DS8007 Maxim, DS8007 Datasheet - Page 34

• Manufacturer Part Number: DS8007
• Description: The DS8007 multiprotocol dual smart card interface is a low-cost, dual smart card reader interface supporting all ISO 7816, EMV®, and GSM11-11 requirements
• Manufacturer: Maxim

Multiprotocol Dual Smart Card Interface
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
Table 4. Fi, Di Parameter Possibilities
RFU = Reserved for future use.
Table 5. PSC, PDR Settings to Support F, D Parameters
34
TA(1).Fi
0000
0001
0010
0011
0100
0101
0110
1001
1010
1011
1100
1101
______________________________________________________________________________________
TA(1).Fi
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0 = /31
1 = /32
PSC
0
0
0
0
0
0
0
1
1
1
1
1
1116
1488
1860
1024
1536
2048
RFU
RFU
RFU
RFU
372
372
558
744
512
768
0001
Fi
12
12
18
24
36
48
60
16
24
32
48
64
0010
MAX CLKx (MHz)
12
18
24
30
12
16
24
32
6
6
9
8
RFU
RFU
7.5
12
16
20
10
15
20
—
—
4
5
6
8
5
0011
12
15
12
16
—
3
3
6
9
4
6
8
PDR SETTING FOR Di =
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.
0100
—
—
—
—
—
3
6
2
3
4
6
8
31 x 12
31 x 12
31 x 18
31 x 24
31 x 36
31 x 48
31 x 60
32 x 16
32 x 24
32 x 32
32 x 48
32 x 64
Fi =
—
—
—
—
0101
—
—
—
—
—
—
—
3
1
2
3
4
TA(1).Di
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
0110
—
—
—
—
—
—
—
—
—
—
1
2
1000
—
—
—
—
1
1
2
3
4
5
2
4
RFU
RFU
RFU
RFU
RFU
RFU
RFU
RFU
16
32
12
20
Di
1
2
4
8
1001
—
—
—
—
—
—
—
—
—
—
—
3