SAA7240 データシートの表示（PDF） - Philips Electronics
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SAA7240 Datasheet PDF : 32 Pages
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SYMBOL
PIN
MLCASN/BAA#/SIZE1
MUCASN/SIZE2
UCASN
WEN
DCS0N
CS[0:8]N
CS[10:9]N(1)
45
44
42
62
47
56 to 50,
60, 61
OEN/TSN
58
DTACK
59
CLK
91
UART 0 interface
TXD0
142
RXD0
141
RTSN0
143
CTSN0
144
UART 1 and SSI interface
TXD1/V34_TXD(2)
138
RXD1/V34_RXD(2)
137
RTSN1/V34_FS(2)
139
CTSN1/V34_CLK(2) 140
MCLK
146
UART 2 interface
TXD2
136
RXD2
135
TYPE
DESCRIPTION
O column access strobe mid lower byte
O column access strobe mid upper byte
O column access strobe upper byte
O write enable
O chip select for SDRAM bank 0
O chip select
n.a. chip select extension shared with the IEEE 1284
interface
O output enable or Transfer Start indication
I data termination acknowledge
O 40.5 MHz clock
BUFFER TYPE
RESET
STATE
3-state output; 2 mA output drive HIGH
3-state output; 2 mA output drive HIGH
3-state output; 2 mA output drive HIGH
3-state output; 2 mA output drive HIGH
3-state output; 2 mA output drive HIGH
3-state output; 2 mA output drive HIGH
n.a.
n.a.
3-state output; 2 mA output drive HIGH
CMOS input
Z
2 mA output drive
T
O UART 0 transmit data line
I UART 0 receive data line
O UART 0 request to send
I UART 0 clear to send
2 mA output drive
CMOS input
2 mA output drive
CMOS input
HIGH
Z
HIGH
Z
O transmit data line or transmit serial data to the CODEC
I receive data line or receive serial data from CODEC
I/O request to send (output) or Frame synchronization
reference from CODEC (input)
I clear to send or serial input clock from CODEC (up to
3.375 MHz)
O master clock to the CODEC (up to 36.864 MHz)
2 mA output drive
CMOS input
bidirectional; CMOS input;
2 mA output drive
CMOS input
2 mA output drive
HIGH
Z
HIGH
Z
T
O UART 2 transmit data line
I UART 2 receive data line
2 mA output drive
CMOS input
HIGH
Z
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