mcf5407 Freescale Semiconductor, Inc, mcf5407 Datasheet - Page 362

• Manufacturer Part Number: mcf5407
• Description: Mcf5407 Coldfire Integrated Microprocessor User
• Manufacturer: Freescale Semiconductor, Inc

Register Descriptions
14.3.17 UART Interrupt Vector Register (UIVRn)
The UIVRn, Figure 14-21, contain the 8-bit internal interrupt vector number (IVR).
Table 14-15 describes UIVRn fields.
14.3.18 UART Input Port Register (UIPn)
The UART input port registers (UIPn), Figure 14-22, show the current state of the CTS
input when the processor is in UART mode.
Table 14-16 describes UIPn fields.
14-20
Address
Bits
7–1
Address
Bits
7–0
0
Reset
Reset
Field
R/W
Field
R/W
Name
CTS
—
Name
IVR
7
Reserved, should be cleared.
Current state. The CTS value is latched and reflects the state of the input pin when UIPn is read.
Note: This bit has the same function and value as UIPCRn[RTS].
0 The current state of the CTS input is logic 0.
1 The current state of the CTS input is logic 1.
When UART1 is in modem mode, CTS toggles when a frame sync occurs. It is used during testing to
synchronize test code running on the CPU with frames transferred on the serial interface.
7
Interrupt vector. Indicates the vector number where the address of the exception handler for the
specified interrupt is located. UIVRn is reset to 0x0F, indicating an uninitialized interrupt condition.
Figure 14-21. UART Interrupt Vector Register (UIVRn)
Figure 14-22. UART Input Port Register (UIPn)
Table 14-15. UIVRn Field Descriptions
Table 14-16. UIPn Field Descriptions
MBAR + 0x1F0 (UIVR0), 0x230 (UIVR1)
MCF5407 User’s Manual
MBAR + 0x1F4 (UIP0), 0x234 (UIP1)
—
0000_1111
1111_1111
Read only
Description
Description
R/W
IVR
1
CTS
0
0