AS8202B Datasheet, PDF (5/20 Pages) ams AG – TTP-C2NF Communication Controller

AS8202B
Datasheet - Pin Assignments
Table 1. Pin Descriptions
Pin Name
A[11:0]
D[15:0]
CEB
OEB
WEB
READYB
INTB
LED[2:0]
NC
Pin Number
48-42, 39-35
69-62, 58-51
76
77
78
79
28
33-31
1, 27, 40
Dir
Description
TTL Input
Host Interface (CNI) Address Bus²
TTL input/output with tristate Host Interface (CNI) Data Bus, tristate
TTL Input with internal weak
pull-up
Host Interface (CNI) chip enable, active low
Host interface (CNI) output enable, active low
Host interface (CNI) write enable, active low
Host interface (CNI) transfer finish signal, active low, open
TTL output with internal weak ^drain3
pull-up at tristate
Host interface (CNI) time signal (interrupt), active low, open
drain
TTL output with internal weak
pull-down at tristate
Configurable generic output port
Not connected, leave open
1. This pin selects a clock multiplier of 1. This is the only supported operation mode.
2. The device is addressed at 16-bit data word boundaries. If the device is connected to a CPU with a byte-granular address bus, remem-
ber that A[11:0] of the AS8202B device has to be connected to A[12:1] of the CPU (considering a little endian CPU address bus)
3. At de-assertion READYB is driven to the inactive value (high) for a configurable time.
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