CS98100 Cirrus Logic, Inc., CS98100 Datasheet - Page 47

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

6.3
These pins are used to interface the CS98100 with
external SDRAM of various sizes. Typical config-
urations are two 1 Mbyte x16-bit, or one 2 Mbyte
43, 44, 45, 46,
47, 49, 51, 52,
53, 54, 55, 63,
64, 65, 70, 72,
73, 74, 76, 77,
78, 80, 83, 5,
6, 7, 9, 11, 12, 13,
14, 16
2, 3, 4, 84, 85, 96,
97, 98,
100,101,102, 103
20
17
35
37
40
42
199
203,202,201,200
SDRAM Interface
Pin
M_A[11.0]
DR_CKO
DR_CKE
DR_BS_N
DR_AP
DR_RAS_N
DR_CAS_N
DR_WE_N
DR_DQM[3..0]
Signal Name
M_D[31:0]
Table 18. SDRAM Interface Pin Assignments
O
O
O
O
O
O
O
O
O
Type
B
Memory Data Bus. CS98100 can use all 32 bits or can use
only M_D[15:0], in which case M_D[31:16] can be left
unconnected.note: 32 bits wide is recommended
Memory Address Bus. Connect in order starting with M_A[0]
to all RAM address pins not already connected to DR_BS_N
or DR_AP.
Memory Clock
Memory Clock Enable
Bank Selection. Always connect to RAM BS or BS0 pin.
Memory Auto Pre-charge. Always connect to RAM AP pin.
Memory Row Address Strobe
Memory Column Address Strobe
Memory Write Enable
IO Mask of Data Bus DR_DQM[3] -> DR_Data[31:24]
x32-bit.
terface any particular configuration of SDRAM.
Table 18
Description
gives instructions on how to in-
CS98100
47