參數(shù)資料
型號: TUSB5052B
廠商: Texas Instruments, Inc.
英文描述: USB to 2-Serial + 1-Parallel Controller With Configurable Optional Hub
中文描述: USB轉(zhuǎn)2 -串行接口1 -可配置可選并行控制器集線器
文件頁數(shù): 15/84頁
文件大小: 276K
代理商: TUSB5052B
3–3
Table 3–1. Controller Pin Description (100-pin TQFP) (Continued)
NAME
PIN NO.
I/O
NOTES
3/5V
DESCRIPTION
2-RI
77
I
(2)
UART2: Ring indicator
PD[7:0]
75-2,
70-68,
66
I/O
(5)
Y
1284-port: Data bus
SLIN
65
O
(5)
Y
1284-port: Select input
STB
64
O
(5)
Y
1284-port: Data strobe
AFD
63
O
(5)
Y
1284-port: Auto feed
INIT
61
O
(5)
Y
1284-port: Initialize
ACK
60
I
(5)
Y
1284-port: Acknowledge signal
FALT
59
I
(5)
Y
1284-port: Fault
SLCT
58
I
(5)
Y
1284-port: Select
PER
57
I
(5)
Y
1284-port: Paper end
BUSY
56
I
(5)
Y
1284-port: Busy indication
Master I2C controller: data signal
Master I2C controller: clock signal
SDA
28
I/O
(1)(3)
SCL
27
O
(1)(3)
CLKO
97
O
(1)
Programmable clock output (see GLOBCTL: global control register)
WAKEUP
96
I
(3)
Y
Remote wake-up request bit. When low, wakes up system
X2
99
O
6-MHz crystal output
X1
100
I
6-MHz crystal input or clock input
TRST
51
I
(3)
Test reset input (left open in normal operation)
RSTI
29
I
(3)
Y
Controller master reset signal
RSTO
30
O
(1)
Y
Reset output (see GLOBCTL: global control register)
TEST0
54
I
(3)
Test inputs (left open in normal operation)
TEST1
53
I
(3)
Test inputs (left open in normal operation)
TEST2
52
I
(3)
Test inputs (left open in normal operation)
GND
4 16,
33, 46,
62, 71,
86, 98
GND
Digital ground
VCC
7, 13,
36, 67,
88
PWR
3.3V
VCCs
38, 55,
76
PWR
5V
NOTES:
1. 3-state CMOS output (
±
4 mA drive/sink)
2. Schmidt-trigger input
3. Schmidt-trigger input, with internal 100
μ
A active pullup
4. Unused downstream ports should tie to ground through 15-k
pulldown resisters.
5. IEEE 1284 compliant port
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