mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 1088

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Module Memory Map
1088
ISO_7816E
TTYPE
Field
INIT
2
1
0
0
1
Detect Initial Character
When this bit is set, all received characters will be searched for a valid initial character. If an invalid initial
character is identified then a NACK will be sent if ANACK is set. All received data is discarded and error
flags blocked (S1[NF], S1[OR], S1[FE], S1[PF], IS7816[WT], IS7816[CWT], IS7816[BWT], IS7816[GTV])
until a valid initial character is detected. Upon detection of a valid initial character the configuration values
S2[MSBF], C3[TXINV] and S2[RXINV] are automatically updated to reflect the initial character that was
received. The actual INIT data value is not stored in the receive buffer. Additionally, upon detection of a
valid initial character the IS7816[INITD] flag is set and an interrupt issued as programmed by the
IE7816[INITDE] bit. When a valid initial character is detected the INIT bit is automatically cleared.
0
1
Transfer Type
This bit indicates the transfer protocol being used.
Refer to
0
1
ISO-7816 Functionality Enabled
This bit indicates that the UART is operating according to the ISO-7816 protocol.
NOTE: This bit should only be modified when no transmit or receive is occurring. If this bit is changed
0
1
No NACK is automatically generated.
A NACK is automatically generated if a parity error is detected or if an invalid initial character is
detected.
Normal operating mode. Receiver does not seek to identify initial character.
Receiver searches for initial character.
T = 0 Per the ISO-7816 specification.
T = 1 Per the ISO-7816 specification.
ISO-7816 functionality is turned off / not enabled.
ISO-7816 functionality is turned on / enabled.
ISO-7816 / smartcard support
during a data transfer the data being transmitted or received may be transferred incorrectly.
UARTx_C7816 field descriptions (continued)
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Preliminary
for more details.
Description
Freescale Semiconductor, Inc.