pc87591l-n05 National Semiconductor Corporation, pc87591l-n05 Datasheet - Page 194

• Manufacturer Part Number: pc87591l-n05
• Description: Lpc Mobile Embedded Controller
• Manufacturer: National Semiconductor Corporation

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4.0 Embedded Controller Modules
ACB Own Address Register (ACBnADDR and ACBnADDR2)
The ACBnADDR and ACBnADDR2 registers hold the module’s ACCESS.bus addresses. The reset value of these registers
are undefined.
ACBnADDR:
Location: Channel 1 - 00 FF68
ACBnADDR2:
Location: Channel 1- 00 FE6C
Type:
Bit
Name
Bit
6-0
Bit
5
6
7
7
GCMEN (Global Call Match Enable). When set, enables the matching of an incoming address byte to the
general call address (Start Condition followed by address byte of 00
cleared, the ACB does not respond to a global call.
NMINTE (New Match Interrupt Enable). When set, enables the interrupt on a new match (i.e., when NMATCH
in ACBnST register is set). The interrupt is issued only if INTEN in ACBnCTL1 register is set. This bit must be
set when using DMA for data transfer when n=3 and 4.
STASTRE (Stall After Start Enable). When set (1), enables the Stall After Start mechanism. In such a case,
the ACB stalls the bus after the address byte. When STASTRE is cleared, STASTR in ACBnST is always
cleared.
ADDR (Address). Holds the 7-bit ACCESS.bus address of the PC87591L-N05. When in Slave mode, the first
seven bits received after a Start Condition are compared to this field (the first bit received is compared to bit 6,
the next bit to bit 5 and so on until the last bit, which is compared to bit 0). If the address field matches the
received data and SAEN in ACBnADDR register is set to 1, a match is declared.
SAEN (Slave Address Enable). When set (1), indicates that the ADDR field holds a valid address and enables
the match of ADDR to an incoming address byte. When cleared, the ACB does not check for an address match.
Channel 2 - 00 FFE8
Channel 3 - 00 FC48
Channel 4 - 00 FC68
Channel 2- 00 FFEC
Channel 3 - 00 FC4C
Channel 4 - 00 FC6C
R/W
SAEN
7
16
16
16
16
16
16
16
16
6
5
(Continued)
Description
Description
194
4
ADDR
3
16
) while the ACB is in Slave mode. When
2
1
0
Revision 1.2