pc87591l National Semiconductor Corporation, pc87591l Datasheet - Page 353

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

Revision 1.07
6.0 Host-Controlled Modules and Host Interface
6.1.12 Real Time Clock (RTC) Configuration
Logical Device 16 (10
Table 62 lists the configuration registers that affect the RTC. See Section 6.1.1 on page 335 and Section 6.1.2 on page 340
for descriptions of the other configuration registers.
RAM Lock Register (RLR)
When a non-reserved bit is set to 1, it can be cleared only by host domain hardware reset.
Location: Index F0
Type: R/W
Bit
Reset
2-0
Bit
3
4
5
Name
30
60
61
62
63
70
71
74
75
F0
F1
F2
F3
Index
16
16
16
16
16
16
16
16
16
16
16
16
16
Reserved.
Block Extended RAM. Controls access to the Extended RAM 128 bytes.
0: No effect on Extended RAM access (default)
1: Reads and writes to the Extended RAM are blocked, writes are ignored and reads return FF
Block Extended RAM Read. Controls read from bytes 00
0: No effect on Extended RAM access (default)
1: Reads to bytes 00
Block Extended RAM Write. Controls writes to bytes 00
0: No effect on the Extended RAM access (default)
1: Writes to bytes 00
Activate. When bit 0 is cleared, the registers of this logical device are not
accessible.
Base Address MSB register.
Base Address LSB register. Bit 0 (for A0) is read only, ‘0’.
Base Address MSB register.
Base Address LSB register. Bit 0 (for A0) is read only, ‘0’.
RTC Interrupt Number and Wake-Up on IRQ Enable register.
RTC Interrupt Type. Bit 1 is read/write; other bits are read only.
Report no DMA assignment.
Report no DMA assignment.
RAM Lock Register (RLR)
Date of Month Alarm Register Offset (DOMAO)
Month Alarm Register Offset (MONAO)
Century Register Offset (CENO)
Standard
Block
RAM
16
7
0
16
) RTC Configuration
Block RAM
16
16
Write
-1F
-1F
6
0
RTC Configuration Register or Action
16
16
of the Extended RAM are ignored
of the Extended RAM are ignored; reads return FF
Table 62. RTC Configuration Registers
RAM Write
Extended
Block
5
0
RAM Read
Extended
Block
Description
353
4
0
16
16
-1F
(Continued)
Extended
-1F
Block
RAM
16
16
3
0
of the Extended RAM.
of the Extended RAM.
2
0
16
R/W
R/W
R/W
R/W
R/W
R/W
R/W
RO
RO
Type
R/W
R/W
R/W
R/W
Reserved
1
0
16
Reset
00
00
70
00
72
08
00
04
04
00
00
00
00
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16
16
16
16
16
16
16
16
16
16
16
16
16
0
0