System Overview
Am186™CC/CH/CU Microcontrollers User’s Manual
3-23
[CTS_HU]
[DCE_CTS_D]
[PCM_TSC_D]
PIO46
STI
Clear-To-Send High-Speed UART provides the Clear-to-Send
signal from the high-speed asynchronous serial port when
hardware flow control is enabled for the port. The [CTS_HU]
signal gates the transmission of data from the serial port transmit
shift register. When [CTS_HU] is asserted, the transmitter
begins transmission of a frame of data, if any is available. If
[CTS_HU] is deasserted, the transmitter holds the data in the
serial port transmit shift register. The value of [CTS_HU] is
checked only at the beginning of the transmission of the frame.
[CTS_HU] and [RTR_HU] form the hardware handshaking
interface for the High-Speed UART.
[RTR_HU]
[DCE_RTR_D]
PIO47
O
Ready-To-Receive High-Speed UART provides the Ready-to-
Receive signal to the high-speed asynchronous serial port when
hardware flow control is enabled for the port. The [RTR_HU]
signal is asserted when the associated serial port receive data
register does not contain valid, unread data. [CTS_HU] and
[RTR_HU] form the hardware handshaking interface for the
High-Speed UART.
SYNCHRONOUS SERIAL INTERFACE (SSI)
[SCLK]
PIO11
O
Serial Clock provides the clock for the synchronous serial
interface to allow synchronous transfers between the
microcontroller and a slave device.
[SDATA]
PIO12
B
Serial Data is used to transmit and receive data between the
microcontroller and a slave device on the synchronous serial
interface.
[SDEN]
PIO10
O
Serial Data Enable enables data transfers on the synchronous
serial interface.
HIGH-LEVEL DATA LINK CONTROL SYNCHRONOUS COMMUNICATION INTERFACES
HDLC Channel A (DCE)
DCE_RXD_A
[GCI_DD_A]
[PCM_RXD_A]
STI
DCE Receive Data Channel A is the serial data input pin for
the channel A DCE interface.
DCE_TXD_A
[GCI_DU_A]
[PCM_TXD_A]
OD-
O
DCE Transmit Data Channel A is the serial data output pin for
the channel A DCE interface.
DCE_RCLK_A
[GCI_DCL_A]
[PCM_CLK_A]
STI
DCE Receive Clock Channel A provides the receive clock to
the channel A DCE interface. If the same clock is to be used for
both transmit and receive, then this pin should be tied to the
DCE_TCLK_A pin externally.
The DCE function is the default at reset, so the board designer
is responsible for properly terminating the DCE_RCLK_A input.
DCE_TCLK_A
[GCI_FSC_A]
[PCM_FSC_A]
STI
DCE Transmit Clock Channel A provides the transmit clock to
the channel A DCE interface. If the same clock is to be used for
both transmit and receive, then this pin should be tied to the
DCE_RCLK_A pin externally.
The DCE function is the default at reset, so the board designer
is responsible for properly terminating the DCE_TCLK_A input.
Table 3-7
Signal Descriptions (Continued)
Signal Name
1
Multiplexed
Signal(s)
Type Description
CC
CH
CC
CH
CC
CH
CC
CH
CC
CH
Содержание Am186 CC
Страница 1: ...Am186 CC CH CU Microcontrollers User s Manual Order 21914B...
Страница 4: ...iv Am186 CC CH CU Microcontrollers User s Manual...
Страница 18: ...Table of Contents xviii Am186 CC CH CU Microcontrollers User s Manual...
Страница 24: ...Introduction xxiv Am186 CC CH CU Microcontrollers User s Manual...
Страница 39: ...Architectural Overview Am186 CC CH CU Microcontrollers User s Manual 1 15 Figure 1 6 32 Channel Linecard CH CC...
Страница 40: ...Architectural Overview 1 16 Am186 CC CH CU Microcontrollers User s Manual...
Страница 86: ...System Overview 3 36 Am186 CC CH CU Microcontrollers User s Manual...
Страница 92: ...Emulator Support 4 6 Am186 CC CH CU Microcontrollers User s Manual...
Страница 112: ...DRAM Controller 6 8 Am186 CC CH CU Microcontrollers User s Manual...
Страница 134: ...Interrupts 7 22 Am186 CC CH CU Microcontrollers User s Manual...
Страница 186: ...Programmable I O Signals 9 8 Am186 CC CH CU Microcontrollers User s Manual...
Страница 200: ...Watchdog Timer 11 6 Am186 CC CH CU Microcontrollers User s Manual...
Страница 232: ...Asynchronous Serial Ports UARTs 13 24 Am186 CC CH CU Microcontrollers User s Manual...
Страница 242: ...Synchronous Serial Port SSI 14 10 Am186 CC CH CU Microcontrollers User s Manual...
Страница 264: ...High Level Data Link Control HDLC 15 22 Am186 CC CH CU Microcontrollers User s Manual...
Страница 332: ...Universal Serial Bus USB 18 34 Am186 CC CH CU Microcontrollers User s Manual...
Страница 348: ...Register Summary A 16 Am186 CC CH CU Microcontrollers User s Manual...
Страница 376: ...Index Index 18 Am186 CC CH CU Microcontrollers User s Manual...