參數(shù)資料
型號: romr0002
廠商: SIEMENS AG
英文描述: MultiMediaCard R0002 2 Mbyte ROM(多媒體卡 R0002 2 Mbyte ROM)
中文描述: 多媒體R0002 2字節(jié)的光盤(多媒體卡R0002 2字節(jié)光盤)
文件頁數(shù): 6/41頁
文件大?。?/td> 207K
代理商: ROMR0002
Siemens
Product Manual R0002
Semiconductor Group
6
3.1
3
Overview
The following diagram shows an overview of the R0002 internal architecture:
All controllers in the R0002 are clocked by the interface signal CLK. The card is controlled by the
three line MultiMediaCard interface containing the signals: CMD, CLK, DAT (see "Chapter 4: Inter-
face" for more details). For the identification of the R0002 in a stack of MultiMediaCards a card iden-
tification register (CID) and a relative card address register (RCA) is foreseen. An additional register
contains different types of operation parameters. This register is called card specific data register
(CSD). The communication using the MultiMediaCard lines to access either the memory field or the
registers is defined by the MultiMediaCard standard (see "Chapter 6: Communication").
The card has its own power on detection unit. No additional master reset signal is required to setup
the card after power on. It is protected against shortcut during insertion and removal while the Multi-
MediaCard system is powered up (see "Chapter 9: Power supply").
RCA[15:0]
CID[127:0]
CSD[127:0]
MultiMediaCard
interface
controller
Memory core
Memory core interface
CMD
CLK
DAT
reset
Interface driver
V
DD
reset
Figure 1: R0002 architecture
not
connected
1
2
3
4
5
6
7
C
C
D
P
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