3069RF-ZTAT Datasheet, PDF (504/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

Smart Card Interface
• One frame consists of 8-bit data and a parity bit.
• In transmitting, a guard time of at least two elementary time units (2 etu) is provided between
the end of the parity bit and the start of he next frame. (An elementary time unit is the time
required to transmit one bit.)
• In receiving, if a parity error is detected, a low error signal level is output for 1 etu, beginning
10.5 etu after the start bit.
• In transmitting, if an error signal is received, the same data is automatically transmitted again
after at least 2 etu.
• Only asynchronous communication is supported. There is no synchronous communication
function.
For details of smart card interface operation, see section 14, Smart Card Interface.
Table 13.8 SMR Settings and Serial Communication Formats
Bit 7
C/A
0
1
SMR Settings
Bit 6
CHR
0
Bit 2
MP
0
Bit 5
PE
0
1
1
0
1
0
1
—
—
1
—
—
———
Bit 3
STOP
0
1
0
1
0
1
0
1
0
1
0
1
—
SCI Communication Format
Mode
Data
Length
Multi-
pro-
cessor
Bit
Parity
Bit
Stop Bit
Length
Asyn-
chronous
mode
8-bit data
Absent
Absent
Present
1 bit
2 bits
1 bit
2 bits
7-bit data
Absent 1 bit
2 bits
Present 1 bit
2 bits
Asyn-
8-bit data
chronous
mode (multi-
processor ^{7-bit data}
format)
Present Absent
1 bit
2 bits
1 bit
2 bits
Syn-
chronous
mode
8-bit data Absent
None
Rev. 5.0, 09/04, page 482 of 978