
V PeRiPheRaL MoDuLes 3 (inteRFaCe): GeneRaL-PuRPose seRiaL inteRFaCe (eFsio)
s1C33L17 teChniCaL ManuaL
ePson
V-1-55
V
EFSIO
0x300B1C: serial i/F Ch.1 iso7816 Mode Fi/Di Ratio Register (LsB)
(peFsiF1_FiDiL)
0x300B1D: serial i/F Ch.1 iso7816 Mode Fi/Di Ratio Register (MsB)
(peFsiF1_FiDiM)
name
address
Register name
Bit
Function
setting
init. R/W
Remarks
0x0 to 0xFF
(FIDI1[13:0] = 0x0 to 0x3FFF)
FiDi17
FiDi16
FiDi15
FiDi14
FiDi13
FiDi12
FiDi11
FiDi10
D7
D6
D5
D4
D3
D2
D1
D0
Serial I/F Ch.1
ISO7816 mode FI/DI ratio [7:0]
0
R/W Valid only in
ISO7816 mode.
00300B1C
(B)
serial i/F Ch.1
iso7816 mode
Fi/Di ratio
register (LsB)
(pEFSIF1_FIDIL)
–
0x0 to 0x3F
(FIDI1[13:0] = 0x0 to 0x3FFF)
–
FiDi113
FiDi112
FiDi111
FiDi110
FiDi19
FiDi18
D7–6
D5
D4
D3
D2
D1
D0
reserved
Serial I/F Ch.1
ISO7816 mode FI/DI ratio [13:8]
–
0
–
R/W
0 when being read.
Valid only in
ISO7816 mode.
00300B1D
(B)
serial i/F Ch.1
iso7816 mode
Fi/Di ratio
register (MsB)
(pEFSIF1_FIDIM)
D[7:0]/0x300B1C FiDi1[7:0]: iso7816 Mode Fi/Di Ratio [7:0]
D[5:0]/0x300B1D FiDi1[13:8]: iso7816 Mode Fi/Di Ratio [13:8]
Sets the FI/DI ratio for generating the ISO7816 clock. (Default: 0x0000)
The bit rate in ISO7816 mode is determined by the equation shown below.
D
bps = ——
× fSIO_CLK
F
bps:
Bit rate (bits/second)
D:
Bit rate adjustment value
1, 2, 4, 8, 16, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64
F:
Clock frequency divide value
372 (5 MHz), 558 (6 MHz), 744 (8 MHz), 1116 (12 MHz), 1488 (16 MHz), 1860 (20 MHz),
512 (5 MHz), 768 (7.5 MHz), 1024 (10 MHz), 1536 (15 MHz), 2048 (20 MHz)
( ) indicates the maximum output clock frequency.
fSIO_CLK: ISO7816 clock frequency (baud-rate timer output and #SCLK1 output)
The sampling clock frequency for asynchronous transfer is determined by the following equation:
D
1
fSAMPL = ——
× fSIO_CLK × ————
F
DIVMD
fSAMPL: Sampling clock frequency
DIVMD: Divide ratio internally used by the serial interface (1/16 or 1/8, selected with DIVMD1)
FIDI1[13:0] should be set to F
× DIVMD / D - 1. Tables V.1.8.7 and V.1.8.8 list the values that can be
set to FIDI1[13:0].