參數(shù)資料
型號: 935260699551
廠商: NXP SEMICONDUCTORS
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP208
封裝: PLASTIC, SOT-316, SQFP-208
文件頁數(shù): 28/148頁
文件大?。?/td> 692K
代理商: 935260699551
1998 Apr 09
123
Philips Semiconductors
Product specication
Multimedia bridge, high performance
Scaler and PCI circuit (SPCI)
SAA7146A
Table 110 Status register (IICSTA); note 1
Note
1. The error bits have to be cleared, before a new command can be executed. This may be needed twice after using
ABORT.
Table 111 Selection of I2C-bus bit rate; note 1
Notes
1. Since the maximum width of spikes suppressed by the input filter depends on the PCI clock frequency, the
appropriate timing parameter of 50 ns from the I2C-bus specification is not fulfilled. Refer to the document for further
details. This document may be ordered using the code 9398 393 40011.
2. The selected bit rate is the maximum bit rate and could be ‘stretched’ (slowed down) by slaves.
OFFSET
(HEX)
NAME
BIT
TYPE
DESCRIPTION
90
IICCC [2:0]
10 to 8
RW
clock bit rate selection; see Table 111
ABORT
7
RW
ABORT OPERATION: clears busy bit
SPERR
6
RW
bus error due to invalid start/stop condition
APERR
5
RW
NACK: error in address phase
DTERR
4
RW
NACK: error in data transmission
DRERR
3
RW
NACK: error when receiving data
AL
2
RW
arbitration lost
ERR
1
R
general error ag: has to be reset by clearing all error ags
BUSY
0
R
operation ongoing
IICCC2
IICCC1
IICCC0
BIT RATE(2)
1
0
1
PCI clock/6400
0
1
PCI clock/3200
1
0
PCI clock/480
1
0
PCI clock/320
1
PCI clock/240
0
PCI clock/120
0
1
0
PCI clock/80
0
1
PCI clock/60
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