pc87591l National Semiconductor Corporation, pc87591l Datasheet - Page 42

• Manufacturer Part Number: pc87591l
• Description: Lpc Mobile Embedded Controllers
• Manufacturer: National Semiconductor Corporation

www.national.com
2.0 Signal/Pin Description and Configuration
2.2.1
2.2.2
2.2.3
ACCESS.bus (ACB1 and ACB2) Interface
Analog Interface
Clocks
32KCLKIN 116
32KX1
32KX2
CLK
CLKOUT
SCL2-1
SDA2-1
AD9-0
DA3-0
DP
DN
Signal
Signal
Signal
128-Pin
70-61
76-73
69
70
116
118
N/A
3
128-Pin
125,
121
126,
122
128-Pin
LQFP
LQFP
LQFP
176-Pin
94-93,
90-87,
84-81
102-99
93
94
176-Pin
158
158
160
47
1
176-Pin
169,
163
170,
164
LQFP
LQFP
LQFP
I/O
I/O
I/O IN
I/O IN
O
O
I/O
I
I
O
O
O
I
I
Buffer
Buffer
Type
IN
SM
SM
Type
O
Buffer
IN
IN
O
O
Type
O
O
IN
DA
AD
DI
OSC
DI
OSC
/OD
/OD
1/2
2/4
T
2
2
Power
Power
AV
AV
AV
AV
Power
Well
Well
V
V
Well
V
V
V
V
V
CC
CC
42
CC
CC
CC
CC
CC
CC
PP
PP
PP
Analog to Digital Converter Inputs.
Digital to Analog Converter Outputs.
Diode Anode. Remote diode current source.
Connected to remote discrete diode.
Diode Cathode. Remote diode current sink.
Connected to remote discrete diode. Must be
grounded when not used.
ACCESS.bus Serial Clock 1 and 2 Signals.
An internal pull-up for this pin is optional.
ACCESS.bus Serial Data 1 and 2 Signals. An
internal pull-up for this pin is optional.
(Continued)
32.768 KHz Clock Input.
32.768 KHz Crystal Oscillator Input. Input
from external crystal oscillator circuitry. See
Figure 113 on page 356.
32.768 KHz Crystal Oscillator Output. Output
to external crystal oscillator circuitry. See
Figure 113 on page 356.
Clock Output. PC87591x Core Domain system
clock. Available in all environments, in the
176-pin package option.
Clock Output. This pin may output either the
32.768 KHz clock or the Core Domain system
clock (CLK). CLKM bit in MCFG register
selects the output clock frequency.
Description
Description
Description
Revision 1.07