
21 IRDA
S1C38000 TECHNICAL MANUAL
EPSON
199
bit 8
Loop Back Mode Status
When this bit reads 1, Loop Back Mode is enabled. When this bit reads 0, Normal Mode
is enabled.
bit 7
IrDA FIR Modulator Select State
When this bit reads 1, the IrDA FIR modulator is connected to the IRTXD output. When
this bit reads 0, the IrDA FIR modulator is disconnected from the IRTXD output.
bit 6
reserved
This bit is reserved and always reads 0.
bit 5
IrDA SIR Modulator Select State
When this bit reads 1, the IrDA SIR modulator is connected to the IRTXD output. When
this bit reads 0, the IrDA SIR modulator is disconnected from the IRTXD output.
bit 4
reserved
This bit is reserved and always reads 0.
bit 3
IrDA FIR Demodulator Select State
When this bit reads 1, the IrDA FIR demodulator is connected to the IRRXD input.
When this bit reads 0, the IrDA FIR demodulator is disconnected from the IRRXD input.
bit 2
reserved
This bit is reserved and always reads 0.
bit 1
IrDA SIR Demodulator Select State
When this bit reads 1, the IrDA SIR demodulator is connected to the IRRXD input.
When this bit reads 0, the IrDA SIR demodulator is disconnected from the IRRXD
input.
bit 0
reserved
This bit is reserved and always reads 0.
bits 15–0
Timer Counter Value Bits [15:0]
When written to, these bits set the initial value of the 16-bit Timer Counter Register.
These bits read back the initial value of the 16-bit Timer Counter Register.
bits 15–12 reserved
These bits are reserved and must be set to 0.
bit 11
Continuous Packet Receive Enable
When this bit is written 1, Continuous Packet Receive is enabled. The 1st Interrupt
request cleared, Rx related flags in Tx/Rx Status Register and the Actual Receive Data
Length Register also cleared. When this bit is written 0, Continuous Packet Receive is
disabled.
IrDA Timer Counter Value Register
IRDA[18h]
Default = 0000 0000h
Read/Write
n/a
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
Timer Counter Value
15
14
13
12
11
10
9876543210
IrDA System Control Register 3
IRDA[1Ch]
Write Only
n/a
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
reserved
Continuous
Packet
Receive
Enable
reserved
IrDA
Interface
Enable
reserved
15
14
13
12
11
10
98
76543210