pdi1394l40 NXP Semiconductors, pdi1394l40 Datasheet - Page 67

• Manufacturer Part Number: pdi1394l40
• Description: 1394 Enhanced Av Link Layer Controller
• Manufacturer: NXP Semiconductors

Philips Semiconductors
13.4 Indirect Address Registers
13.4.1
The host interface register set has been extended to provide additional control and data registers for FIFO size control and copy protection
control registers. These extensions have been implemented via an indirect addressing mechanism. This mechanism allows software written for
previous versions of the AV Link (PDI1394L21 and PDI1394L11) to operate on the PDI1394L40 with minimal changes.
To read or write from the indirect memory, you first write the appropriate address into the indirect address register (A8 = 1), then read or write
from (or to) the indirect data increment the indirect address by one quadlet. Therefore, if you are writing several quadlets to continuous
addresses, you will not need to increment the indirect address register.
13.4.2 Indirect Address Register (INDADDR) – Base Address: 0x0F8
Bit 15..0:
Table 8. INDADDR address and function
13.4.3 Indirect Data Register (INDDATA) – Base Address: 0x0FC
Bit 31..0:
2000 Dec 15
0–0x0FC
0x100–0x1FC
0x500–0xFFFF
1394 enhanced AV link layer controller
INDADDR
R/W
R/W
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
Indirect Address: To read or write from the indirect memory, you first write the appropriate address into the indirect
address register (A8 = 1), then read or write from (or to) the indirect data register (INDDATA, 0x0FC). Each write or
read (A8 = 1) to the indirect data register (INDDATA) will automatically increment the indirect address by one
quadlet. The following addresses are defined in the indirect address space:
Quadlet of data pointed to by the indirect address n the INDADDR register (0x0F8). Note that the Indirect address
autoincrements on each read or write of the INDDATA register.
Reserved
FIFO Size Registers
Reserved
RESERVED
WINDOW TO THE INDIRECT QUADLET POINTED TO BY INDADDR
FUNCTION
64
9
9
INDADDR
8
8
7
7
6
6
5
5
4
4
3
3
2
2
SV01027
SV01764
PDI1394L40
1
1
Preliminary specification
0
0