參數(shù)資料
型號: UCB1400BE
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
英文描述: Audio codec with touch screen controller and power management monitor
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝: 7 X 7 X 1.40 MM, PLASTIC, LQFP-48
文件頁數(shù): 18/63頁
文件大?。?/td> 674K
代理商: UCB1400BE
Philips Semiconductors
UCB1400
Audio codec with touch screen controller
and power management monitor
Product data
Rev. 02 — 21 June 2002
18 of 63
9397 750 09611
Koninklijke Philips Electronics N.V. 2002. All rights reserved.
8.8 General purpose IOs
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.
8.9 Interrupt generation
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.
IOD[x]
IO DATA[x]
(WRITE)
IO DATA[x]
(READ)
TO INTERRUPT MODULE
IO[x]
SN00225
Fig 13. Block diagram of the interrupt controller.
D
R
D
R
‘1’
xxxS WRITE ‘1’
RESET
INTERRUPT
SOURCE
xxx
xxxN
xxxP
OR TREE
xxxS READ
IRQOUT
GIEN
TO AC97 GPIO_INT
AND
WAKE-UP BLOCK
SN00239
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