CS98100 Cirrus Logic, Inc., CS98100 Datasheet - Page 48

• Manufacturer Part Number: CS98100
• Description: DVD Video Processor With Progressive Scan
• Manufacturer: Cirrus Logic, Inc.

6.4
This interface connects to the non-volatile memory
that contains the firmware. The memory could be
ROM, NVRAM (FLASH), EEPROM, or any com-
bination of these. This interface can also connect to
SRAM that can emulate a ROM on a development
system. The bus width is 8 or 16 bits. Most of these
48
73, 74, 76, 77,
78, 80, 83, 5,
6, 7, 9, 11,
13, 14. 16
28
47, 49, 51, 52,
53, 54, 55, 63,
64, 65, 70, 72
59
60
43
61
ROM/NVRAM Interface
Pin
12,
M_D[15:0]
M_A[11:0]
M_D[27:16]
NVM_CE_N
NVM_OE_N
NVM_WE_N
M_D[31]
Signal Name
Table 19. ROM/NVRAM Interface Pin Assignments
Type
O
O
O
O
O
O
B
NVM_Data[15:0], Memory Data Bus (shared with bits
[15:0] of DRAM data bus). Use M_D[7:0] for 8-bit inter-
face.
NVM_Addr[11:0], Memory Address Bus[11:0] (shared with
DRAM address bus)
NVM_Addr[23:12], Memory Address Bus[23:12] (shared
with bits [27:16] of DRAM data bus)
ROM/NVRAM Chip Enable.
ROM/NVRAM Output Enable.
Copy of ROM/NVRAM Output Enable.
NVRAM Write Enable.
pins are shared with the DRAM interface, which
operates simultaneously with the ROM/NVRAM
interface.
Description
CS98100