually addressable.
All bits are individually addressable.
A logic 0 indicates a LOW priority, a logic 1 indicates a HIGH priority.
R/W
Symbol
EA
-
IN2
I2C
ET1
EX1
ET0
EX0
R/W
Symbol
-
-
IN2
I2C
ET1
EX1
ET0
EX0
IN2
IN2
5
0
5
0
Rev. 01 — 23 March 2000
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
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)
Description
reserved
reserved
priority of external interrupt 2 (input INT)
priority of I
priority of Timer 1 interrupt
priority of external interrupt 1 (keyboard)
priority of Timer 0 interrupt
priority of external 0 (USB) interrupt
R/W
R/W
I2C
I2C
4
0
4
0
Table
2
C interrupt
67), which selects the timer or counter function. In
[2]
USB compound hub with keyboard controller
R/W
R/W
ET1
ET1
3
0
3
0
2
C interrupt
EX1
R/W
EX1
R/W
2
0
2
0
© Philips Electronics N.V. 2000. All rights reserved.
R/W
R/W
ET0
ET0
1
0
1
0
ISP1130
EX0
R/W
EX0
R/W
0
0
0
0
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