AMD Am186 CC User Manual page 270

Table 16-1 HDLC/TSA/GCI Multiplexed Signals (Same as Table 15-1) (Continued)
Multiplexed Signals
External Interface
Ch
DCE
DCE_RXD_B PCM_RXD_B
DCE_TXD_B PCM_TXD_B
DCE_RCLK_B PCM_CLK_B
B
DCE_TCLK_B PCM_FSC_B
DCE_CTS_B PCM_TSC_B
DCE_RTR_B
DCE_RXD_C PCM_RXD_C
DCE_TXD_C PCM_TXD_C
DCE_RCLK_C PCM_CLK_C PCM_CLK_C
C
CC
DCE_TCLK_C PCM_FSC_C PCM_FSC_C
DCE_CTS_C PCM_TSC_C
DCE_RTR_C
DCE_RXD_D PCM_RXD_D
DCE_TXD_D PCM_TXD_D
DCE_RCLK_D PCM_CLK_D
D
CC
DCE_TCLK_D PCM_FSC_D
DCE_CTS_D PCM_TSC_D
DCE_RTR_D
16-6
HDLC External Serial Interface Configuration (TSAs)
PCM
GCI CC
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Am186™CC/CH/CU Microcontrollers User's Manual
Function
PIOs
UART
— PIO36 DCE and PCM data input pin
— PIO37 DCE and PCM data output pin PIO37
DCE receive clock/PCM
— PIO40
receive and transmit clock
DCE transmit clock/PCM frame
— PIO41
sync clock
DCE clear to send/PCM
— PIO38
external buffer enable
— PIO39 DCE ready to receive
— PIO42 DCE and PCM data input pin
— PIO43 DCE and PCM data output pin PIO43
DCE receive clock/PCM
receive and transmit clock
— PIO22
input/GCI-to-PCM conversion
clock output
DCE transmit clock/PCM frame
— PIO23 sync clock input/GCI-to-PCM
conversion frame sync output
DCE clear to send/PCM
— PIO44
external buffer enable
— PIO45 DCE ready to receive
DCE and PCM data input/
RXD_U PIO26
UART data receive
DCE and PCM data output/
TXD_U PIO20
UART data transmit
DCE receive clock/PCM
RTR_U PIO25 receive and transmit clock
input/UART ready-to-receive
DCE transmit clock/PCM frame
CTS_U PIO24 sync clock input/UART clear-
to-send
DCE clear to send/PCM
CTS_HU PIO46 external buffer enable/High-
Speed UART clear-to-send
DCE ready to receive/High-
RTR_HU PIO47
Speed UART ready-to-receive
Default
Signal
PIO36
PIO40
PIO41
PIO38
PIO39
PIO42
PIO22
PIO23
PIO44
PIO45
PIO26
PIO20
PIO25
PIO24
PIO46
PIO47