ucb1400 NXP Semiconductors, ucb1400 Datasheet - Page 18

• Manufacturer Part Number: ucb1400
• Description: Audio Codec With Touch Screen Controller And Power Management Monitor
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9397 750 09611
Product data
Fig 13. Block diagram of the interrupt controller.
INTERRUPT
SOURCE
xxx
8.8 General purpose IOs
8.9 Interrupt generation
‘1’
RESET
The UCB1400 has 10 programmable digital input/output (I/O) pins. These pins can be
independently programmed as input or output using the IOD[9:0] bits in the
IO Direction Register (0x5C). The output data is determined by the content of the
IO[9:0] bits in the IO Data Register (0x5A), while the actual status of these pins can
be read from the same register bits.
The data on the IO[9:0] pins are fed into the interrupt control block, where they can
generate an interrupt on the rising and/or falling edge of these signals.
The UCB1400 contains a programmable interrupt control block, which can generate
an interrupt for a 0-to-1 and/or 1-to-0 transition on one or more of the IO[9:0] pins, the
audio overload detection, the ADC Ready signal, and the TSPX and TSMX signals.
Fig 12. Block diagram of IO pin circuitry.
xxxS WRITE ‘1’
D
D
R
R
TO INTERRUPT MODULE
Rev. 02 — 21 June 2002
xxxP
xxxN
IO DATA[x]
IO DATA[x]
(WRITE)
(READ)
IOD[x]
xxxS READ
OR TREE
Audio codec with touch screen controller
GIEN
and power management monitor
IRQOUT
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
TO AC97 GPIO_INT
AND
WAKE-UP BLOCK
SN00225
SN00239
IO[x]
UCB1400
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