System Overview
Am186™CC/CH/CU Microcontrollers User’s Manual
3-25
[DCE_RTR_C]
PIO45
O
DCE Ready-to-Receive Channel C indicates to an external
serial interface that the internal channel C DCE is ready to accept
data. [DCE_CTS_C] and [DCE_RTR_C] provide the
handshaking for the channel C DCE interface.
HDLC Channel D (DCE)
DCE_RXD_D
[RXD_U] (UART)
[PCM_RXD_D]
PIO26
STI
DCE Receive Data Channel D is the serial data input pin for
the channel D DCE interface.
[DCE_TXD_D]
[TXD_U] (UART)
[PCM_TXD_D]
PIO20
OD-
O
DCE Transmit Data Channel D is the serial data output pin for
the channel D DCE interface.
DCE_RCLK_D
[RTR_U] (UART)
[PCM_CLK_D]
PIO25
STI
DCE Receive Clock Channel D provides the receive clock to
the channel D 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_D] pin externally.
[DCE_TCLK_D]
[CTS_U] (UART)
[PCM_FSC_D]
PIO24
STI
DCE Transmit Clock Channel D provides the transmit clock to
the channel D 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_D pin externally.
[DCE_CTS_D]
[CTS_HU] (High-
Speed UART)
[PCM_TSC_D]
PIO46
STI
DCE Clear-To-Send Channel D indicates to the channel D DCE
interface that an external serial interface is ready to receive data.
[DCE_CTS_D] and [DCE_RTR_D] provide the handshaking for
DCE Channel D.
[DCE_RTR_D]
[RTR_HU] (High-
Speed UART)
PIO47
O
DCE Ready-To-Receive Channel D indicates to an external
serial interface that the internal channel D DCE interface is ready
to accept data. [DCE_CTS_D] and [DCE_RTR_D] provide the
handshaking for the channel D DCE interface.
HDLC Channel A (PCM)
[PCM_RXD_A]
DCE_RXD_A
[GCI_DD_A]
STI
PCM Receive Data Channel A is the serial data input pin for
the channel A PCM Highway interface.
[PCM_TXD_A]
DCE_TXD_A
[GCI_DU_A]
O-
LS-
OD
PCM Transmit Data Channel A is the serial data output pin for
the channel A PCM Highway interface.
[PCM_CLK_A]
DCE_RCLK_A
[GCI_DCL_A]
STI
PCM Clock is the single transmit and receive data clock pin for
the channel A PCM Highway interface.
[PCM_FSC_A]
DCE_TCLK_A
[GCI_FSC_A]
STI
PCM Frame Synchronization Clock provides the Frame
Synchronization Clock input (usually 8 kHz) for the channel A
PCM Highway interface.
[PCM_TSC_A]
[DCE_CTS_A]
PIO17
OD
PCM Time Slot Control A enables an external buffer device
when channel A PCM Highway data is present on the
[PCM_TXD_A] output pin in PCM Highway mode.
Table 3-7
Signal Descriptions (Continued)
Signal Name
1
Multiplexed
Signal(s)
Type Description
CC
CC
CC
CC
CC
CC
CC
CC
CC
CH
CC
CH
CC
CH
CC
CH
CC
CH
CC
CH
Summary of Contents for Am186 CC
Page 1: ...Am186 CC CH CU Microcontrollers User s Manual Order 21914B...
Page 4: ...iv Am186 CC CH CU Microcontrollers User s Manual...
Page 18: ...Table of Contents xviii Am186 CC CH CU Microcontrollers User s Manual...
Page 24: ...Introduction xxiv Am186 CC CH CU Microcontrollers User s Manual...
Page 40: ...Architectural Overview 1 16 Am186 CC CH CU Microcontrollers User s Manual...
Page 86: ...System Overview 3 36 Am186 CC CH CU Microcontrollers User s Manual...
Page 92: ...Emulator Support 4 6 Am186 CC CH CU Microcontrollers User s Manual...
Page 112: ...DRAM Controller 6 8 Am186 CC CH CU Microcontrollers User s Manual...
Page 134: ...Interrupts 7 22 Am186 CC CH CU Microcontrollers User s Manual...
Page 186: ...Programmable I O Signals 9 8 Am186 CC CH CU Microcontrollers User s Manual...
Page 200: ...Watchdog Timer 11 6 Am186 CC CH CU Microcontrollers User s Manual...
Page 232: ...Asynchronous Serial Ports UARTs 13 24 Am186 CC CH CU Microcontrollers User s Manual...
Page 242: ...Synchronous Serial Port SSI 14 10 Am186 CC CH CU Microcontrollers User s Manual...
Page 264: ...High Level Data Link Control HDLC 15 22 Am186 CC CH CU Microcontrollers User s Manual...
Page 332: ...Universal Serial Bus USB 18 34 Am186 CC CH CU Microcontrollers User s Manual...
Page 348: ...Register Summary A 16 Am186 CC CH CU Microcontrollers User s Manual...
Page 376: ...Index Index 18 Am186 CC CH CU Microcontrollers User s Manual...