PEB20534H-10 SIEMENS [Siemens Semiconductor Group], PEB20534H-10 Datasheet - Page 44

• Manufacturer Part Number: PEB20534H-10
• Description: DMA Supported Serial Communication Controller with 4 Channels DSCC4
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Semiconductor Group
Table 5
Pin No.
76
87
168
179
78
89
170
181
Symbol
TxCLK0
TxCLK1
TxCLK2
TxCLK3
TxD0
TxD1
TxD2
TxD3
Serial Communication Controller (SCC) Signals (cont’d)
Input (I)
Output (O)
I/O
O,
o/d
Function
Transmit Clock
The function of this pin depends on the
selected clock mode and the value of the
SSEL bit (CCR0 register). If programmed as
an input (bit CCR0.TOE=’0’), this pin supplies
either
– the transmit clock for the channel (clock
– a transmit strobe signal for the channel
If programmed as an output
(bit CCR0.TOE=’1’), this pin supplies the
transmit clock for the channel which is
generated either
– from the baud rate generator (clock mode 2,
– from the DPLL circuit (clock mode 3, 7;
In clock mode 5 an active-low tri-state control
signal marks the programmed transmit time-
slot if bit CCR2.TOE is set.
Transmit Data
Transmit data is shifted out via these pins.
They can be programmed to be either push-
pull or open drain output to support bus
configurations (register CCR1).
44
mode 0, 2, 4, 6; SSEL bit in CCR0 is reset),
or
(clock mode 1).
3, 6, 7; SSEL bit in CCR0 is set), or
SSEL bit in CCR0 is reset).
Pin Descriptions
Data Sheet 09.98
PEB 20534