參數(shù)資料
型號: DS8007A-EAG+T
廠商: Maxim Integrated Products
文件頁數(shù): 28/41頁
文件大?。?/td> 0K
描述: IC INTERFACE SMART CARD 48-LQFP
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 2,000
應(yīng)用: 智能卡
接口: 并聯(lián)
電源電壓: 2.7 V ~ 6 V
封裝/外殼: 48-LQFP
供應(yīng)商設(shè)備封裝: 48-LQFP(7x7)
包裝: 帶卷 (TR)
安裝類型: 表面貼裝
其它名稱: 90-8007A+TAG
DS8007A
Multiprotocol Dual Smart Card Interface
34
______________________________________________________________________________________
parameters continue to be used until a successful PPS
exchange is completed. The negotiated Fn, Dn values
are then used after a successful PPS exchange. If the
card comes up in specific mode (i.e., TA(2) is present
in ATR), then the indicated Fi, Di values apply immedi-
ately after successful ATR if bit 5 of the TA(2) charac-
ter is 0. If bit 5 of TA(2) is 1, implicit values should be
used. The TA(1) character of ATR, if present, contains
the Fi and Di values indicated by the card.
Table 5 demonstrates how the prescaler (PSC) bit and
programmable divider register (PDRx) can be config-
ured to generate the requested F/D ratios. All settings
assume that the CKU bit is configured to its reset
default logic 0 state.
Table 4. Fi, Di Parameter Possibilities
TA(1).Fi
Fi
MAX CLKx (MHz)
Fi =
TA(1).Di
Di
0000
372
4
31 x 12
0000
RFU
0001
372
5
31 x 12
0001
1
0010
558
6
31 x 18
0010
2
0011
744
8
31 x 24
0011
4
0100
1116
12
31 x 36
0100
8
0101
1488
16
31 x 48
0101
16
0110
1860
20
31 x 60
0110
32
0111
RFU
0111
RFU
1000
RFU
1000
RFU
1001
512
5
32 x 16
1001
12
1010
768
7.5
32 x 24
1010
20
1011
1024
10
32 x 32
1011
RFU
1100
1536
15
32 x 48
1100
RFU
1101
2048
20
32 x 64
1101
RFU
1110
RFU
1110
RFU
1111
RFU
1111
RFU
RFU = Reserved for future use.
Table 5. PSC, PDR Settings to Support F, D Parameters
PDR SETTING FOR Di =
TA(1).Fi
PSC
0 = /31
1 = /32
0001
0010
0011
0100
0101
0110
1000
1001
0000
0
12
6
3
1
0001
0
12
6
3
1
0010
0
18
9
0011
0
24
12
6
3
2
0100
0
36
18
9
3
0101
0
48
24
12
6
3
4
0110
0
60
30
15
5
3
1001
1
16
8
4
2
1
1010
1
24
12
6
3
2
1011
1
32
16
8
4
2
1
1100
1
48
24
12
6
3
4
1101
1
64
32
16
8
4
2
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