tmp1941af TOSHIBA Semiconductor CORPORATION, tmp1941af Datasheet - Page 197

• Manufacturer Part Number: tmp1941af
• Description: 32-bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

13. Serial I/O (SIO)
The SIO0 and SIO1 provide Universal Asynchronous Receiver/Transmitter (UART) mode and synchronous I/O
Interface mode. The SIO2 and SIO3 provide only UART mode.
•
•
up mode for multidrop applications in which a master station is connected to several slave stations through a
serial link.
are a clock prescalar, a serial clock generator, a receive buffer, a receive controller, a transimit buffer and a
transmit controller.
below. In the following sections, any references to the SIO0 also apply to the other channels.
Pins Used
I/O Interface Mode
The TMP1941AF serial I/O contains four channels named SIO0, SIO1, SIO3 and SIO4 (there is not SIO2).
In Mode 1 and Mode 2, each character can include a parity bit. In Mode 3, an SIO channel operates in a wake-
Figure 13.2 to Figure 13.5 are block diagrams of each SIO channel. The main components of an SIO channel
Each SIO channel is independently programmable, and functionally equivalent with a few exceptions listed
I/O Interface Mode
UART mode
Mode 0: Transmits/receives a serial clock (SCLK) as well as data streams for a synchronous clock
Mode 1: 7 data bits
Mode 2: 8 data bits
Mode 3: 9 data bits
mode of operation.
TXD0 (P90)
RXD0 (P91)
Available
CTS /SCLK0 (P92)
Table 13.1 Differences Between the SIO Channels
0
SIO0
TMP1941AF-157
TXD1 (P93)
RXD1 (P94)
Available
CTS /SCLK1 (P95)
1
SIO1
TXD3 (P70)
RXD3 (P71)
Not available
SIO3
TMP1941AF
TXD4 (P72)
RXD4 (P73)
Not available
SIO4
2003-03-27