cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 547

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

Revision 0.8
Electrical Specifications
6.3.12 UART and IR Signaling
The UART support signals detailed in this sub-section use
various types of buffers depending upon chip configuration.
For a detailed explanation of buffer types, see Table 2-4
"Buffer Type Characteristics" on page 28.
Note 1. GPIO configured: AUX_IN and Input Enable = 0; Output Enable and AUX_OUT_1 = 1; Open-drain and
Note 2. GPIO configured: AUX_IN and Input Enable = 0; Output Enable and AUX_OUT_2 = 1; Open-drain and
Note 3. GPIO configured: AUX_IN and Input Enable = 1; Output Enable, AUX_OUT_1, and AUX_OUT_2 = 0.
Signal
UART1_TX (GPIO8)
UART1_IR_TX (GPIO8)
UART1_RX (GPIO9)
UART2_TX (GPIO4)
UART2_RX (GPIO3)
AUX_OUT_2 = 0.
AUX_OUT_1 = 0.
Parameter
Async Output or Level
Async Input
Async Output or Level
Async Input
Async Output or Level
(Continued)
Table 6-20. UART Timing Parameters
Min
NA
NA
NA
NA
NA
547
In this subsection, unless otherwise noted:
• All timing specifications are specified under the oper-
• No clock reference.
ating conditions listed in Table 6-3 on page 526 (i.e.,
V
T
Max
CORE
CASE
NA
NA
NA
NA
NA
= All).
and V
Units
ns
ns
ns
ns
ns
CORE_VSB
Comment/Condition
Note 1.
Note 2.
Note 3.
Note 1.
Note 3
= All; V
IO
and V
IO_VSB
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= All;