參數(shù)資料
型號: KS9245
廠商: SAMSUNG SEMICONDUCTOR CO. LTD.
英文描述: Automated CD-ROM Controller(光盤驅動器控制器器)
中文描述: 自動CD - ROM控制器(光盤驅動器控制器器)
文件頁數(shù): 97/102頁
文件大小: 419K
代理商: KS9245
SAMSUNG
Version: TM 2.4
KS9245 ATAPI Automated CD-ROM Controller
Preliminary Technical Manual
_____________________________________________________________
Do Not Copy or Release
12-4
12.6 Intel & Motorola Microprocessor Indirect Access
The KS9245 is designed to be directly interfaced with Intel and Motorola type microprocessors
without any external glue logic (refer to the Microprocessor Interface timing in section 9.1.1 and
9.1.2). However, if the timing specifications 9.1.1 and 9.1.2 cannot be satisfied, then an indirect
access method must be used. For this case, the timing of section 9.1.3 is used. The following
shows an interface scheme for using indirect access on the KS9245 with Intel and Motorola type
microprocessors.
Note: For Indirect Access mode, ISEL needs to be sampled high by the KS9245
immediately after power-on. After this, both ISEL and MSEL can be used as BADD7 and BADD8
to interface with the DRAM, respectively.
KS9245
Intel Microprocessor
Intel Indirect Access Interface Diagram
RDB
WRB
RDB
WRB
AD[7:0]
AD[7:0]
74HC373
ALE
RSB
Address Port:
Data Port:
A0 = 0
A0 = 1
A0
G
OC
D0
Q0
CSB
AD0
22K
+5V
MSEL/BADD8
ISEL/BADD7
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